CN109283035A - A kind of pretreating device and method for ammonia nitrogen determination in water quality - Google Patents
A kind of pretreating device and method for ammonia nitrogen determination in water quality Download PDFInfo
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- CN109283035A CN109283035A CN201811443680.9A CN201811443680A CN109283035A CN 109283035 A CN109283035 A CN 109283035A CN 201811443680 A CN201811443680 A CN 201811443680A CN 109283035 A CN109283035 A CN 109283035A
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- Prior art keywords
- ammonia nitrogen
- water quality
- liquid
- filter
- collecting bottle
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 46
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 25
- 239000000706 filtrate Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 4
- 239000011521 glass Substances 0.000 claims description 3
- 239000012982 microporous membrane Substances 0.000 claims description 3
- 239000005373 porous glass Substances 0.000 claims description 3
- 238000002203 pretreatment Methods 0.000 abstract description 3
- 238000005259 measurement Methods 0.000 description 12
- 238000004821 distillation Methods 0.000 description 7
- 238000002798 spectrophotometry method Methods 0.000 description 7
- 238000012545 processing Methods 0.000 description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 3
- 239000003153 chemical reaction reagent Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 229960004889 salicylic acid Drugs 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000004847 absorption spectroscopy Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000008394 flocculating agent Substances 0.000 description 2
- 238000004401 flow injection analysis Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000006386 neutralization reaction Methods 0.000 description 2
- YGSDEFSMJLZEOE-UHFFFAOYSA-N salicylic acid Chemical compound OC(=O)C1=CC=CC=C1O YGSDEFSMJLZEOE-UHFFFAOYSA-N 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000004448 titration Methods 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- UGVZXMNEERSMEN-UHFFFAOYSA-N C(C=1C(O)=CC=CC1)(=O)O.[N].N Chemical compound C(C=1C(O)=CC=CC1)(=O)O.[N].N UGVZXMNEERSMEN-UHFFFAOYSA-N 0.000 description 1
- 241000219000 Populus Species 0.000 description 1
- 241001085205 Prenanthella exigua Species 0.000 description 1
- 240000000203 Salix gracilistyla Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000012851 eutrophication Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000003311 flocculating effect Effects 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 238000005206 flow analysis Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 230000036284 oxygen consumption Effects 0.000 description 1
- FJKROLUGYXJWQN-UHFFFAOYSA-N papa-hydroxy-benzoic acid Natural products OC(=O)C1=CC=C(O)C=C1 FJKROLUGYXJWQN-UHFFFAOYSA-N 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/34—Purifying; Cleaning
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Engineering & Computer Science (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
The invention discloses a kind of pretreating devices and method for ammonia nitrogen determination in water quality, the pretreating device, including filter, funnel, liquid-collecting bottle and vacuum pump, upper chamber and lower chambers are separated by filter plate in the filter, the filter plate upper surface is provided with miillpore filter, the funnel is connected to the top of upper chamber, and the liquid-collecting bottle is connected to the bottom of lower chambers, and the vacuum pump is connected to by suction channel with the side wall of lower chambers.The pre-treatment that ammonia nitrogen determination in water quality is carried out using the device, is reduced costs with risk, improves the convenience of operation and improve practicability.
Description
Technical field
The present invention relates to field of water quality detection, and in particular to a kind of pretreating device and side for ammonia nitrogen determination in water quality
Method.
Background technique
Ammonia nitrogen refers in water with free ammonia (NH3) and ammonium ion (NH4 +) nitrogen existing for form, it is the nutrient in water body,
It can lead to the generation of water eutrophication phenomenon, be the main oxygen consumption pollutant in water body, it is toxic to fish and certain aquatiles.
