CN106442511A - Water quality phosphate rapid detection kit and detection method - Google Patents
Water quality phosphate rapid detection kit and detection method Download PDFInfo
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- CN106442511A CN106442511A CN201611021985.1A CN201611021985A CN106442511A CN 106442511 A CN106442511 A CN 106442511A CN 201611021985 A CN201611021985 A CN 201611021985A CN 106442511 A CN106442511 A CN 106442511A
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- G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
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Abstract
The invention discloses a water quality phosphate rapid detection kit and a detection method. The kit is composed of a 2.0mL sample bottle, a sampler, two 15mL dropping bottles, a colorimetric mark, 15 mL of a reagent A, namely acid, 5 mL of a reagent B, namely, a rate-accelerating additive and C, namely, test strips of 100 pieces per barrel. By means of the detection kit and the detection method of matched test paper of the detection kit, only 2 min is needed in the whole detection process of phosphate, the process is greatly simplified, the shelf life can reach two years, and great significance is achieved for field phosphate detection of domestic drinking water and source water thereof, boiler water, surface water, underground water, industrial water and waste water.
Description
Technical field
The present invention relates to a kind of water quality phosphate quick detection kit and detection method, belong to analytical chemistry field.
Background technology
Phosphorus is one of necessary element of biological growth, but in water body, phosphorus content is too high can make Water Eutrophication, affects water
The body ecological balance.General Phosphorus In Natural Water phosphate content is not high, the industrial wastewater of the industry such as chemical fertilizer, smelting, synthetic detergent and
A large amount of phosphorus are often contained in sanitary sewage.Phosphorus is one of important indicator of evaluating water quality.
Phosphatic at present mensure commonly uses gravimetric method, titration, the chromatography of ions, AAS, atomic absorption spectrophotometry
Photometry, capillary electrophoresis, flow injection spec-trophotometry, Raman spectroscopy and Electrode potential logging etc..Wherein AAS is
Most common method, but this method reagent dosage is big, environmental pollution weight, and interfering ion is many, loaded down with trivial details time-consuming；Other instruments method is sensitive
Degree is high, selectively good, but expensive equipment, high cost, need to be by instrument and professional it is impossible to meet the need of fast-field evaluation
Ask.
The present invention has made a kind of phosphate quick detection reagent, this reagent can be supported on filter paper, be prepared into water
Matter total-phosphorus detection test paper, whole detection process only needs to 2min, and process greatly simplifies, the shelf-life up to 2 years, for life
The scene such as Drinking water and source water, boiler water, surface water, underground water, water for industrial use, waste water total-phosphorus detection has important
Meaning.
Content of the invention
It is an object of the invention to provide a kind of water quality phosphate quick detection kit and detection method.
The technical solution used in the present invention is：
A kind of water quality phosphate quick detection kit, is made up of following reagent：2.0mL sample bottle：1；Sampler：1
Individual；15mL drop bottle：2；Colorimetric label：1；A reagent is acid, 15mL；B reagent is rate accelerating material, 5mL；C be test strips 100/
Cylinder.
Preferably, acid be sulfuric acid, hydrochloric acid, at least one in nitron.
Preferably, rate accelerating material be potassium antimony tartrate, at least one in bismuth nitrate.
Preferably, test strips are made up of substrate and colour developing indicator paper block, and indicator paper block is attached on substrate, and indicator paper block impregnated of molybdic acid
Salt, the mixed liquor of reduction system.
It is further preferred that reduction system is ascorbic acid, hydrazine sulfate, stannous chloride, sodium chloride-stannous chloride, sulfuric acid
Hydrazine, 1- amino -2- naphthol -4- sulfonic acid, sulfuric acid conjunction paramethylaminophenol, hydroquinones, phenylthiosemicarbazide, iron ammonium sulfate-really
Sugar, iron ammonium sulfate-glucose, sodium pyrosulfite, Mitouer, formaldehyde time sodium hydrogensulfite, titanium trichloride, sulphite-iron
At least one in salt, iron ammonium sulfate, sodium sulfite, sodium hydrogensulfite and antimony (III).
