JP3882045B2 - Detection paper and absorption can - Google Patents
Detection paper and absorption can Download PDFInfo
- Publication number
- JP3882045B2 JP3882045B2 JP2003324724A JP2003324724A JP3882045B2 JP 3882045 B2 JP3882045 B2 JP 3882045B2 JP 2003324724 A JP2003324724 A JP 2003324724A JP 2003324724 A JP2003324724 A JP 2003324724A JP 3882045 B2 JP3882045 B2 JP 3882045B2
- Authority
- JP
- Japan
- Prior art keywords
- detection paper
- absorption
- nitrobenzyl
- pyridine
- attached
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000001514 detection method Methods 0.000 title claims description 78
- 238000010521 absorption reaction Methods 0.000 title claims description 35
- 239000007789 gas Substances 0.000 claims description 49
- 150000001875 compounds Chemical class 0.000 claims description 24
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 20
- MNHKUCBXXMFQDM-UHFFFAOYSA-N 4-[(4-nitrophenyl)methyl]pyridine Chemical compound C1=CC([N+](=O)[O-])=CC=C1CC1=CC=NC=C1 MNHKUCBXXMFQDM-UHFFFAOYSA-N 0.000 claims description 13
- 239000003153 chemical reaction reagent Substances 0.000 claims description 13
- OEBRKCOSUFCWJD-UHFFFAOYSA-N dichlorvos Chemical compound COP(=O)(OC)OC=C(Cl)Cl OEBRKCOSUFCWJD-UHFFFAOYSA-N 0.000 claims description 13
- 239000002250 absorbent Substances 0.000 claims description 12
- 230000002745 absorbent Effects 0.000 claims description 12
- VONWDASPFIQPDY-UHFFFAOYSA-N dimethyl methylphosphonate Chemical compound COP(C)(=O)OC VONWDASPFIQPDY-UHFFFAOYSA-N 0.000 claims description 12
- 239000006096 absorbing agent Substances 0.000 claims description 7
- 239000002341 toxic gas Substances 0.000 claims description 4
- GBNVXYXIRHSYEG-UHFFFAOYSA-N 1-chloro-2-ethylsulfanylethane Chemical compound CCSCCCl GBNVXYXIRHSYEG-UHFFFAOYSA-N 0.000 claims description 3
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 239000003086 colorant Substances 0.000 claims 1
- 238000000034 method Methods 0.000 description 18
- 239000003463 adsorbent Substances 0.000 description 9
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 8
- 238000004040 coloring Methods 0.000 description 7
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 6
- 239000007864 aqueous solution Substances 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 5
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 230000035945 sensitivity Effects 0.000 description 4
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 4
- 235000017557 sodium bicarbonate Nutrition 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 238000012790 confirmation Methods 0.000 description 3
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 3
- 229910052753 mercury Inorganic materials 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000013022 venting Methods 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- FFBHFFJDDLITSX-UHFFFAOYSA-N benzyl N-[2-hydroxy-4-(3-oxomorpholin-4-yl)phenyl]carbamate Chemical compound OC1=C(NC(=O)OCC2=CC=CC=C2)C=CC(=C1)N1CCOCC1=O FFBHFFJDDLITSX-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- OSWPMRLSEDHDFF-UHFFFAOYSA-N methyl salicylate Chemical compound COC(=O)C1=CC=CC=C1O OSWPMRLSEDHDFF-UHFFFAOYSA-N 0.000 description 2
- 150000004045 organic chlorine compounds Chemical class 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- 239000001488 sodium phosphate Substances 0.000 description 2
- 229910000162 sodium phosphate Inorganic materials 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 231100000167 toxic agent Toxicity 0.000 description 2
- 239000003440 toxic substance Substances 0.000 description 2
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 2
- YBRDBYGCEIDLBX-UHFFFAOYSA-N 2-[(4-nitrophenyl)methyl]pyridine Chemical compound C1=CC([N+](=O)[O-])=CC=C1CC1=CC=CC=N1 YBRDBYGCEIDLBX-UHFFFAOYSA-N 0.000 description 1
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- YGYAWVDWMABLBF-UHFFFAOYSA-N Phosgene Chemical compound ClC(Cl)=O YGYAWVDWMABLBF-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 1
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229960001047 methyl salicylate Drugs 0.000 description 1
- 238000010137 moulding (plastic) Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 150000002903 organophosphorus compounds Chemical class 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Landscapes
- Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Description
本発明は、有害ガス用吸収缶の交換時期を着用者に知らせるための検知紙を取り付けた防毒マスクに関するものである。 The present invention relates to a gas mask fitted with a detection paper to inform the user Wear replacement timing of harmful gas canister.
ジメチル−２，２−ジクロロビニルホスフェイト（以下「ＤＤＶＰ」と記す）、メチルホスホン酸ジメチル（以下「ＤＭＭＰ」と記す）、及び２−クロロエチルエチルスルフィド（以下「ＣＥＥＳ」と記す）のいずれか１成分を主成分とするガスは有害なものとされている。また、これらの有害ガスとの接触を防止するために防毒マスクが各国で使用されている。 Any one of dimethyl-2,2-dichlorovinyl phosphate (hereinafter referred to as “DDVP”), dimethyl methylphosphonate (hereinafter referred to as “DMMP”), and 2-chloroethyl ethyl sulfide (hereinafter referred to as “CEES”) Gases whose components are the main components are considered harmful . Also, a gas mask to prevent contact with these harmful gases is used in each country.