Ammonia nitrogen is one of most important index of evaluating water quality quality.Current each environmental monitoring station and environment measuring mechanism are for measuring
Ammonia nitrogen mainly uses professional standard in water quality: " the measurement Berthelot spectrophotometry of HJ 535-2009 Water quality ammonia nitrogen ", " HJ
Measurement distillation-neutralization titration of 537-2009 Water quality ammonia nitrogen ", " the measurement salicylic acid of HJ 536-2009 Water quality ammonia nitrogen is divided light
Degree method ", " the measurement gas-phase molecular absorption spectrometry method of HJ/T 195-2005 Water quality ammonia nitrogen ", " HJ 666-2013 Water quality ammonia nitrogen
Measure flow injection-salicylic acid spectrophotometry (Press release) ", " continuous flowing-water of the measurement of HJ 665-2013 Water quality ammonia nitrogen
Poplar acid spectrophotometry (Press release) ".
Wherein, " the measurement gas-phase molecular absorption spectrometry method of HJ/T 195-2005 Water quality ammonia nitrogen ", " HJ 666-2013 water quality
The measurement flow injection of ammonia nitrogen-salicylic acid spectrophotometry (Press release) " and " measurement of HJ 665-2013 Water quality ammonia nitrogen is continuous
Flowing-salicylic acid spectrophotometry (Press release) " respectively require using gas phase molecular absorption spectrometer, flow injection analyzer and
Continuous Flow Analysis instrument, detection unit configuration instrument and equipment will increase cost；And the reagent chemicals used in latter two method
It is many kinds of.Therefore, these three methods use less." the measurement nessler reagent spectrophotometric of HJ 535-2009 Water quality ammonia nitrogen
Method ", " measurement distillation-neutralization titration of HJ 537-2009 Water quality ammonia nitrogen ", " the measurement bigcatkin willow of HJ 536-2009 Water quality ammonia nitrogen
Sour spectrophotometry " key instrument is conventional spectrophotometer in these three methods, therefore initial cost it is low and by extensive
Using.The case where three kinds of methods are muddy, coloration is deep, there are interfering ions for water sample need to carry out pre-treatment.
Pre-treatment generally uses pre-distillation or flocculated method.Time-consuming, speed is slow, complicated for operation for pre-distillation processing, and
There are burn hazards for heating distillation.Flucculation process is relatively specific for the high water quality of turbidity, but flocculant is selective, Bu Nengxu
All suspended matters are coagulated, need to generally integrate using a variety of flocculants, and still need to filter after flocculating, operate relatively complicated.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of pretreating device and method for ammonia nitrogen determination in water quality,
And cost and risk are reduced, the convenience of operation is improved and improves practicability.
The present invention is solved the above problems by following technological means:
A kind of pretreating device for ammonia nitrogen determination in water quality, including filter, funnel, liquid-collecting bottle and vacuum pump, institute
It states in filter and upper chamber and lower chambers is separated by filter plate, the filter plate upper surface is provided with miillpore filter, the funnel
It is connected to the top of upper chamber, the liquid-collecting bottle is connected to the bottom of lower chambers, and the vacuum pump passes through suction channel and cavity of resorption
The side wall of room is connected to.
Further, the lower chambers bottom is provided with and the matched connector of liquid-collecting bottle bottleneck.
Further, the junction of the suction channel and lower chambers is provided with waterproof ventilative material film.
Further, the filter plate is porous glass plate structure, and the funnel and liquid-collecting bottle are made of glass.
A kind of pre-treating method being carried out ammonia nitrogen determination in water quality using above-mentioned apparatus, is included the following steps:
S1: device is assembled；
S2: vacuum pump, the water sample liquid relief to be processed after miillpore filter is tightly adsorbed on filter plate, after shaking up are opened
Pipe is transferred in funnel, and water sample to be processed is flowed into liquid-collecting bottle from top to bottom by filtering with microporous membrane, filtered filtrate；
S3: the filtrate in liquid-collecting bottle is taken to be tested.
Beneficial effects of the present invention:
1, consumptive material is few, at low cost.Consumptive material needed for handling a sample only has a miillpore filter, without add medicament,
It is distilled without heating, cost substantially reduces.
2, easy to operate, time-consuming short.Single, which filters, only needs one minute or so time.The way of distillation generally time-consuming 20-30 minutes,
Flocculence generally needs 5-10 minutes, need to continuously attempt to the effect of different flocculants.
