CN1286402A - Process for preparing 5 kinds of test paper to quickly detect frequently encountered pollutants in ambient water - Google Patents
Process for preparing 5 kinds of test paper to quickly detect frequently encountered pollutants in ambient water Download PDFInfo
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- CN1286402A CN1286402A CN 99116816 CN99116816A CN1286402A CN 1286402 A CN1286402 A CN 1286402A CN 99116816 CN99116816 CN 99116816 CN 99116816 A CN99116816 A CN 99116816A CN 1286402 A CN1286402 A CN 1286402A
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Abstract
A process for preparing 5 kinds of test paper for quickly detecting the commonly encountered pollutants (nitrite radical, ammonia nitrogen, iron, copper and chlorine) in ambient water, their basic test principle and technical scheme, and their example are disclosed. Its advantages are high reaction sensitivity, semi-quantitative test, easy operation and long storage period.
Description
The present invention is used for the method for making of the common pollutant fast detecting of Environmental Water with five kinds of test paper.
Environmental problem is the significant problem of contemporary mankind's common concern, and for solving the serious environmental problems that the mankind face, creation of beauty a good life environment is realized the strategy of sustainable development, and the Environmental Water monitoring means is more and more paid attention to by people.Because it mostly is spot sampling that the environment water pollutant detects, indoor check and analysis, it is strongly professional, complex procedures, expend time in and financial resources, and this carries out water pollution monitoring and water analysis to most of grass-roots units and backcountry are regular, and financial resources are also inadequate.At present, replace chemical method in fields such as clinical examination, medicine, Food Inspection with test paper method both at home and abroad.As the series of tests test paper of German MERCK company production and selling, the Urine test paper of Suzhou first pharmaceutical factory and pH test paper commonly used etc.Adopt the test paper test to have simple and easy, quick and economic characteristics, but its exist specificity strong, detect limit for height, the high deficiency of price, detect in particular for the common pollutant of Environmental Water and still belong to rarely with test paper.
The object of the invention is to overcome above-mentioned weak point of the prior art, provide a kind of easy, quick, be quick on the draw, the color range scope is big, precision is higher, price is cheaper is applicable to that the common pollutant of Environmental Water (nitrite anions, ammonia nitrogen, full iron, copper and chlorine residue) fast detecting dependency is divided into five classes, the general character that has by each class material, adopt chromogenic reaction principle on the paper, be made into five class Environmental Water pollutants and detect the method for using test paper.
Purpose of the present invention can be achieved through the following technical solutions.Common pollutant fast detecting is characterized in that with the method for making of five kinds of test paper in a kind of Environmental Water:
(1) the nitrite anions test paper is made developer with naphthodiamide, reagent concentration is 0.2-1%, sulfamido is made diazo reagent, concentration is 0.3-1%, and absolute ethyl alcohol is made solvent, and citric acid and sodium citrate are as assistant, thick type filter paper absorption, color range be light red to aubergine series, the color range scope is 0-80mg/L, minimum detectability is 0.5mg/L;
(2) the ammonia nitrogen test paper is made developer with potassium mercuric iodide, water as solvent, wherein mercuric iodixde concentration is 12-30%, potassium iodide concentration is 8-20%, sodium potassium tartrate tetrahydrate 0.2-1%, slim filter paper absorption, color range is light yellow to pale brown color system, the color range scope is 0-80mg/L, and minimum detectability is 0.4mg/L;
(3) full paper of iron,test is made developer with dipyridine, and reagent concentration is 1-5%, and oxammonium hydrochloride is made reductive agent, concentration is 10-25%, slim filter paper absorption, and color range is that shallow the West is red to dark crimson lake color system, the color range scope is 0-100mg/L, and minimum detectability is 0.5mg/L;
(4) paper of copper,test is made developer with BCO (bisoxalydihydrazone), and concentration is 0.3-3%, citrate 0.5-5%, solvent is an ethanol, thick type filter paper absorption, and color range is light blue to mazarine series, the color range scope is 0-100mg/L, and minimum detectability is 1mg/L;
(5) chlorine residue is with N, and the N-diethyl p-phenylenediamine makes developer, and concentration is 0.5-5%, and water is solvent, thick type filter paper absorption, and color range is that lightpink arrives pink series, and the color range scope is 0-100mg/L, and minimum detectability is 0.3mg/L.
Advantage of the present invention is as follows:
Advantage of the present invention is that manufacture craft is simple, need not the particular surroundings requirement, does not have special three-waste pollution, and is with low cost.The Environmental Water pollutant that adopts the inventive method to make detects five kinds of test paper of usefulness, have easy and simple to handle, quick, be quick on the draw, the color range scope is big, precision is higher, cheap, storage life is long characteristics, an optional wherein class method for making, all can be made into the commodity test paper, also five kinds of test paper can be combined into Environmental Water pollutant detection specialized package and sell in the lump.