防毒マスクには、汚染空気中の有害ガス除去用の吸着剤を収納した吸収缶が設けられている。吸収缶内の吸着剤の残存能力を把握し、吸収缶の最適な交換時期を知ることは、有害ガス吸入防止及び吸収缶の節約上きわめて重要である。したがって、吸収缶の交換時期を知るために種々の提案がなされている。 The gas mask is provided with an absorption can that contains an adsorbent for removing harmful gas in the contaminated air. Knowing the remaining capacity of the adsorbent in the can and knowing the optimum replacement time of the can is extremely important for preventing harmful gas inhalation and saving the can. Therefore, various proposals have been made in order to know the replacement time of the canister.
特許文献１には、防毒マスクの吸収缶とは別にブロワーを備えたモニター用吸収缶を使用する方法が、特許文献２乃至４には防毒マスクに電子回路を利用したセンサーを組み込む方法が、特許文献５には試験ガスを吸収缶に通気させる方法が、特許文献６にはガスを吸着すると膨張する活性炭を含んだ吸収缶を使用する方法が、特許文献７には吸収缶２に検知管を組み込む方法が、特許文献８には吸収缶に検知紙を組み込み同紙とガスとの反応による呈色から吸収缶の交換時期を知る方法等が提案されている。 Patent Document 1 discloses a method of using a monitor absorption can equipped with a blower separately from the gas mask absorption can, and Patent Documents 2 to 4 disclose a method of incorporating a sensor using an electronic circuit in the gas mask. In Patent Document 5, the method of venting the test gas through the absorption canister, in Patent Document 6, the method of using an absorption canister containing activated carbon that expands when the gas is adsorbed, and in Patent Document 7, the detector tube is installed in the absorber 2. Patent Document 8 proposes a method of incorporating detection paper into an absorption can and knowing the replacement time of the absorption can from the coloration caused by the reaction between the paper and gas.
また、吸収缶の交換時期把握用に限定したものではないが、大気中の有害ガス検知用としてはさまざまな検知紙が提案されている。有機塩素化合物に関するものとしては、例えば特許文献９に記載されているような検知紙が提案されている。
しかしながら、上述した方法のうち、特許文献１に記載されたブロワーを吸収缶とは別途装着させる方法については、ブロワ−が吸収缶に比べて高価であるため経済的でなく実用化されていない。 However, among the methods described above, the method of mounting the blower described in Patent Document 1 separately from the absorption can is not economical and practical because the blower is more expensive than the absorption can.
特許文献２乃至４に記載されているセンサーを組み込む方法については、既に一部のガスに対するものが実用化されているが、吸収缶に比べてセンサーが高価であり、センサーを組み込むより、吸収缶を早めに交換する方が経費が削減できるため、広くは普及していない。 As for the method of incorporating the sensors described in Patent Documents 2 to 4, those for some gases have already been put to practical use. However, the sensor is more expensive than the absorber, and the absorber can be used rather than incorporating the sensor. Since it is possible to reduce costs by exchanging them earlier, it is not widely used.
特許文献５に記載されている試験ガスを吸収缶に通気させる方法については、試験ガスを通気させ、吸収缶から漏れてくる同ガス濃度を測定するという方法であるが、この方法では実際に使用している環境下において上記方法を行なうのは困難であり、又手間と費用がかかるため実用化していない。 The method of venting the test gas described in Patent Document 5 through the absorption can is a method of venting the test gas and measuring the concentration of the gas leaking from the absorption can, but this method is actually used. It is difficult to carry out the above method in a working environment, and it has not been put into practical use because it takes time and money.
特許文献６に記載されているガスを吸着すると膨張する活性炭を含んだ吸収缶を使用する方法については、活性炭の膨張をセンサーで検知する場合は経済的ではなく、また、肉眼で観察するには吸収缶を外して確認する必要があり汚染空気下では危険であるため実用化されていない。 About the method of using the absorption can containing activated carbon which expands when the gas described in Patent Document 6 is adsorbed, it is not economical to detect the expansion of activated carbon with a sensor, and to observe with the naked eye It is necessary to remove the canister for confirmation, and it is dangerous to use under contaminated air.
特許文献７又は８に記載されている検知紙及び検知管を組み込む方法については、他の方法に比べて安価ではあるが、適切な感度の検知紙及び検知管がなく、着用中にこれらの呈色を簡単には見られないためほとんど実用化されていない。また、特許文献８には、検知紙を使用することは記載されているが、検知紙の成分・性能等に関する記載はない。 The method of incorporating the detection paper and the detection tube described in Patent Document 7 or 8 is less expensive than other methods, but there is no detection paper and detection tube with appropriate sensitivity, and these are not displayed during wearing. Since it is not easy to see the color, it has hardly been put to practical use. Patent Document 8 describes the use of detection paper, but does not describe the components, performance, etc. of the detection paper.