3, risk is low.It is distilled without heating, is not necessarily to contact flocculation chemical reagent, reduce experiment operator safety wind
Danger.
4, required equipment is simple, practical.Equipment needed for the method for the present invention be a vacuum pump and a sets filtering device,
For testing laboratory's conventional equipment, wide adaptation range is practical.
Detailed description of the invention
The invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is overall structure diagram of the invention.
Specific embodiment
In order to make, technological means of the invention, creation characteristic, workflow, application method reach purpose and effect is easy to bright
White understanding is described further the content of present invention below in conjunction with attached drawing and specific embodiment.Obviously, described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without making creative work belongs to the model that the present invention protects
It encloses.
As shown in Figure 1, a kind of pretreating device for ammonia nitrogen determination in water quality, including filter 1, funnel 2, liquid-collecting bottle
3 and vacuum pump 4, upper chamber 6 and lower chambers 7 are separated by filter plate 5 in the filter, the filter plate upper surface is provided with micro-
Hole filter membrane 8, the funnel are connected to the top of upper chamber, and the liquid-collecting bottle is connected to the bottom of lower chambers, specifically, cavity of resorption
Room bottom be provided with the matched connector 10 of liquid-collecting bottle bottleneck, to ensure reliability that filter is connect with liquid-collecting bottle and close
Feng Xing.The vacuum pump is connected to by suction channel 9 with the side wall of lower chambers, and the junction of suction channel and lower chambers is provided with
Waterproof ventilative material film 11, so as to avoid filtrate in aspiration procedure from flowing into suction channel.Filter plate is porous glass plate structure,
Funnel and liquid-collecting bottle are made of glass.
A kind of pre-treating method being carried out ammonia nitrogen determination in water quality using above-mentioned apparatus, is included the following steps:
S1: device is assembled；
S2: vacuum pump, the water sample liquid relief to be processed after miillpore filter is tightly adsorbed on filter plate, after shaking up are opened
Pipe is transferred in funnel, and for water sample to be processed by filtering with microporous membrane, filtered filtrate flows through upper chamber under from top to bottom
It is flowed into liquid-collecting bottle after chamber；
S3: the filtrate in liquid-collecting bottle is taken to be tested.
With the method for the present invention and pre-distillation process, flocculence respectively to it is same it is a water sample is parallel handles three times, after processing
Water sample is detected, is obtained such as following table according to " the measurement Berthelot spectrophotometry of HJ 535-2009 Water quality ammonia nitrogen " method
Shown result.Table 1 is the Result of Ammonia Nitrogen Examination (mg/L) of Different front processing method.
Table 1
After being handled with the method for the present invention, the relative standard deviation to the result that ammonia nitrogen is detected is 1.13%.The present invention
Method otherness 4.06% compared with result after pre-distillation process processing, the otherness 9.15% compared with result after flocculence processing.
The result shows that the method for the present invention is compared with pre-distillation process, flocculence, testing result is without significant difference after processing.
Finally, it is stated that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although referring to compared with
Good embodiment describes the invention in detail, those skilled in the art should understand that, it can be to skill of the invention
Art scheme is modified or replaced equivalently, and without departing from the objective and range of technical solution of the present invention, should all be covered at this
In the scope of the claims of invention.
Claims (5)
1. a kind of pretreating device for ammonia nitrogen determination in water quality, it is characterised in that: including filter, funnel, liquid-collecting bottle and
Vacuum pump, the filter is interior to be separated into upper chamber and lower chambers by filter plate, and the filter plate upper surface is provided with miillpore filter,
The funnel is connected to the top of upper chamber, and the liquid-collecting bottle is connected to the bottom of lower chambers, and the vacuum pump passes through suction tube
Road is connected to the side wall of lower chambers.
2. the pretreating device according to claim 1 for ammonia nitrogen determination in water quality, it is characterised in that: the lower chambers
Bottom is provided with and the matched connector of liquid-collecting bottle bottleneck.
