CN102033063A - Preparation and use method of color comparison detection piece for ammonia nitrogen in water - Google Patents
Preparation and use method of color comparison detection piece for ammonia nitrogen in water Download PDFInfo
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- CN102033063A CN102033063A CN201010524008XA CN201010524008A CN102033063A CN 102033063 A CN102033063 A CN 102033063A CN 201010524008X A CN201010524008X A CN 201010524008XA CN 201010524008 A CN201010524008 A CN 201010524008A CN 102033063 A CN102033063 A CN 102033063A
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- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 title claims abstract description 69
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 42
- 238000001514 detection method Methods 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 35
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 238000006243 chemical reaction Methods 0.000 claims abstract description 6
- 239000003513 alkali Substances 0.000 claims abstract description 4
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 3
- 238000007789 sealing Methods 0.000 claims abstract description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 17
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 12
- JLDSOYXADOWAKB-UHFFFAOYSA-N aluminium nitrate Chemical compound [Al+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O JLDSOYXADOWAKB-UHFFFAOYSA-N 0.000 claims description 8
- YIXJRHPUWRPCBB-UHFFFAOYSA-N magnesium nitrate Chemical compound [Mg+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O YIXJRHPUWRPCBB-UHFFFAOYSA-N 0.000 claims description 8
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims description 6
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 5
- 239000007767 bonding agent Substances 0.000 claims description 5
- 229940100892 mercury compound Drugs 0.000 claims description 5
- 150000002731 mercury compounds Chemical class 0.000 claims description 5
- 239000011734 sodium Substances 0.000 claims description 5
- 229910052708 sodium Inorganic materials 0.000 claims description 5
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 4
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 4
- 238000004458 analytical method Methods 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 229960003316 potassium mercuric iodide Drugs 0.000 claims description 4
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
- 235000019270 ammonium chloride Nutrition 0.000 claims description 3
- VZOPRCCTKLAGPN-ZFJVMAEJSA-L potassium;sodium;(2r,3r)-2,3-dihydroxybutanedioate;tetrahydrate Chemical compound O.O.O.O.[Na+].[K+].[O-]C(=O)[C@H](O)[C@@H](O)C([O-])=O VZOPRCCTKLAGPN-ZFJVMAEJSA-L 0.000 claims description 3
- 229940074446 sodium potassium tartrate tetrahydrate Drugs 0.000 claims description 3
- 239000001856 Ethyl cellulose Substances 0.000 claims description 2
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 claims description 2
- GJYLKIZKRHDRER-UHFFFAOYSA-N calcium;sulfuric acid Chemical compound [Ca].OS(O)(=O)=O GJYLKIZKRHDRER-UHFFFAOYSA-N 0.000 claims description 2
- 238000001035 drying Methods 0.000 claims description 2
- 229920001249 ethyl cellulose Polymers 0.000 claims description 2
- 235000019325 ethyl cellulose Nutrition 0.000 claims description 2
- 229920000609 methyl cellulose Polymers 0.000 claims description 2
- 239000001923 methylcellulose Substances 0.000 claims description 2
- 239000012188 paraffin wax Substances 0.000 claims description 2
- 238000012216 screening Methods 0.000 claims description 2
- 239000002893 slag Substances 0.000 claims description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 2
- 239000004317 sodium nitrate Substances 0.000 claims description 2
- 235000010344 sodium nitrate Nutrition 0.000 claims description 2
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 2
- 235000011152 sodium sulphate Nutrition 0.000 claims description 2
- 239000003826 tablet Substances 0.000 claims 3
- 239000008367 deionised water Substances 0.000 claims 2
- 229910021641 deionized water Inorganic materials 0.000 claims 2
- 229910001051 Magnalium Inorganic materials 0.000 claims 1
- 238000013019 agitation Methods 0.000 claims 1
- 230000004888 barrier function Effects 0.000 claims 1
- 239000007891 compressed tablet Substances 0.000 claims 1
- 239000000843 powder Substances 0.000 claims 1
- 239000003153 chemical reaction reagent Substances 0.000 abstract description 8
- 239000002352 surface water Substances 0.000 abstract description 4
- 239000010842 industrial wastewater Substances 0.000 abstract description 3