特許文献９に記載されている有害ガス検知紙は、有機塩素化合物のうち、ホスゲンのみを検知の対象する検知紙であるので、本発明者の対象とする例えばＣＥＥＳを主成分とする有害ガスのための検知紙ではない。 Since the harmful gas detection paper described in Patent Document 9 is a detection paper for which only phosgene is to be detected among organic chlorine compounds, for example , a harmful gas mainly composed of CEES, which is the subject of the present inventor. It is not for detection paper.
市販の水銀用吸収缶の破過目安テープは、吸収缶の側面に水銀用検知紙をテープ状にして貼り付けたものであり、吸収缶交換時期把握用検知紙の実用例である。
しかし、このテープは水銀のみに有効であり、本発明の対象であるＤＤＶＰ、ＤＭＭＰ、及びＣＥＥＳのいずれか１成分を主成分とする有害ガスには無効である。また、この破過目安テープは吸収缶からの自由な着脱ができないため着用者が容易に確認することができなかった。
The commercially available breakthrough guide tape for mercury absorption cans is a practical example of detection paper for grasping the replacement time of absorption cans, in which mercury detection paper is taped on the side of the absorption can.
However, this tape is effective only for mercury, and is not effective for harmful gases mainly composed of any one component of DDVP, DMMP, and CEES, which are the objects of the present invention. In addition, since the breakthrough guide tape cannot be freely attached to and detached from the absorbent can, the wearer could not easily check.
また、ＤＤＶＰ、ＤＭＭＰ、及びＣＥＥＳのいずれか１成分を主成分とする有害ガスを検知する場合、例えば検知紙などの検知対象物を高温で数分間程度加熱した後でないと有害ガスの有無が検知できず、検知するまでに手間がかかり着用時に加熱による事故が偶発する恐れがあった。 In addition, when detecting harmful gases mainly composed of any one component of DDVP, DMMP, and CEES, the presence or absence of harmful gases is detected only after the detection object such as detection paper is heated at high temperature for about several minutes. It could not be done, and it took time to detect it, and there was a risk of accidents due to heating during wearing.
そこで、本発明は上述した問題点に鑑みなされたものであり、防毒マスクに使用する吸収缶の交換時期を着用者が容易に認識することができる検知紙及び吸収缶を提供することを目的とする。 Then, this invention is made | formed in view of the problem mentioned above, It aims at providing the detection paper and absorption can which a wearer can recognize easily the replacement time of the absorption can used for a gas mask. To do.
請求項１記載の検知紙は、ジメチル−２，２−ジクロロビニルホスフェイト、メチルホスホン酸ジメチル、及び２−クロロエチルエチルスルフィドのいずれか１成分を主成分とする有害ガスの呈色試薬として４−（４−ニトロベンジル）ピリジン及びアルカリ性化合物を用いた検知紙であって、前記４−（４−ニトロベンジル）ピリジンの付着範囲が前記アルカリ性化合物の付着範囲よりも広くなるように同心円状に付着させたことを特徴とする。 The detection paper according to claim 1 is a 4-color gas as a harmful gas coloring reagent mainly composed of any one of dimethyl-2,2-dichlorovinyl phosphate , dimethyl methylphosphonate, and 2-chloroethyl ethyl sulfide. It is a detection paper using (4-nitrobenzyl) pyridine and an alkaline compound, and is attached concentrically so that the adhesion range of the 4- (4-nitrobenzyl) pyridine is wider than the adhesion range of the alkaline compound. It is characterized by that.
この請求項１記載の発明によれば、４ー（４−ニトロベンジル）ピリジンが４ー（４−ニトロベンジル）ピリジン／アルカリ性化合物の混在部分の付着範囲よりも広くなるよう同心円状に付着させることにより、ＤＤＶＰを主成分とする有害ガスに対して同心円の外側部分が内側部分よりも感度良く呈色する。 According to the first aspect of the present invention, the 4- (4-nitrobenzyl) pyridine is concentrically attached so as to be wider than the adhesion range of the mixed portion of 4- (4-nitrobenzyl) pyridine / alkaline compound. Thus, the outer part of the concentric circle is colored with higher sensitivity than the inner part with respect to the harmful gas mainly composed of DDVP .
請求項２記載の検知紙は、請求項１記載の検知紙において、前記有害ガスの濃度及び接触時間にほぼ比例して呈色し、吸収缶を交換すべき時期に呈色が完了するような濃度で前記４−（４−ニトロベンジル）ピリジン及び前記アルカリ性化合物を付着させることを特徴とする。 The detection paper according to claim 2 is colored in proportion to the concentration of the harmful gas and the contact time in the detection paper according to claim 1, and the coloration is completed when the absorption can should be replaced. The 4- (4-nitrobenzyl) pyridine and the alkaline compound are attached at a concentration.
この請求項２記載の発明によれば、吸収缶のガス吸着能力喪失時期に呈色が完了するような濃度で呈色試薬を付着させるので、吸収缶の無駄遣いを防ぐことができ経済的である。 According to the second aspect of the present invention, since the coloring reagent is attached at such a concentration that coloration is completed when the gas adsorption capacity of the absorption can is lost, it is economical that waste of the absorption can can be prevented. .