The test paper that adopts the inventive method to make is applicable to the detection to five kinds of common pollutants in the Environmental Water of scene and basic unit laboratory.As the check of environmental monitoring station of basic unit to water quality, the factory laboratory is to water examination, and rural area and backcountry are detected water quality at any time, and the middle school is carried out extracurricular scientific and technological activities, used when elective course is investigated water quality.
Embodiment:
With embodiment the technical scheme of the inventive method is further described below.The method for making of five kinds of test paper of the common pollutant fast detecting of a kind of Environmental Water, be the method for making of nitrite anions common in the testing environment water, ammonia nitrogen, copper, full iron and chlorine residue test paper, five kinds of test paper making of this method are exclusively used in the usefulness to the detection of Environmental Water.Now detection principle, method for making and the preservation condition of five class material test paper, using method, measurement range etc. are summarized as follows: 1, nitrite anions test paper (1) detects principle
In the acid medium, the reaction of nitrite ion and sulfamido generates diazo salt in the sample, generates orchil with naphthodiamide again.(2) making of test paper and preservation
Obtain solution: wherein sulfanilamide (SN) accounts for 0.3-1%, citric acid 6-18%, and sodium citrate 0.1-1% immersed 3-5 minute with thick type filter paper, took out in 30-50 ℃ of drying in oven; Prepare the naphthodiamide ethanolic solution of 0.2-1% again, the filter paper that previous step is dried immersed wherein 3-5 minute, was put into 30-60 ℃ of drying in oven, be cut into small pieces, stick on the plastic sheet, and the packing of putting into the lucifuge protection against the tide preserves, about 1 year effective service life.
Test paper should be kept at shady and cool dry place, and storage temperature is preferably lower than 26 ℃.If temperature is higher than 25 ℃, then should be put into unworn test paper bag in the fresh-keeping layer in the refrigerator and preserves.Below various test paper store methods identical.(3) using method
A. water sample pH can be between 1-14, if pH can transfer with sodium acetate less than 1 o'clock
Joint acidity; PH can regulate acidity to pH3-5 with tartrate greater than 14 o'clock.
B. from the tiny pocket of dress test paper, take out 1 test strips (remaining is sealed immediately),
The test strips reaction zone is immersed water sample, take out (this moment test paper after 1 second immediately
The bar reaction zone is moistening).
C. shrug off excessive solution on the test strips immediately, after 1～2 minute with standard color range ratio
Look.
D. measurement range: 0,0.5,2,5,10,20,40, the 80mg/L nitrite anions,
If nitrite anions surpasses 80mg/L in the water sample, measure again after can diluting in proportion.2. ammonia ammonia test paper
(1) detects principle
The alkaline solution of potassium mercuric iodide can generate yellow to brown cooperating with ammonia react
Thing.
(2) making of test paper and preservation
The 12-30g mercuric iodixde adds the 8-20g potassium iodide, is dissolved in the 100ml distilled water, adds the 0.2-1g sodium potassium tartrate tetrahydrate, slim filter paper was immersed 3-5 minute,, be cut into small pieces in 30-60 ℃ of drying in oven, stick on the plastic sheet, and the packing of putting into the lucifuge protection against the tide preserves, about 1 year effective service life.
Test paper should be kept at shady and cool dry place, and storage temperature is preferably lower than 26 ℃.
(3) using method a, water sampling 1ml add 1 6mol/L NaOH solution, shake up.B, sample is dripped test strips reaction zone (1-2 drips) with the suction pipe of clean dried,
Allow test solution be retained in the surface.C, wait reference standard color range colorimetric (about 15 ℃) after 3 minutes.D, measurement range: 0,0.4,1.6,4.0,8.0,20,40, the 80mg/L ammonia nitrogen,
If sample solution concentration surpasses 80mg/L, measure again after can diluting in proportion.
3. full paper of iron,test
(1) detects principle
In the presence of reductive agent ferric iron is reduced to ferrous iron, ferrous iron can generate stable Western red complex with the dipyridine reaction.
(2) making of test paper and preservation
Get the 1-5g dipyridine, the 10-25g oxammonium hydrochloride, adding distil water is to 100ml, slim filter paper immersion after 3-5 minute, is taken out 30-50 ℃ of oven dry in baking oven, be cut into small pieces, stick on the plastic sheet, and the packing of putting into the lucifuge protection against the tide preserves, about 1 year effective service life.
Test paper should be kept at shady and cool dry place, and storage temperature is preferably lower than 26 ℃.