Preferably, molybdate be ammonium molybdate, at least one in sodium molybdate.
Preferably, colorimetric label is according to following steps preparation：
1) prepare phosphate standard solution, solution in the sample bottle and drips after A reagent shakes up, and water quality phosphate is quick
In Test paper immersion standard liquid, drip B reagent on test paper, corresponding reference colour is found out on PMS；；
2) with step 1) methods described, obtaining detectable concentration respectively is 0mg/L, 3mg/L, 10mg/L, 25mg/L, 50mg/
The reference colour that during the phosphate standard solution of L, 100mg/L, 200mg/L, 400mg/L, test paper is presented；
3) comparison PMS obtains the colour of each reference colour, by computer color-mixed and printing, obtains standard color comparison card.
A kind of using method of kit, comprises the following steps：Filter paper is put into water quality phosphate quick detection reagent mix
Close in liquid, soak, room temperature is dried or dried, and obtains phosphate quick detection test paper, takes solution in sample bottle and drips A reagent
After shaking up, test paper to be checked is inserted in standard serial solution respectively, dropping B reagent, on test paper, observes the color developing effect of test paper,
Compare with colorimetric label, paint with test paper and adjust identical color range instruction concentration to be phosphatic content in sample, if surveying
The median between color range is taken when examination value is between two color ranges.
The invention has the beneficial effects as follows：This detection reagent and detection method, only can make phosphatic whole detection process
Need 2min, process greatly simplifies, the shelf-life up to 2 years, for Drinking Water and its source water, boiler water, surface water,
The scene such as underground water, water for industrial use, waste water total-phosphorus detection has great significance.
Brief description
Fig. 1 is the view of the standard colorimetric label 1# of embodiment 1.
The technical scheme experiment effect of the test paper of Fig. 2 technical solution of the present invention and comparative example.
Specific embodiment
The present invention is further elaborated for specific examples below, but not as a limitation of the invention.
Embodiment 1：
Water quality phosphate quick detection kit,
It is made up of following reagent：2.0mL sample bottle：1；Sampler：1；15mL drop bottle：2；Test paper cylinder band color matching guide
Sign：1；A reagent is 1:3 sulfuric acid, 15mL；B reagent is 2.0% potassium antimony tartrate rate accelerating material, 5mL；C is test strips 100
Bar/cylinder.
The preparation of test strips：
Prepare the mixing nitrite ion of sodium molybdate containing 5.0g/L, 0.5g/L Mitouer, 1.5g/L sodium sulfite with pure water.By layer
Analysis filter paper is completely soaked to above-mentioned mixed liquor about 10 minutes, takes out filter paper, is vacuum dried, this filter paper is cut at a temperature of 75 DEG C
Become the fritter of 5 × 6mm, with being adhesive in base plate one end of 5 × 80mm strip, obtain water quality phosphate quick detection test paper 1#.
The preparation of standard color comparison card：
1) the phosphate standard solution being 25mg/L with pure water compound concentration, takes 1mL solution in sample bottle and drips 2
After A reagent shakes up, take out after water quality phosphate quick detection test paper is immersed 10 seconds in standard liquid, it is unnecessary on test paper to get rid of
Solution, drips 1 B reagent on test paper, gets rid of unnecessary solution, after 60 seconds, find out corresponding mark on PMS after 20 seconds
Quasi- color；
2) with step 1) methods described, obtaining detectable concentration respectively is 0mg/L, 3mg/L, 10mg/L, 25mg/L, 50mg/
The reference colour that during the phosphate standard solution of L, 100mg/L, 200mg/L, 400mg/L, test paper is presented；
3) comparison PMS obtains the colour of each reference colour, by computer color-mixed and printing, obtains standard color comparison card.