請求項３記載の検知紙は、請求項１又は２記載の検知紙において、前記検知紙に付着させる前記呈色試薬において、前記４ー（４−ニトロベンジル）ピリジンの付着濃度が0 ．３ｇ／ｍ2 〜２．５ｇ／ｍ2 、前記アルカリ性化合物の付着濃度が0 ．２ｇ／ｍ2 〜１．７ｇ／ｍ2 で付着されていることを特徴とする。 The detection paper according to claim 3 is the detection paper according to claim 1 or 2, wherein the 4- (4-nitrobenzyl) pyridine adhesion concentration in the color reagent to be attached to the detection paper is 0. 3g / m 2 ~2.5g / m 2 , adhesion concentration of the alkaline compound is 0. Characterized in that it is deposited at 2g / m 2 ~1.7g / m 2 .
この請求項３記載の発明によれば、濾紙への４ー（４−ニトロベンジル）ピリジン及びアルカリ性化合物付着量はそれぞれ、0 ．３ｇ／ｍ2 〜２．５ｇ／ｍ2 及び0 ．２ｇ／ｍ2 〜１．７ｇ／ｍ2 とすることにより、各有害ガスに対する呈色が明瞭となり、また、経済的である。 According to the third aspect of the present invention, the adhesion amounts of 4- (4-nitrobenzyl) pyridine and alkaline compound to the filter paper are 0. 3g / m 2 ~2.5g / m 2 and 0. By setting it to 2 g / m < 2 > -1.7 g / m < 2 >, the coloring with respect to each noxious gas becomes clear, and it is economical.
請求項４記載の検知紙は、請求項１乃至３記載の検知紙において、前記呈色試薬が滴下されている表面の一部にフイルムを貼り付けたことを特徴とする。 According to a fourth aspect of the present invention, there is provided the detection paper according to any one of the first to third aspects, wherein a film is attached to a part of a surface on which the color reagent is dropped.
請求項４記載の発明によれば、呈色試薬が滴下されている表面の一部にフイルムを貼り付けることにより、呈色時間の調整をすることができる。 According to the invention described in claim 4, the coloration time can be adjusted by sticking the film to a part of the surface on which the color reagent is dropped.
請求項５記載の検知紙は、請求項１乃至４記載の検知紙において、前記有害ガスごとの呈色時と同色、且つ、同濃度であるインクで特有の記号を記入してあることを特徴とする。 The detection paper according to claim 5 is characterized in that in the detection paper according to claims 1 to 4, a unique symbol is filled in with ink having the same color and the same concentration as the color of each harmful gas. And
この請求項５記載の発明によれば、各有害ガスごとに特有の記号を記入してあるので防毒マスク着用者が交換時期を示す色を記憶していなくとも、吸収缶交換時期を適切に判断することができる。 According to the fifth aspect of the present invention, since a unique symbol is entered for each harmful gas, even if the gas mask wearer does not memorize the color indicating the replacement time, the replacement time for the absorber can be determined appropriately. can do.
請求項６記載の吸収缶は、請求項１乃至５記載の検知紙が吸収缶の活性炭層よりも上流且つ指の届く位置に取付けられているとともに、前記検知紙が引き剥がしてもフィルター層や活性炭層に孔があかない位置に取付けられていることを特徴とする。 The absorbent can according to claim 6 is provided with the detection paper according to claim 1 to 5 upstream of the activated carbon layer of the absorbent can and at a position where the finger can reach, and even if the detection paper is peeled off, the filter layer or The activated carbon layer is attached at a position where there is no hole.
この請求項６記載の発明によれば、吸収缶の活性炭層よりも上流且つ指の届く位置に取付けられているとともに、検知紙が引き剥がしてもフィルター層や活性炭層に孔があかない位置に取付けられていることにより、防毒マスク着用者は作業中でも容易に吸収缶交換時期を判断することができる。 According to the sixth aspect of the present invention, the filter is installed at a position upstream of the activated carbon layer of the absorption canister and reachable by the finger and at a position where the filter layer and the activated carbon layer have no holes even if the detection paper is peeled off. By being attached, the gas mask wearer can easily determine when to replace the absorbent can even during work.
本発明によれば、呈色する検知紙の呈色試薬をできる限り少ない成分で４ー（４−ニトロベンジル）ピリジンの付着範囲がアルカリ性化合物の付着範囲よりも広くなるように同心円状に付着させることにより、ＤＤＶＰ、ＤＭＭＰ、及びＣＥＥＳのいずれか１成分を主成分とする有害ガスを高感度に検知することができる。さらに、検知紙自体に加熱等の検知確認用の作業を必要とせず常温で呈色するので、着用者は交換時期の確認を簡素化することができる。 According to the present invention, the coloring reagent of the detection paper to be colored is attached concentrically so that the adhesion range of 4- (4-nitrobenzyl) pyridine is wider than the adhesion range of the alkaline compound with as few components as possible. By this , the harmful gas which has any one component of DDVP, DMMP, and CEES as a main component can be detected with high sensitivity. Furthermore, since the detection paper itself is colored at room temperature without requiring a detection confirmation operation such as heating, the wearer can simplify the confirmation of the replacement time.