- 239000010865 sewage Substances 0.000 abstract description 3
- 150000001875 compounds Chemical class 0.000 abstract description 2
- 238000011161 development Methods 0.000 abstract description 2
- 238000002955 isolation Methods 0.000 abstract 1
- 230000000873 masking effect Effects 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 150000002500 ions Chemical class 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 4
- YGSDEFSMJLZEOE-UHFFFAOYSA-N salicylic acid Chemical compound OC(=O)C1=CC=CC=C1O YGSDEFSMJLZEOE-UHFFFAOYSA-N 0.000 description 4
- 238000002798 spectrophotometry method Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 238000000926 separation method Methods 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 235000011114 ammonium hydroxide Nutrition 0.000 description 2
- 238000004737 colorimetric analysis Methods 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 239000003651 drinking water Substances 0.000 description 2
- 235000020188 drinking water Nutrition 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000004401 flow injection analysis Methods 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- FJKROLUGYXJWQN-UHFFFAOYSA-N papa-hydroxy-benzoic acid Natural products OC(=O)C1=CC=C(O)C=C1 FJKROLUGYXJWQN-UHFFFAOYSA-N 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 229960004889 salicylic acid Drugs 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- WPDYPOJHZBBFGR-UHFFFAOYSA-N C1=C(C)C=CC(C(C)C)=C1O.[Br] Chemical compound C1=C(C)C=CC(C(C)C)=C1O.[Br] WPDYPOJHZBBFGR-UHFFFAOYSA-N 0.000 description 1
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 description 1
- 235000000177 Indigofera tinctoria Nutrition 0.000 description 1
- 238000002835 absorbance Methods 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 235000013405 beer Nutrition 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000012482 calibration solution Substances 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000005206 flow analysis Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229940097275 indigo Drugs 0.000 description 1
- COHYTHOBJLSHDF-UHFFFAOYSA-N indigo powder Natural products N1C2=CC=CC=C2C(=O)C1=C1C(=O)C2=CC=CC=C2N1 COHYTHOBJLSHDF-UHFFFAOYSA-N 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 238000005497 microtitration Methods 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000012086 standard solution Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 229940095064 tartrate Drugs 0.000 description 1
- 238000004448 titration Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Landscapes
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
- Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
Abstract
The invention relates to a preparation and use method of a color comparison detection piece for ammonia nitrogen in water, in particular to a color comparison detection piece and method for semi-quantitative detection of concentration of ammonia nitrogen in water bodies. The detection piece comprises a development upper layer containing tetraiodomercurate compounds, an inert isolation layer and a reaction lower layer containing alkali and masking agents, the detection piece is prepared into a three-layer piece by pressing, and the detection piece needs to be saved in sealing and light-shielding environment and can be used effectively within 4 months. The use method comprises the following steps: directly immersing the detection piece into 10ml of water sample, joggling a color comparison cup for 10-30 minutes, comparing the color of the upper layer of the piece with the color of a standard color comparison card of ammonia nitrogen (concentration: 0-20.0mg/L), and then, estimating the concentration of the ammonia nitrogen in the water sample. The color comparison detection piece for ammonia nitrogen developed by the invention can be used for quickly detecting the concentration of the ammonia nitrogen in water bodies such as surface water, domestic sewage, industrial waste water and the like without adding any reagent. The piece has long effective period and low price and can be carried conveniently. The invention provides the simple, convenient and practical method for quickly detecting the ammonia nitrogen in mountain areas, remote areas, oceans, industrial pollution sources and the like on the site.
Description
Technical field
The present invention relates to a kind of preparation and application process thereof that detects the colorimetric detection sheet of ammonia nitrogen in the water body, belong to the environmental monitoring technology field.