Embodiment 2：
Water quality phosphate quick detection kit,
It is made up of following reagent：2.0mL sample bottle：1；Sampler：1；15mL drop bottle：2；Test paper cylinder band color matching guide
Sign：1；A reagent is 1:3 sulfuric acid, 15mL；B reagent is 2.0% potassium antimony tartrate rate accelerating material, 5mL；C be test strips 100/
Cylinder；
The preparation of water quality phosphate quick detection test paper：
Prepare the mixing nitrite ion of sodium molybdate containing 20.0g/L, 8.0g/L Mitouer, 30.0g/L sodium sulfite with pure water.Will
Chromatography filter paper is completely soaked to above-mentioned mixed liquor about 10 minutes, takes out filter paper, is vacuum dried, by this filter paper at a temperature of 75 DEG C
It is cut into the fritter of 5 × 6mm, with being adhesive in base plate one end of 5 × 80mm strip, obtain water quality phosphate quick detection test paper 2#.
Method according to embodiment 1 prepares the preparation of standard color comparison card.
Embodiment 3：
Water quality phosphate quick detection kit,
It is made up of following reagent：2.0mL sample bottle：1；Sampler：1；15mL drop bottle：2；Test paper cylinder band color matching guide
Sign：1；A reagent is 1:3 sulfuric acid, 15mL；B reagent is 2.0% potassium antimony tartrate rate accelerating material, 5mL；C be test strips 100/
Cylinder.
The preparation of water quality phosphate quick detection test paper：
Prepare the mixing nitrite ion of ammonium molybdate containing 30.0g/L, 10.0g/L Mitouer, 40.0g/L sodium sulfite with pure water.
Chromatography filter paper is completely soaked to above-mentioned mixed liquor about 10 minutes, takes out filter paper, be vacuum dried at a temperature of 75 DEG C, this is filtered
Paper is cut into the fritter of 5 × 6mm, with being adhesive in base plate one end of 5 × 80mm strip, obtains water quality phosphate quick detection test paper
3#.
Method according to embodiment 1 prepares the preparation of standard color comparison card.
Embodiment 4：
Water quality phosphate quick detection kit,
It is made up of following reagent：2.0mL sample bottle：1；Sampler：1；15mL drop bottle：2；Test paper cylinder band color matching guide
Sign：1；A reagent is 15% hydrochloric acid, 15mL；B reagent is 2.0% potassium antimony tartrate rate accelerating material, 5mL；C is test strips 100
Bar/cylinder.
The preparation of water quality phosphate quick detection test paper：
Prepare sodium molybdate containing 20.0g/L, 5.0g/L 1-amino-2-naphthol-4-sulfonic acid, 40.0g/L pyrosulfurous acid with pure water
The mixing nitrite ion of sodium.Chromatography filter paper is completely soaked to above-mentioned mixed liquor about 10 minutes, takes out filter paper, at a temperature of 75 DEG C
Vacuum drying, this filter paper is cut into the fritter of 5 × 6mm, with being adhesive in base plate one end of 5 × 80mm strip, obtains water quality phosphoric acid
Salt quick detection test paper 4#.
Method according to embodiment 1 prepares the preparation of standard color comparison card.
Embodiment 5：
Water quality phosphate quick detection kit,
It is made up of following reagent：2.0mL sample bottle：1；Sampler：1；15mL drop bottle：2；Test paper cylinder band color matching guide
Sign：1；A reagent is 15% nitric acid, 15mL；B reagent is 2.0% bismuth nitrate rate accelerating material, 5mL；C is test strips 100/tin.
The preparation of water quality phosphate quick detection test paper：
Prepare the mixing nitrite ion of ammonium molybdate containing 30.0g/L, 5.0g/L Mitouer, 40.0g/L sodium pyrosulfite with pure water.
Chromatography filter paper is completely soaked to above-mentioned mixed liquor about 10 minutes, takes out filter paper, be vacuum dried at a temperature of 75 DEG C, this is filtered
Paper is cut into the fritter of 5 × 6mm, with being adhesive in base plate one end of 5 × 80mm strip, obtains water quality phosphate quick detection test paper
5#.
Method according to embodiment 1 prepares the preparation of standard color comparison card.