検知紙が有害ガスの濃度と接触時間に比例して呈色し、吸収缶がガス吸着能力を失う前に検知紙に呈色させることができるので、ＤＤＶＰ、ＤＭＭＰ、及びＣＥＥＳのいずれか１成分を主成分とする有害ガスの吸入を防ぐことができる。
また、検知紙の表面にフィルムを貼り付けることにより、呈色時期を吸収缶のガス吸着能力喪失時期よりも早すぎないようにすることができ、その結果、吸収缶の早すぎる交換を防止して、その無駄遣いを防ぐことができる。
Since the detection paper is colored in proportion to the concentration and contact time of the harmful gas, and the absorption can loses its gas adsorption capacity, the detection paper can be colored, so any one component of DDVP, DMMP, and CEES Inhalation of harmful gases containing as a main component can be prevented.
In addition, by attaching a film to the surface of the detection paper, the coloration time can be prevented from being earlier than the time when the gas absorption capacity of the absorber can be lost, thereby preventing the absorber from being replaced too early. This can prevent wasteful use.
各有害物質ごとに検知紙の呈色の色調及び濃度が異なるので、防毒ガス着用者がそれらを記憶していなくとも、吸収缶交換時期を適切に判定することができる。また、直結型防毒マスクの場合、同マスクの吸収缶は着用者から見えない位置にあり、したがって、そのままでは吸収缶内の検知紙の呈色も観察できない。呈色した検知紙を目の前に引き剥がして呈色の確認ができるので、着用者は空気汚染地帯での作業中でも容易に吸収缶の交換時期が確認できる。 Since the color tone and density of the color of the detection paper are different for each toxic substance, it is possible to appropriately determine the absorption can replacement time even if the gas-proof gas wearer does not store them. Further, in the case of a direct-coupled gas mask, the absorbent can of the mask is in a position that cannot be seen by the wearer, and therefore, the color of the detection paper in the absorbent can not be observed as it is. Since the colored detection paper can be peeled off in front of the eyes to check the coloration, the wearer can easily check the replacement time of the absorbent can even during work in an air-contaminated zone.
まず、本発明の検知紙１について実施例１をもって詳細に説明する。なお、本発明の検知紙１の基となる紙は、呈色観察の妨害になるような濃い色が付いていない清浄な紙であれば良く、白色の濾紙が好適である。 First, the detection paper 1 of the present invention will be described in detail with reference to Example 1. The paper that is the basis of the detection paper 1 of the present invention may be a clean paper that does not have a dark color that interferes with color observation, and is preferably white filter paper.
（工程１）
アドバンテック（株）製Ｎｏ．１０１濾紙を１２ｍｍ角に切り、その中心部に４ー（４−ニトロベンジル）ピリジン（以下「ＮＢＰ」という。）の６ｗ／ｖ％アセトン溶液６μＬを滴下し、１分間常温で風乾した。滴下部の中心に炭酸水素ナトリウムの飽和水溶液３μＬを滴下し常温で１０分間風乾し、試製検知紙１を得た。
(Process 1)
No. manufactured by Advantech Co., Ltd. 101 filter paper was cut into a 12 mm square, and 6 μL of a 6 w / v acetone solution of 4- (4-nitrobenzyl) pyridine (hereinafter referred to as “NBP”) was dropped into the center of the filter paper, and air-dried at room temperature for 1 minute. 3 μL of a saturated aqueous solution of sodium hydrogen carbonate was dropped at the center of the dropping part and air-dried at room temperature for 10 minutes to obtain a trial detection paper 1.
（工程２）
容量０．５Ｌの共栓付三角フラスコにＣＥＥＳとテフロン（登録商標）製回転子を入れ、栓をして１０分間振り混ぜ、ＣＥＥＳを可能な限り気化させた。そのフラスコに工程１で得た試製検知紙を入れ、常温で放置した。試製検知紙１は、以下の表１の第１〜第３欄に示すように呈色し、ＣＥＥＳ濃度と呈色完了までの時間の積が、ＣＥＥＳ濃度にかかわらずほぼ一定であることがわかった。
(Process 2)
CEES and a Teflon (registered trademark) rotor were placed in a conical stoppered flask with a volume of 0.5 L, capped and shaken for 10 minutes to vaporize CEES as much as possible. The trial detection paper obtained in Step 1 was placed in the flask and left at room temperature. The trial detection paper 1 is colored as shown in the first to third columns of Table 1 below, and it is found that the product of the CEES concentration and the time until the completion of coloring is almost constant regardless of the CEES concentration. It was.
上述した検知紙１の工程内で用いられる呈色試薬はＮＢＰであり、これは工程１のようにアセトン等の有機溶媒に溶解した状態で濾紙に滴下した後、溶媒を蒸発させることで濾紙に付着させることができる。
もう一方の呈色試薬は、水酸化ナトリウム、炭酸ナトリウム、炭酸水素ナトリウム、リン酸ナトリウム等のアルカリ性化合物である。これらは、水溶液としてＮＢＰ付きの濾紙に滴下した後、水を蒸発させることで付着させることができる。ただし、アルカリ性化合物の水溶液の滴下量はＮＢＰの溶液の滴下量より少なくし、図１に示すようにＮＢＰのみ付着する部分とＮＢＰ／アルカリ性化合物の混在部分が同心円となるようにすることが望ましい。これは、ＤＤＶＰ等の有機リン化合物に対して、同心円の外側部分が内側部分よりも感度良く呈色するからである。
The color reagent used in the process of the detection paper 1 described above is NBP, which is dropped in the filter paper in a state dissolved in an organic solvent such as acetone as in the process 1 and then evaporated on the filter paper by evaporating the solvent. Can be attached.