Background technology
Along with the fast development of industrial technology, Sudden Pollution Accident constantly increases, and is threatening human health, is destroying ecologic environment, is seriously restricting the ecologic equilibrium and society, expanding economy.It is a lot of to take precautions against burst Pollution accident problem demanding prompt solution, top priority is to set up the emergency monitoring method and technology, in case contamination accident takes place, can drop into monitoring rapidly, in the shortest time, provide contamination data accurately, for antipollution diffusion and take counter-measure that scientific basis is provided.Therefore, extremely strong for time and spatial character, the significant Sudden Pollution Accident of random variation, on-the-spot detection obtain in time and answer comparatively accurately to detect accurate perfect answer than a laboratory of coming too lately valuable many.In-situ check and test method normally detects in real time in the workplace, promptly records whether have test substance and concentration thereof in the sample at short notice.Being used for the on-the-spot method that detects, to need sampling quantity few, and possess characteristics such as higher accuracy and sensitivity, the instrument that fast, uses easy and simple to handle are easy to carry.Comparatively ripe at present in-situ check and test method has test paper method, detector tube method, micro-titration method, Bioexperiment method, portable instrument method etc.
Water quality ammonia nitrogen detection method mainly contains Na Shi reagent method, salicylic acid spectrophotometric method, distillation-neutralization titration, indigo colourimetry, flow analysis and spectrum detection method, ion-selective electrode etc.The complex operation that these methods have, analytical cycle is long, and the liquid reagent developing time is long and stabilization time short; The instrument of the needs costliness that has is had relatively high expectations to operating personnel's professional skill, can only finish in the laboratory, can not satisfy the requirement of fast-field evaluation.For this reason, numerous researchers have carried out many improvement and innovation, especially at the scene the fast detecting aspect.Long Xiwei etc. take to add in the flow injection system method of gas disperser, allow the ammonia nitrogen in the water sample see through gas separation membrane after generating ammonia for the reaction of NaOH carrier fluid, in bromine thymol blue absorption liquid, react variable color again, use spectrophotometry, the result shows, concentration and absorbance are favorable linearity in 0～50mg/L interval, its related coefficient is 0.995, measure ammonia-nitrogen content in the water body, the recovery reach 99% (Long Xiwei, Wu Ting, Li Fang etc. the online detection of flow injection spectrophotometric method of ammonia nitrogen in the water. the naval vessel chemical defence, 2008, (2): 34-37).Zhu Ke waits ammonia nitrogen determination method in the Drinking Water that adopts the ion-selective electrode method to succeed in developing the use of a kind of suitable basic unit clearly, measure 3 parts of synthetic water samples, relative standard deviation is 0.50%～2.44%, detection limit (3 δ) 0.032mg/L, the recovery 95.0%～106.7%, that this method has is simple to operate, quick, accurate, disturb advantages such as few, stronger (the Zhu Keqing of practicality, Xie Peng. ammonia nitrogen in the ion-selective electrode method Drinking Water. straits preventive medicine magazine, 2009,15 (4): 54-55).Hou Chuanjia etc. utilize the method for gas phase uv absorption Fourier transform to develop water quality ammonia nitrogen in-line analyzer, this method selectivity height when measuring surface water and waste water, almost do not disturb, advanced technology, rational in infrastructure, have the remote transmission function, simultaneously this still is the instrument of a modular, can measure 12 parameters of as many as.Compare with classic method, have that maintenance is little, operating cost is low, anti-colourity and turbidity disturb, need not to mark every day advantages such as calibration solution (Hou Chuanjia, Wang Xin. a kind of gas phase uv absorption Fourier transform water quality ammonia nitrogen in-line analyzer of novelty. modern instrument, 2008, (2): 50-53).Nie Xuejun etc. have designed a kind of based on Na Shi reagent colourimetry moral ammonia nitrogen determination instrument, this instrument has the distillation pretreatment unit, can detect the ammonia-nitrogen content in any water sample, and be to carry out data acquisition and processing (DAP) automatically, the mensuration of ammonia-nitrogen content in the quick realization water (Nie Xuejun, Zhou Feng, Huo Liangsheng etc. the research and development of full-automatic ammonia nitrogen determination instrument. microcomputer information, 2009,25 (1): 129-130).The improvement that above-mentioned researcher is done water quality ammonia nitrogen fast-field evaluation method all is instrumental methods, and test paper method research is very few.Deng Jinhua etc. adopt the total solids mix reagent, improved salicylic acid spectrophotometric method are applied to the mensuration of water quality ammonia nitrogen.The maximum absorption wavelength of complex compound is 697nm, the ammonia nitrogen mass concentration meets Beer law between 0.01～1.00mg/L, the reaction product color keeps stablizing all interference measurements not of common coexisting ion in 3h, the fast measuring that can be used for the ambient water quality ammonia nitrogen, though have a lot of problems in this method practical application, but the test paper method that detects to the water quality ammonia nitrogen steps the (Deng Jinhua that goes a step further, Wu Qingping, Liao Fuying etc. the fast detecting of ambient water quality ammonia nitrogen. environmental monitoring management and technology, 2007,19 (1): 33-34).