Test case 1：
The stability test of water quality phosphate quick detection test paper：
Water quality phosphate quick detection test paper 1#～5# is loaded sealing bag, is placed in 37 DEG C of baking ovens, saw every 30 days
Examine test paper outward appearance, and carry out test paper color development test, the stability test result of test paper 1#～5# is as shown in table 1～5.
The stability test result of table 1 water quality phosphate quick detection test paper 1#：
The stability test result of table 2 water quality phosphate quick detection test paper 2#：
The stability test result of table 3 water quality phosphate quick detection test paper 3#：
The stability test result of table 4 water quality phosphate quick detection test paper 4#：
The stability test result of table 5 water quality phosphate quick detection test paper 5#：
From table 1～5, the water quality phosphate quick detection test paper in embodiment 1～5 places 180 in 37 DEG C of baking ovens
After it, the test paper outward appearance of embodiment 1～3 and colour developing are all normal, but embodiment 1 color range is inconspicuous, the test paper of embodiment 4～5, surely
The qualitative test paper not as embodiment 2～3.The stability of embodiment 2～3 test paper is described very well, the held formula base plate of test paper can be kept away
During exempting to take, sample is by people's hand contamination, fool proof reliability.
Choose the phosphate of the detection paper water sample of embodiment 2, after measured, the response time is less than 60 seconds, has developed the color
After entirely, color can be stablized 3 minutes, illustrates that the assay method test speed of the present invention is fast, good stability.
Test case 2：
Interference experiment：
Choose test paper and the 0,50mg/LPO of embodiment 2 preparation4 3-Standard liquid carries out verification experimental verification, and sample contains 100mg/L's
Fe2+、Al3+、Mn2+、Ag+、Ca2+、Pb2+、Cu2+、Cd2+、NO3 -、CN-Noiseless to test paper color development；NH containing 1000mg/L4 +To examination
Paper displaing color is noiseless；H containing 500mg/L2O2, cetyl ammonium bromide, polyvinylpyrrolidone, cationic surfactant pair
Test paper color development is noiseless；Si containing 10mg/L2+、NO2 -、S2-、SiO3 2-、F-Noiseless to test paper color development.
Test case 3：
Actual sample test and recovery of standard addition experiment：
Choose sample 1～3, phosphate is carried out using the test paper of embodiment 2 and tests and carry out recovery testu.Work as sample
When nitrite ion colour developing is consistent with standard color range, color range instruction concentration is directly taken to be measured value.If color is inconsistent, just according to test paper
It is measured value (estimating readings should be between close two color range instruction concentration) that shade estimates a certain concentration of reading.
Method of testing is as follows：Take 1mL sample in the sample bottle and drip after 2 A reagent shake up, test paper 2# is inserted sample
In take out after 10 seconds, get rid of unnecessary solution on test paper, drip 1 B reagent on test paper, after 20 seconds, get rid of unnecessary solution, 60
Observe the color developing effect of test paper after second, compare with colorimetric label, paint with test paper and adjust identical color range instruction concentration to be
Phosphatic content (mg/L) in sample, if take the median between color range when test value is between two color ranges.As shown in Table 6:
HKM method for quick and national standard method, MN test paper method testing result no significant difference.
In table 6 water sample, phosphatic mark-on reclaims measure
Note：Sample 1 is laboratory running water；Sample 2 is certain village's sanitary wastewater；Sample 3 is river.
The method of the present invention need not other instruments and professional, easy and simple to handle, detection sensitivity is high, reliable results,
There is higher practical value.
Above-described embodiment is the present invention preferably embodiment, but embodiments of the present invention are not subject to above-described embodiment
Limit, other any Spirit Essences without departing from the present invention and the change made under principle, modification, replacement, combine, simplify,
All should be equivalent substitute mode, be included within protection scope of the present invention.