The other color reagent is an alkaline compound such as sodium hydroxide, sodium carbonate, sodium hydrogen carbonate, sodium phosphate. These can be made to adhere by evaporating water, after dripping on the filter paper with NBP as aqueous solution. However, it is desirable that the dropping amount of the aqueous solution of the alkaline compound is smaller than the dropping amount of the NBP solution so that the portion where only NBP adheres and the mixed portion of NBP / alkaline compound are concentric as shown in FIG. This is because the outer portion of the concentric circle is colored with higher sensitivity than the inner portion with respect to an organic phosphorus compound such as DDVP.
以下に、各工程における比較例を具体的に説明する。 Below, the comparative example in each process is demonstrated concretely.
（比較例１）
工程２と同じ操作をＣＥＥＳ以外の物質に対して行ない、表１第４欄以下の記載のとおりとなった。エタノール、アセトン、サリチル酸メチル等のリンも塩素も含まない化合物の場合は呈色しないこと、ＤＤＶＰでは橙色に呈色すること及びメチルホスホン酸ジメチル（以下「ＤＭＭＰ」という。）では呈色が淡いことがわかった。
(Comparative Example 1)
The same operation as in step 2 was performed on substances other than CEES, and the results were as described in the fourth column of Table 1 below. In the case of compounds containing neither phosphorus nor chlorine, such as ethanol, acetone, methyl salicylate, etc., there is no coloration. In DDVP, the color is orange, and in dimethyl methylphosphonate (hereinafter referred to as “DMMP”), the coloration is light. all right.
表１に示すように、濾紙へのＮＢＰ及びアルカリ性化合物付着量はそれぞれ、0 ．３ｇ／ｍ2 〜２．５ｇ／ｍ2 及び0 ．２ｇ／ｍ2 〜１．７ｇ／ｍ2 とするのが望ましい。これ以下の付着量では呈色が不明瞭となり、また、これ以上は付着量に呈色濃度が伴わず不経済となるからである。 As shown in Table 1, the amount of NBP and alkaline compound attached to the filter paper was 0. 3g / m 2 ~2.5g / m 2 and 0. It is desirable to 2g / m 2 ~1.7g / m 2 . This is because if the amount of adhesion is less than this, the coloration becomes unclear, and if it is more than this, the color density does not accompany the amount of adhesion and it becomes uneconomical.
（比較例２）
次に、工程２と同じ操作をＣＥＥＳに対して行った。ただし、試製検知紙には、表２記載のとおりメンディングテープをフィルムとして両面に貼り付け側面部は解放した。その結果、フィルムにより呈色までの時間を長くできることがわかった。
なお、このフィルムについては、例えば透明性のフィルム等の少なくとも検知紙に付着させた呈色試薬の面に貼り付けることができるもので、且つ、呈色の程度が確認できるものであれば良い。
(Comparative Example 2)
Next, the same operation as step 2 was performed on CEES. However, as shown in Table 2, the trial detection paper was affixed on both sides with a mending tape as a film, and the side portions were released. As a result, it was found that the time until coloration can be lengthened by the film.
In addition, about this film, what can be affixed on the surface of the coloring reagent adhering to at least detection paper, such as a transparent film, for example, and what can confirm the degree of coloring is sufficient.
表２に示すように、濾紙に呈色試薬を付着させてできた検知紙１はそのまま使用することもできるが、呈色時期を遅らせる必要がある場合、フィルムで表面を覆った状態で使用することもできる。 As shown in Table 2, the detection paper 1 made by adhering the color reagent to the filter paper can be used as it is, but when it is necessary to delay the coloration time, it is used with the surface covered with a film. You can also
（比較例３）
工程１と同じ操作を、炭酸水素ナトリウム以外のアルカリ性化合物を用いて行い試製検知紙１を得た。ただし、水溶液中のアルカリ性化合物濃度は８ｗ／ｖ％とした。この試製検知紙１に対して工程２と同じ操作を行い、表３のとおり、各アルカリ性化合物によっても呈色することを見いだした。
(Comparative Example 3)
The same operation as in Step 1 was performed using an alkaline compound other than sodium hydrogen carbonate to obtain a trial detection paper 1. However, the alkaline compound concentration in the aqueous solution was 8 w / v%. This trial detection paper 1 was subjected to the same operation as in step 2, and as shown in Table 3, it was found that the color was also generated by each alkaline compound.
表３に示すように、炭酸水素ナトリウム以外の各アルカリ性化合物においても呈色することを見いだしたが、好ましくは炭酸ナトリウム又はリン酸ナトリウム等の強アルカリ性化合物と中性化合物との中間程度のアルカリ性を示すアルカリ化合物が良い。 As shown in Table 3, it has been found that each alkaline compound other than sodium hydrogen carbonate is colored, but preferably has an intermediate degree of alkalinity between a strong alkaline compound such as sodium carbonate or sodium phosphate and a neutral compound. The alkaline compound shown is good.