Summary of the invention
The purpose of this invention is to provide and a kind ofly portably use conveniently, cheap be suitable for the tablet that environment water ammonia-nitrogen contents such as surface water, sanitary sewage, industrial waste water detect.By the detection lug colour developing depth and ammonia nitrogen concentration correlativity, realize ammonia nitrogen concentration in the water body is carried out semiquantitative method for quick.
In order to achieve the above object, the present invention utilizes the classical detection method of ammonia nitrogen: Na Shi reagent method, preparation water quality ammonia nitrogen detection lug.Concrete preparation method is as follows:
This water quality ammonia nitrogen color comparison detection lug closes the color layer that mercury meets thing, the responding layer that contains alkali and screening agent by containing the tetraiodo, and color layer and the separated inert layer of responding layer are formed.
The preparation method of described ammonia nitrogen color comparison detection lug is: the tetraiodo is closed mercury compound, inert material and bonding agent and is mixed with 1: 8: 1～5: 4: 1 ratio, uses as the colour developing upper layer of material.Mix with inert material and bonding agent ratio, as the intermediate isolating layer material with 9: 1～6: 4.Mix with inorganic sodium, NaOH and sodium potassium tartrate tetrahydrate ratio, as the reaction subsurface material with 1: 1: 1～3: 1: 1.Get down 0.5～1g responding layer material, 0.5～1g isolate in layer material, 0.3～0.5g colour developing upper layer of material put into the sheeter mould of diameter 8～20mm successively, compression molding when pressure is 5～30MPa promptly gets the ammonia nitrogen color comparison detection lug.
The above-mentioned tetraiodo is closed mercury compound preparation method: get 0.02mol aluminium nitrate, 0.01mol potassium mercuric iodide, 0.2mol NaOH or potassium hydroxide, adding 500mL does not have ammoniacal liquor, as solution A.Get 0.04～0.08mol magnesium nitrate, adding 250mL does not have ammoniacal liquor, as solution B.Use separating funnel that solution B is slowly splashed into solution A, regulate pH to 9～10, and be settled to 1L, stirring reaction two hours, centrifugal after with wet slag in 120 ℃ of drying boxes dry 4 hours.
Above-mentioned inertia medicament is commercially available analytical pure sulfuric acid calcium or nano double oxyhydroxide.
Above-mentioned binder is commercially available polynite, paraffin, ethyl cellulose, methylcellulose.
Above-mentioned inorganic sodium is the commercially available pure sodium carbonate of analysis, sodium sulphate, sodium nitrate.
Above-mentioned potassium mercuric iodide is a chemical pure; It is pure that aluminium nitrate, magnesium nitrate, NaOH, potassium hydroxide, tartrate clock sodium are analysis.
The making and methods for using them of water quality ammonia nitrogen examination criteria colorimetric card is:
A, standard color comparison card is made
Be respectively 0～20.0mg/L ammonia nitrogen standard series with the ammonium chloride compound concentration, respectively get 10 milliliters, under 25 ℃, the colorimetric detection sheet is soaked in wherein, shakes cuvette, after 15 minutes, press concentration series arrangement from low to high, take, make the ammonia nitrogen standard color comparison card with high definition camera.