3. the pretreating device according to claim 2 for ammonia nitrogen determination in water quality, it is characterised in that: the suction tube
Road and the junction of lower chambers are provided with waterproof ventilative material film.
4. the pretreating device according to claim 3 for ammonia nitrogen determination in water quality, it is characterised in that: the filter plate is
Porous glass plate structure, the funnel and liquid-collecting bottle are made of glass.
5. a kind of pre-treating method for carrying out ammonia nitrogen determination in water quality using device as claimed in claim 4, which is characterized in that
Include the following steps:
S1: device is assembled；
S2: opening vacuum pump, and after miillpore filter is tightly adsorbed on filter plate, the water sample pipette to be processed after shaking up turns
It moves in funnel, water sample to be processed is flowed into liquid-collecting bottle from top to bottom by filtering with microporous membrane, filtered filtrate；
S3: the filtrate in liquid-collecting bottle is taken to be tested.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811443680.9A CN109283035A (en) | 2018-11-29 | 2018-11-29 | A kind of pretreating device and method for ammonia nitrogen determination in water quality |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811443680.9A CN109283035A (en) | 2018-11-29 | 2018-11-29 | A kind of pretreating device and method for ammonia nitrogen determination in water quality |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109283035A true CN109283035A (en) | 2019-01-29 |
Family
ID=65173142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811443680.9A Pending CN109283035A (en) | 2018-11-29 | 2018-11-29 | A kind of pretreating device and method for ammonia nitrogen determination in water quality |
Country Status (1)
| Country | Link |
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| CN (1) | CN109283035A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5529694A (en) * | 1995-05-02 | 1996-06-25 | Environmental Express, Inc. | Solid phase extraction apparatus and method of using same |
| CN202133578U (en) * | 2011-07-11 | 2012-02-01 | 湖北省环境监测中心站 | Constant pressure filter device for preprocessing of water sampling |
| CN203519607U (en) * | 2013-10-12 | 2014-04-02 | 昆明理工大学 | Device for determining drainability of paper pulp in laboratory |
| CN104458389A (en) * | 2014-12-03 | 2015-03-25 | 上海仪电科学仪器股份有限公司 | Pretreatment device for detecting content of ammonia nitrogen in water sample and use method of device |
| CN206431040U (en) * | 2017-02-14 | 2017-08-22 | 马鞍山市桓泰环保设备有限公司 | A kind of Automatic On-line ammonia Nitrogen Analyzer |
| CN207396166U (en) * | 2017-11-17 | 2018-05-22 | 四川炯测环保技术有限公司 | A kind of automatic preprocessor of water sample |
-
2018
- 2018-11-29 CN CN201811443680.9A patent/CN109283035A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5529694A (en) * | 1995-05-02 | 1996-06-25 | Environmental Express, Inc. | Solid phase extraction apparatus and method of using same |
| CN202133578U (en) * | 2011-07-11 | 2012-02-01 | 湖北省环境监测中心站 | Constant pressure filter device for preprocessing of water sampling |
| CN203519607U (en) * | 2013-10-12 | 2014-04-02 | 昆明理工大学 | Device for determining drainability of paper pulp in laboratory |
| CN104458389A (en) * | 2014-12-03 | 2015-03-25 | 上海仪电科学仪器股份有限公司 | Pretreatment device for detecting content of ammonia nitrogen in water sample and use method of device |
| CN206431040U (en) * | 2017-02-14 | 2017-08-22 | 马鞍山市桓泰环保设备有限公司 | A kind of Automatic On-line ammonia Nitrogen Analyzer |
| CN207396166U (en) * | 2017-11-17 | 2018-05-22 | 四川炯测环保技术有限公司 | A kind of automatic preprocessor of water sample |
Non-Patent Citations (1)
| Title |
|---|
| 吴巧丽 等: "水质氨氮测定的不同预处理方法的比较", 《广州化学》 * |
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Application publication date: 20190129 |
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