（比較例４）
工程１と同じ操作を行い試製検知紙を得た。ただし、ＮＢＰ溶液及びアルカリ性水溶液の濃度は表４のとおりとした。この試製検知紙に対して工程２と同じ操作を行い、表４のとおり、ＮＢＰ及びアルカリ性化合物の検知紙１への付着量限度に関する知見を得た。
(Comparative Example 4)
The same operation as in Step 1 was performed to obtain a trial detection paper. However, the concentrations of the NBP solution and the alkaline aqueous solution were as shown in Table 4. The same operation as in step 2 was performed on the trial detection paper, and as shown in Table 4, knowledge about the amount of NBP and an alkaline compound adhering to the detection paper 1 was obtained.
検知紙１の呈色の色調及び濃淡は有害物質の種類によりさまざまである。例えば、ＤＤＶＰは橙色に呈色し、ＣＥＥＳは紫色に呈色する。また、ＤＭＭＰによる呈色は淡く、ＣＥＥＳによる呈色は濃い。 The color tone and shade of the detection paper 1 vary depending on the type of harmful substance. For example, DDVP is colored orange and CEES is colored purple. Moreover, the coloration by DMMP is light and the coloration by CEES is dark.
図２に示すように、使用前の検知紙１に、各有害ガスごとの呈色時と同色・ 同濃度のインクで記号を記入しておく。そして、検知紙１に記入された記号の色が判別できない程度まで呈色された場合に吸収缶が使用不可能と判断される。
これにより、各有害物質ごとに異なる呈色の色調及び濃度を記憶していなくとも吸収缶２の交換時期を適切に判別することができる。
As shown in FIG. 2, a symbol is written on the detection paper 1 before use with ink of the same color and the same concentration as that for each toxic gas. Then, when the color of the symbol entered on the detection paper 1 is colored to such an extent that it cannot be determined, it is determined that the absorbent can not be used.
Thereby, even if it does not memorize | store the color tone and density | concentration which differ for every hazardous | toxic substance, the replacement | exchange time of the absorption can 2 can be discriminate | determined appropriately.
次に、図３を用いて吸収缶２の概略説明と検知紙１の取付位置について説明する。 Next, an outline description of the absorbent can 2 and an attachment position of the detection paper 1 will be described with reference to FIG.
図３に示すように吸収缶２は、従来公知の吸収缶２と同様に、内部に有害ガスの吸着剤３を収容し且つ防毒マスクの面体（図示せず）に連結される接続部４と、接続部４の対称面側に設けられ着用者が呼吸する際に外気を取り入れるための開口部５と、吸着剤２の開口部５側に設けられるパーティクルフィルター６と、吸着剤３の接続部４側とパーティクルフィルター６の開口部５側にそれぞれ設けられている多孔板７ａ，７ｂとで構成されている。 As shown in FIG. 3, the absorption can 2 is similar to the conventionally known absorption can 2, and includes a connection portion 4 that contains an adsorbent 3 for harmful gas and is connected to a face mask (not shown) of a gas mask. An opening 5 provided on the symmetrical surface side of the connecting portion 4 for taking in outside air when the wearer breathes, a particle filter 6 provided on the opening 5 side of the adsorbent 2, and a connecting portion of the adsorbent 3. 4 and the perforated plates 7a and 7b provided on the opening 5 side of the particle filter 6, respectively.
吸収缶２の本体は、メッキ鉄板、アルミ、アルミ合金で製作される他、プラスチックの成形で製作される。そして、プラスチックの材質としては、各種合成樹脂、例えば、ポリエチレン、ポリプロピレン、ＡＢＳ、ポリカーボネート、ＰＶＣ等が使用できる。
吸着剤３としては、活性炭が主に使用されるが、対象ガスに合わせて適宜シリカゲルやその他の市販の吸着剤を使用することが出来る。
接続部４は、通常、一方の面の略中央部に設けられ、防毒マスクの面側に設けられている接続口と接続される。
開口部５は防毒マスク着用者が呼吸する際の外気の取り入れ口として機能する。
パーティクルフィルター６や多孔板７ａ，７ｂは、吸着剤３と同様に外部から取り込まれる空気を濾過する。これらは、無機または有機繊維の不織布，多孔質膜等で構成することができる。
The main body of the absorbent can 2 is made of plated iron plate, aluminum, aluminum alloy, or plastic molding. As the plastic material, various synthetic resins such as polyethylene, polypropylene, ABS, polycarbonate, PVC and the like can be used.
As the adsorbent 3, activated carbon is mainly used, but silica gel and other commercially available adsorbents can be appropriately used according to the target gas.
The connection part 4 is normally provided in the substantially center part of one surface, and is connected with the connection port provided in the surface side of the gas mask.
The opening 5 functions as an intake of outside air when the gas mask wearer breathes.
Similar to the adsorbent 3, the particle filter 6 and the porous plates 7a and 7b filter the air taken from the outside. These can be composed of a nonwoven fabric of inorganic or organic fibers, a porous membrane or the like.