Comparative example
Prepare developer (facing the used time now to join)：Take 0.2% ammonium molybdate solution 14.25mL, 20g/L Mitouer and 90g/L sub-
Sodium sulphate mixed solution 1.65mL, 10% Tween-80 solution 0.75mL, fully mix standby；0.04g/L phosphorus Standard Applying Solution；
10min in 37 DEG C of water temperature cases is placed, with blank tube zeroing, 680nm colorimetric, operation is shown in Table 7 after mixing.Make examination by said ratio
Paper, test paper poor sensitivity, 100mg/L phosphate standard liquid can develop the color, and develop the color and add soon slightly after the accelerator in the dropping present invention
Deep, accompanying drawing 2 is PO4 3-Concentration is that (test paper in the first from left document middle accelerates colour developing figure during 400mg/L for test paper dropping in document
Agent, right one is test paper of the present invention).
Table 7 determination of inorganic phosphorus operating procedure
Claims (8)
1. a kind of water quality phosphate quick detection kit, is made up of following reagent：
2.0mL sample bottle：1；
Sampler：1；
15mL drop bottle：2；
Colorimetric label：1；
A reagent is acid, 15mL；
B reagent is rate accelerating material, 5mL；
C is test strips 100/tin.
2. quick detection kit according to claim 1 is it is characterised in that described acid is sulfuric acid, hydrochloric acid, nitron
In at least one.
3. quick detection kit according to claim 1 is it is characterised in that described rate accelerating material is potassium antimony tartrate, nitre
At least one in sour bismuth.
4. quick detection kit according to claim 1 is it is characterised in that described test strips are by substrate and colour developing test paper
Block forms, and indicator paper block is attached on substrate, and indicator paper block impregnated of the mixed liquor of molybdate, reduction system.
5. quick detection kit according to claim 4 is it is characterised in that described reduction system is ascorbic acid, sulphur
Sour hydrazine, stannous chloride, sodium chloride-stannous chloride, sulphuric acid leaching, 1- amino -2- naphthol -4- sulfonic acid, sulfuric acid close paramethylaminophenol,
Hydroquinones, phenylthiosemicarbazide, iron ammonium sulfate-fructose, iron ammonium sulfate-glucose, sodium pyrosulfite, Mitouer, formaldehyde
Secondary sodium hydrogensulfite, titanium trichloride, sulphite-molysite, iron ammonium sulfate, sodium sulfite, sodium hydrogensulfite and antimony (III)
In at least one.
6. quick detection kit according to claim 4 is it is characterised in that described molybdate is ammonium molybdate, sodium molybdate
In at least one.
7. quick detection kit according to claim 1 is it is characterised in that described colorimetric label is according to following steps
Preparation：
1）Prepare phosphate standard solution, solution in the sample bottle and drips after A reagent shakes up, by water quality phosphate quick detection
In test paper immersion standard liquid, drip B reagent on test paper, corresponding reference colour is found out on PMS；
2）With step 1）Methods described, respectively obtain detectable concentration be 0mg/L, 3mg/L, 10mg/L, 25mg/L, 50mg/L,
The reference colour that during the phosphate standard solution of 100mg/L, 200mg/L, 400mg/L, test paper is presented；
3）Comparison PMS obtains the colour of each reference colour, by computer color-mixed and printing, obtains standard color comparison card.
8. the using method of the kit according to claim 1～7 any one right, comprises the following steps：By filter paper
Put in water quality phosphate quick detection reagent mixed liquor, soak, room temperature is dried or dried, obtain the examination of phosphate quick detection
Paper, takes solution in the sample bottle and drips after A reagent shakes up, test paper to be checked is inserted in standard serial solution respectively, dropping B examination
Agent, on test paper, is observed the color developing effect of test paper, is compared with colorimetric label, paints with test paper and adjusts the instruction of identical color range dense
Degree is phosphatic content in sample, if taking the median between color range when test value is between two color ranges.