B, ammonia nitrogen detects in the water sample
The colorimetric detection sheet is directly immersed～10 milliliters of water samples to be measured in, make color layer up, shake cuvette, take out after 10～20 minutes, with its colour developing upper strata and standard color comparison card color contrast, ammonia nitrogen concentration in the sample estimates.
Advantage of the present invention is:
Since water quality ammonia nitrogen color comparison detection lug of the present invention by three-deckers such as color layer, separation layer, dissolving layers, do not need to add in addition any reagent during use, have portably use conveniently, cheap characteristics, detecting for mountain area, backcountry, ocean, pollution source are on-the-spot etc. provides fast and practical approach.
2. the colorimetric detection sheet is solid-state tri-layer tablets, and the design of separation layer has improved the stability of reactant.
3 are somebody's turn to do than color chips sensing range: 0～20mg/L ammonia nitrogen is suitable for the detection of ammonia nitrogen in the various water bodys such as surface water, sanitary sewage, industrial waste water.
Embodiment
Embodiment 1
Ammonia nitrogen examination criteria colorimetric card is made
Use that the ammonium chloride compound concentration is respectively 0,0.50,1.0,2.0,3.0,5.0,10.0,20.0mg/L ammonia nitrogen standard solution, under 25 ℃, get 10 milliliters of above-mentioned solution respectively in eight 20ml glass cells, the ammonia nitrogen color comparison detection lug is soaked wherein, behind the 15min, arrange from low to high according to ammonia nitrogen concentration, take pictures and make standard color comparison card, as table 1.
Table 1 water quality ammonia nitrogen standard color comparison card
Embodiment 2
The experiment of colorimetric detection tablet stability
At ambient temperature, the sealing, the ammonia nitrogen color comparison detection lug keeps in Dark Place, when preserving 5,10,20,30,60,90,120 days, respectively to 0,2.0,10.0mg/L ammonia nitrogen solution measures, the result shows: when different time, the detection lug color of same ammonia nitrogen concentration does not have significant difference, and therefore, it is effective that this ammonia nitrogen detection lug used in 4 months.
Embodiment 3
The ammonia nitrogen of actual water sample detects
Get 10 milliliters of West Lake water and TAIHU LAKE respectively in cuvette, detection lug is soaked in wherein, take out detection lug behind the 15min, with its upper strata color and standard color comparison card contrast, in the sample estimates concentration of ammonia nitrogen be respectively 0.3,0.7mg/L, and use Na Shi reagent method, laboratory operation to record that the West Lake and TAIHU LAKE are respectively 0.269, the 0.648mg/L ammonia nitrogen, both are unanimity as a result, shows this water quality ammonia nitrogen color comparison detection lug mensuration accurately.
Claims (4)
1. the preparation and the using method of a water quality ammonia nitrogen color comparison detection lug is characterized in that, by containing the reaction lower floor that the tetraiodo is closed the colour developing upper strata of mercury compound, contained alkali and screening agent, and the inert barriers that will connect levels forms, and adds compressed tablets by sheeter.During use, directly the colorimetric detection sheet directly is soaked in the water sample, behind the certain hour, upper strata color and the comparison of ammonia nitrogen standard color comparison card, ammonia nitrogen concentration in the semiquantitative determination sample.
2. the preparation method of the described water quality ammonia nitrogen color comparison of claim 1 detection lug is characterized in that: the tetraiodo is closed mercury compound, inert material, bonding agent mix with 1: 8: 1～5: 4: 1 ratio, grind, as the tablet upper layer of material.Inert material, bonding agent are mixed with 9: 1～6: 4 ratio, grind, as the intermediate isolating layer material.Inorganic sodium, alkali, sodium potassium tartrate tetrahydrate are mixed with 1: 1: 1～3: 1: 1 ratio, grind, as the tablet subsurface material.Use pressed disc method, get 0.5～1g subsurface material, 0.5～1g insolated layer materials, 0.3～0.6g upper layer of material, will descend, in, the upper strata powder adds sheeter successively, be forced into 5～30MPa, make thickness 4～6mm, diameter 8～20mm tablet, sealing, black out are preserved, and use effectively in 4 months.