また、図３に示したように検知紙１の取付位置は、防毒マスクに吸入される空気と実質的に同程度汚染されている空気にさらされる場所ならばどこでも良いが、吸収缶２の開口部付近が好適である。また、雨、液状有害物質等による汚染を避けるためには、例えば検知紙貼付位置Ａに示すように吸収缶２の開口部内あるいは検知紙貼付位置Ｂに示すように吸収缶２外壁の下部が良い。
肉眼での観察のたびに、この検知紙１を取り出して目の前に持っていき、また、元に戻すためには、検知紙１の裏面に着脱可能な接着剤を付着させておくのが良い。また、取付位置として、指が届かないほど吸収缶２の奥深い場所や着脱が容易でない場所であってはならない。
Moreover, as shown in FIG. 3, the attachment position of the detection paper 1 may be anywhere where it is exposed to air that is substantially contaminated to the same degree as the air sucked into the gas mask. The vicinity of the part is preferable. Further, in order to avoid contamination due to rain, liquid harmful substances, etc., the lower part of the outer wall of the absorption can 2 is good, for example, in the opening of the absorption can 2 as shown in the detection paper application position A or in the detection paper application position B. .
For each observation with the naked eye, the detection paper 1 is taken out and taken in front of the eyes, and in order to return it to the original, a removable adhesive is attached to the back surface of the detection paper 1. good. Moreover, as an attachment position, it must not be a place where the absorption can 2 is so deep that the finger cannot reach, or a place where attachment / detachment is not easy.
このように、上述した検知紙は、ＤＤＶＰ、ＤＭＭＰ、及びＣＥＥＳのいずれか１成分を主成分とする有害ガス用吸収缶の交換時期を着用者が容易に確認することができる。これにより、着用者は、吸収缶が使用不可能になる前に交換することができるので、着用者の安全が確保される。 As described above, the above-described detection paper allows the wearer to easily confirm the replacement time of the harmful gas absorbent cans whose main component is any one of DDVP, DMMP, and CEES . Thereby, since a wearer can replace | exchange before an absorption can becomes unusable, a wearer's safety is ensured.
１ 検知紙
２ 吸収缶
３ 吸着剤
４ 接続部
５ 開口部
６ パーティクルフィルター
７ａ，７ｂ 多孔板
DESCRIPTION OF SYMBOLS 1 Detection paper 2 Absorbing can 3 Adsorbent 4 Connection part 5 Opening part 6 Particle filter 7a, 7b Perforated plate
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003324724A JP3882045B2 (en) | 2003-09-17 | 2003-09-17 | Detection paper and absorption can |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003324724A JP3882045B2 (en) | 2003-09-17 | 2003-09-17 | Detection paper and absorption can |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2005091152A JP2005091152A (en) | 2005-04-07 |
| JP3882045B2 true JP3882045B2 (en) | 2007-02-14 |
Family
ID=34455404
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2003324724A Expired - Lifetime JP3882045B2 (en) | 2003-09-17 | 2003-09-17 | Detection paper and absorption can |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3882045B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101350262B1 (en) | 2012-02-20 | 2014-01-16 | 한국과학기술연구원 | Apparatus for gas sensing by using fiber fabry-perot interferometer |
-
2003
- 2003-09-17 JP JP2003324724A patent/JP3882045B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP2005091152A (en) | 2005-04-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6701864B2 (en) | Residual life indicator | |
| CA1104043A (en) | Personal monitoring device or dosimeter, for measuring exposure of personnel to organic vapors | |
| US3966440A (en) | Colorimetric vinyl chloride indicator | |
| US4154586A (en) | Respirator cartridge end-of-service lift indicator system and method of making | |
| CN105194777B (en) | It is indicated for the remaining life of breathing mask cylinder and tank | |
| US7503962B2 (en) | End of service and residual life indicator | |
| RU2595665C2 (en) | System, indicating end of service life, for multi-layer filtering cartridges | |
| DE60039179D1 (en) | METHOD AND DEVICE FOR MEASURING FLOWS MEN | |
| JP2004530264A5 (en) | ||
| BRPI0715037A2 (en) | protective device and process for manufacturing a protective device | |
| US4692309A (en) | Diffusion sample collector for gaseous media | |
| EP0838243B1 (en) | Device for removing one or more undesirable or dangerous substances from a gas or a vapor mixture and a gas mask comprising such a device | |
| CA2269610A1 (en) | Method and apparatus for determining indirectly the concentration of a specific substance in the blood | |
| JP3882045B2 (en) | Detection paper and absorption can | |
| KR20050026923A (en) | Filter for collecting chlorinated organic compound | |
| JP3882052B2 (en) | Detection paper and absorption can | |
| JP2009521695A (en) | Reliable, individually configured measurement and warning method for air pollution and associated equipment | |
| JP2009521695A5 (en) | ||
| JP6810583B2 (en) | Enzyme sensor | |
| EP1142602A2 (en) | Anaesthetic gas filter | |
| JP2001215221A (en) | Reagent and method for detecting halide | |
| US7318910B2 (en) | Chemical dosimeter | |
| Tanaka et al. | A simple method for detecting breakthroughs in used chemical cartridges | |
| GB2053467A (en) | Detection of Arsenic Trioxide in Air | |
| CN212382143U (en) | Removable filter core gauze mask |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20051027 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20051115 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20051219 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20061017 |
|
| R150 | Certificate of patent or registration of utility model |
Ref document number: 3882045 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| S533 | Written request for registration of change of name |
Free format text: JAPANESE INTERMEDIATE CODE: R313533 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| S533 | Written request for registration of change of name |
Free format text: JAPANESE INTERMEDIATE CODE: R313533 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| EXPY | Cancellation because of completion of term |