(3) exist if any solids such as iron filings in using method a, the sample, should add 1-5 and drip hydrochloric acid, heating makes it molten
Separate.The pH value of b, sample should be about 5.If can adding the sodium acetate solid, slant acidity reconciles,
If can adding a small amount of diluted acid, meta-alkalescence reconciles.C, with suction pipe sample is dropped in that (1) allows test solution be retained in the surface on the test strips reaction zone.D, wait reference standard color range colorimetric (about 15 ℃) after 3 minutes.0,0.5,2,5,10,25,50, the full iron of 100mg/L e, measurement range:.Examination
Measure again after can diluting in proportion when sample concentration surpasses the full iron of 100mg/L.4, paper of copper,test (1) detects principle
Copper and BCO (bisoxalydihydrazone) reaction generates blue complex.
(2) making of test paper and preservation
The 0.5-5g citrate is dissolved in the 100ml distilled water, thick type filter paper was immersed 3-5 minute, take out in 30-60 ℃ of oven dry, other gets 0.3-3gBCO and is dissolved in the 100ml ethanolic solution, the filter paper of drying is above immersed wherein take out 30-60 ℃ of oven dry down in baking oven after 3-5 minute, be cut into small pieces, stick on the plastic sheet, and the packing of putting into the lucifuge protection against the tide preserves, more than half a year effective service life.
Test paper should be kept at shady and cool dry place, and storage temperature is preferably lower than 26 ℃.
(3) using method
A. get the 2ml sample and place small beaker, add 2 of the interior supporting test solutions of Cu (compound method: citric acid salt, concentration are 30%～80%) of plastic bottle, in the test strips reaction zone immersion sample 1 second, make test strips reaction zone complete wetting.
B. shrug off sample solution excessive on the test strips immediately, about 20 ℃, after 1 minute again with standard color range colorimetric.
C. the pH scope used of test paper is 5-10, adjusts acidity in advance in this scope external demand.General acid the mistake can add a small amount of dilute alkaline soln adjusting by force; Alkalescence is crossed can add a small amount of dilute acid soln adjusting by force.
0,1,5,10,20,30,50,100mg/L Cu d. measurement range:.If sample solution concentration is higher than 100mg/L, measure again after then solution being diluted in proportion.5, chlorine residue test paper
(1) detects principle
Chlorine residue N in the solution of pH=6.6, N-diethyl p-phenylenediamine (being called for short DPD) generates the aubergine compound, and the colour developing depth is directly proportional with contents of residual chlorine.
(2) making of test paper and preservation
With 0.5-5gDPD, the 0.2-1.5gEDTA disodium salt is dissolved in the 100ml distilled water, immerses wherein 3-5 minute with thick type filter paper, in 30-60 ℃ of oven dry, be cut into small pieces, stick on the plastic sheet, and the packing of putting into the lucifuge protection against the tide preserves, about half a year effective service life.
Test paper should be kept at shady and cool dry place, and storage temperature is preferably lower than 26 ℃.
(3) using method
A. the pH value of water sample is transferred to 7.
B. from the tiny pocket of dress test paper, take out 1 test strips (remaining is sealed immediately),
The test strips reaction zone is immersed water sample, take out immediately after 1 second, at this moment test strips
Reaction zone is wetting.
C. shrug off excessive solution on the test strips immediately, immediately with standard color range colorimetric.
D. generally under 20 ℃, fade after 15 seconds.
E. measurement range: 0,03,1,5,10,20,50, the 100mg/L chlorine residue,
If chlorine residue surpasses 100mg/L in the water sample, measure again after can diluting in proportion.
F.pH is advisable to be controlled at 6.6, and the too high or too low colour developing degree of depth that all makes of pH reduces.
Five kinds of test paper that above embodiment exemplified with the inventive method making, the color range scope of its setting, minimum detectability amount, through repeated experiments repeatedly, the testing result data are consistent with standard model, and through the checking of domestic authoritative test organization, reappearance and having good stability.