3. the described tetraiodo of claim 1 is closed mercury compound preparation method and is: get 0.02mol aluminium nitrate, 0.01mol potassium mercuric iodide, 0.2mol NaOH or potassium hydroxide, join after the mixing in the 500mL deionized water, as solution A.Get 0.04～0.08mol magnesium nitrate and join the 250mL deionized water, as solution B.Under agitation, solution B is slowly splashed into solution A, regulates terminal point pH9～10, be settled to 1L, stirred again two hours, centrifugal after with wet slag in 120 ℃ of drying boxes dry 4 hours.
Above-mentioned inert material is commercially available analytical pure sulfuric acid calcium or magnalium double-hydroxide.
Above-mentioned bonding agent is commercially available polynite, paraffin, ethyl cellulose, methylcellulose.
Above-mentioned inorganic sodium is the commercially available pure sodium carbonate of analysis, sodium sulphate, sodium nitrate.
Above-mentioned potassium mercuric iodide is a chemical pure; It is pure that aluminium nitrate, magnesium nitrate, NaOH, potassium hydroxide, sodium potassium tartrate tetrahydrate are analysis.
4. the preparation and the using method of the ammonia nitrogen standard color comparison card of claim 1 is characterized in that:
(1) the ammonia nitrogen standard color comparison card is made
With ammonium chloride compound concentration 0～20mg/L ammonia nitrogen standard series, under 25 ℃, the colorimetric detection sheet is placed in 10 ml solns, hybrid reaction 15 minutes is arranged from low to high by ammonia nitrogen concentration, takes with high definition camera and makes the ammonia nitrogen standard color comparison card.
(2) ammonia-nitrogen content detects in the actual water body
The ammonia nitrogen color comparison detection lug is immersed in～10 milliliters of water samples to be measured, make color layer up, take out to develop the color upper strata and standard color comparison card color contrast, ammonia nitrogen concentration in the direct estimation sample after 10～30 minutes.
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| CN201010524008XA CN102033063A (en) | 2010-10-28 | 2010-10-28 | Preparation and use method of color comparison detection piece for ammonia nitrogen in water |
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| CN201010524008XA CN102033063A (en) | 2010-10-28 | 2010-10-28 | Preparation and use method of color comparison detection piece for ammonia nitrogen in water |
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| CN201010524008XA Pending CN102033063A (en) | 2010-10-28 | 2010-10-28 | Preparation and use method of color comparison detection piece for ammonia nitrogen in water |
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| CN103018187A (en) * | 2012-12-10 | 2013-04-03 | 同济大学 | Method for preparing and using color developing detection sheet for measuring hydrazine in water |
| CN103033503A (en) * | 2012-12-10 | 2013-04-10 | 同济大学 | Preparation and application method of chromogenic detecting piece for determining iron in water |
| CN103776826A (en) * | 2014-01-16 | 2014-05-07 | 无限极（中国）有限公司 | Masking-agent-containing test strip for detecting content of cadmium in Chinese herbal medicine |
| CN104374771A (en) * | 2014-11-19 | 2015-02-25 | 阜阳师范学院 | Kit for rapidly detecting ammonia nitrogen content in water and detection method of kit |
| CN104535503A (en) * | 2015-01-14 | 2015-04-22 | 同济大学 | Method for preparing and using detection agent for measuring content of cobalt in water body |
| CN104568936A (en) * | 2015-01-12 | 2015-04-29 | 河北工业大学 | Ammonia nitrogen test paper and application method thereof |
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| CN104374771A (en) * | 2014-11-19 | 2015-02-25 | 阜阳师范学院 | Kit for rapidly detecting ammonia nitrogen content in water and detection method of kit |
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| CN104568936B (en) * | 2015-01-12 | 2018-01-09 | 河北工业大学 | A kind of ammonia nitrogen Test paper and its application process |
| CN104535503A (en) * | 2015-01-14 | 2015-04-22 | 同济大学 | Method for preparing and using detection agent for measuring content of cobalt in water body |
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