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| CN201611021985.1A CN106442511A (en) | 2016-11-21 | 2016-11-21 | Water quality phosphate rapid detection kit and detection method |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109324042A (en) * | 2018-09-12 | 2019-02-12 | 盛世惠泽科技（天津）有限公司 | A kind of water quality total phosphorus detection kit |
| CN110095457A (en) * | 2019-04-17 | 2019-08-06 | 广东环凯微生物科技有限公司 | A kind of the measurement test paper and rapid assay methods of chlorine residue |
| CN111715312A (en) * | 2019-03-21 | 2020-09-29 | 首都师范大学 | Paper-based micro-fluidic chip for multi-parameter analysis of water quality detection and manufacturing method thereof |
| CN112362647A (en) * | 2020-11-06 | 2021-02-12 | 洛阳莱博图电子科技有限公司 | Novel prefabricated reagent |
| US11498069B2 (en) | 2020-08-31 | 2022-11-15 | International Business Machines Corporation | Rapid testing device for wastewater analysis |
| US11618032B2 (en) | 2020-08-31 | 2023-04-04 | International Business Machines Corporation | Multiplexed testing strip device |
| CN116429759A (en) * | 2023-02-15 | 2023-07-14 | 北京连华永兴科技发展有限公司 | Phosphate colorimetric detection test paper and preparation method and application thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101813632A (en) * | 2010-04-02 | 2010-08-25 | 同济大学 | Preparation method of water quality phosphate color comparison detection card and application method thereof |
| CN102879241A (en) * | 2011-07-13 | 2013-01-16 | 上海绿帝环保科技有限公司 | Rapid phosphate detection tablet |
| CN102914539A (en) * | 2012-11-15 | 2013-02-06 | 北京大学 | Method and kit for utilizing Mo-Sb antiluminosity method to detect content of orthophosphate in water |
| CN103293114A (en) * | 2012-02-22 | 2013-09-11 | 中国人民解放军海军工程大学 | Visual colorimetry for determination of phosphates |
-
2016
- 2016-11-21 CN CN201611021985.1A patent/CN106442511A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101813632A (en) * | 2010-04-02 | 2010-08-25 | 同济大学 | Preparation method of water quality phosphate color comparison detection card and application method thereof |
| CN102879241A (en) * | 2011-07-13 | 2013-01-16 | 上海绿帝环保科技有限公司 | Rapid phosphate detection tablet |
| CN103293114A (en) * | 2012-02-22 | 2013-09-11 | 中国人民解放军海军工程大学 | Visual colorimetry for determination of phosphates |
| CN102914539A (en) * | 2012-11-15 | 2013-02-06 | 北京大学 | Method and kit for utilizing Mo-Sb antiluminosity method to detect content of orthophosphate in water |
Non-Patent Citations (2)
| Title |
|---|
| 莫珊 等: "水体中PO_4_3_P的主要检测方法", 《西部皮革》 * |
| 郑本亨: "水中微量磷的磷钼蓝光度法测定——还原剂的研究", 《理化检验—化学分册》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109324042A (en) * | 2018-09-12 | 2019-02-12 | 盛世惠泽科技（天津）有限公司 | A kind of water quality total phosphorus detection kit |
| CN111715312A (en) * | 2019-03-21 | 2020-09-29 | 首都师范大学 | Paper-based micro-fluidic chip for multi-parameter analysis of water quality detection and manufacturing method thereof |
| CN110095457A (en) * | 2019-04-17 | 2019-08-06 | 广东环凯微生物科技有限公司 | A kind of the measurement test paper and rapid assay methods of chlorine residue |
| US11498069B2 (en) | 2020-08-31 | 2022-11-15 | International Business Machines Corporation | Rapid testing device for wastewater analysis |
| US11618032B2 (en) | 2020-08-31 | 2023-04-04 | International Business Machines Corporation | Multiplexed testing strip device |
| CN112362647A (en) * | 2020-11-06 | 2021-02-12 | 洛阳莱博图电子科技有限公司 | Novel prefabricated reagent |
| CN116429759A (en) * | 2023-02-15 | 2023-07-14 | 北京连华永兴科技发展有限公司 | Phosphate colorimetric detection test paper and preparation method and application thereof |
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