Claims (1)
- Common pollutant fast detecting is with the method for making of five kinds of test paper in a kind of Environmental Water, it is characterized in that: (1) nitrite anions test paper is made developer with naphthodiamide, reagent concentration is 0.2-1%, and sulfamido is made diazo reagent, and concentration is 0.3-1%, absolute ethyl alcohol is made solvent, citric acid and sodium citrate are as assistant, and thick type filter paper adsorbs, and color range is that light red is to aubergine series, the color range scope is 0-80mg/L, and minimum detectability is 0.5mg/L; (2) the ammonia nitrogen test paper is made developer with potassium mercuric iodide, water as solvent, wherein mercuric iodixde concentration is 12-30%, potassium iodide concentration is 8-20%, sodium potassium tartrate tetrahydrate 0.2-1%, slim filter paper absorption, color range is light yellow to pale brown color system, the color range scope is 0-80mg/L, and minimum detectability is 0.4mg/L; (3) full paper of iron,test is made developer with dipyridine, and reagent concentration is 1-5%, and oxammonium hydrochloride is made reductive agent, concentration is 10-25%, slim filter paper absorption, and color range is that shallow the West is red to dark crimson lake color system, the color range scope is 0-100mg/L, and minimum detectability is 0.5mg/L; (4) paper of copper,test is made developer with BCO (bisoxalydihydrazone), and concentration is 0.3-3%, citrate 0.5-5%, solvent is an ethanol, thick type filter paper absorption, and color range is light blue to mazarine series, the color range scope is 0-100mg/L, and minimum detectability is 1mg/L; (5) chlorine residue is with N, and the N-diethyl p-phenylenediamine makes developer, and concentration is 0.5-5%, and water is solvent, thick type filter paper absorption, and color range is that lightpink arrives pink series, and the color range scope is 0-100mg/L, and minimum detectability is 0.3mg/L.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99116816 CN1286402A (en) | 1999-08-27 | 1999-08-27 | Process for preparing 5 kinds of test paper to quickly detect frequently encountered pollutants in ambient water |
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| CN 99116816 CN1286402A (en) | 1999-08-27 | 1999-08-27 | Process for preparing 5 kinds of test paper to quickly detect frequently encountered pollutants in ambient water |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100429505C (en) * | 2005-09-21 | 2008-10-29 | 广东环凯微生物科技有限公司 | Reagent for quick detection of ammonia and nitrogen concentration in water and use method thereof |
| CN101750480A (en) * | 2008-12-02 | 2010-06-23 | 中国科学院南京土壤研究所 | Quick detection method of rice root system nitrification |
| CN102033063A (en) * | 2010-10-28 | 2011-04-27 | 上海绿帝环保科技有限公司 | Preparation and use method of color comparison detection piece for ammonia nitrogen in water |
| CN104568936A (en) * | 2015-01-12 | 2015-04-29 | 河北工业大学 | Ammonia nitrogen test paper and application method thereof |
| CN104931491A (en) * | 2015-06-02 | 2015-09-23 | 北京福德安科技有限公司 | Six-in-one test paper for quickly detecting heavy metal residues |
| CN105548047A (en) * | 2015-12-23 | 2016-05-04 | 无锡吉进环保科技有限公司 | A detecting agent of residual chlorine in drinking water |
| CN107192710A (en) * | 2017-05-23 | 2017-09-22 | 田牧晓 | The preparation method of ammonia nitrogen quick detection test paper in a kind of water |
| CN111220607A (en) * | 2020-01-19 | 2020-06-02 | 英德市科恒新能源科技有限公司 | Copper color developing solution and preparation method and application thereof |
| CN112577948A (en) * | 2020-12-03 | 2021-03-30 | 武汉理工大学 | Copper ion rapid detection method and device |
-
1999
- 1999-08-27 CN CN 99116816 patent/CN1286402A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100429505C (en) * | 2005-09-21 | 2008-10-29 | 广东环凯微生物科技有限公司 | Reagent for quick detection of ammonia and nitrogen concentration in water and use method thereof |
| CN101750480A (en) * | 2008-12-02 | 2010-06-23 | 中国科学院南京土壤研究所 | Quick detection method of rice root system nitrification |
| CN101750480B (en) * | 2008-12-02 | 2013-06-19 | 中国科学院南京土壤研究所 | Quick detection method of rice root system nitrification |
| CN102033063A (en) * | 2010-10-28 | 2011-04-27 | 上海绿帝环保科技有限公司 | Preparation and use method of color comparison detection piece for ammonia nitrogen in water |
| CN104568936A (en) * | 2015-01-12 | 2015-04-29 | 河北工业大学 | Ammonia nitrogen test paper and application method thereof |
| 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 |
| CN104931491A (en) * | 2015-06-02 | 2015-09-23 | 北京福德安科技有限公司 | Six-in-one test paper for quickly detecting heavy metal residues |
| CN104931491B (en) * | 2015-06-02 | 2018-03-27 | 北京福德安科技有限公司 | A kind of 61 test paper of conjunction for heavy-metal residual quick detection |
| CN105548047A (en) * | 2015-12-23 | 2016-05-04 | 无锡吉进环保科技有限公司 | A detecting agent of residual chlorine in drinking water |
| CN107192710A (en) * | 2017-05-23 | 2017-09-22 | 田牧晓 | The preparation method of ammonia nitrogen quick detection test paper in a kind of water |
| CN111220607A (en) * | 2020-01-19 | 2020-06-02 | 英德市科恒新能源科技有限公司 | Copper color developing solution and preparation method and application thereof |
| CN112577948A (en) * | 2020-12-03 | 2021-03-30 | 武汉理工大学 | Copper ion rapid detection method and device |
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