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Solid reagent for detecting total phosphorus in water and detection method

A solid reagent and water quality technology, which is applied in the direction of measuring devices, color/spectral characteristic measurement, and analysis using chemical indicators, etc., can solve the problems of short shelf life, inconvenient carrying of detection reagents, and unsuitability for on-site detection, etc., so as to achieve easy portability and detection The results are accurate and reliable

Pending Publication Date: 2022-05-13
辽宁大唐国际阜新煤制天然气有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These solutions have the disadvantage of short shelf life, such as ammonium molybdate solution and potassium persulfate solution, which have a shelf life of 2 months, ascorbic acid can only be stored for 7 days in summer, and stored in the refrigerator for 2 weeks, etc., and the detection reagents in the form of solutions are inconvenient to carry and are not suitable for field use. detection etc.

Method used

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  • Solid reagent for detecting total phosphorus in water and detection method
  • Solid reagent for detecting total phosphorus in water and detection method
  • Solid reagent for detecting total phosphorus in water and detection method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Each reagent pack in the solid reagent used for the detection of total phosphorus in water in this embodiment has the following composition.

[0034] 1. Preparation of potassium persulfate-sodium sulfate reagent pack

[0035] A potassium persulfate-sodium sulfate reagent contains: 0.03g of potassium persulfate, 0.07g of sodium sulfate.

[0036] 2. Preparation of ammonium molybdate-sodium chloride reagent pack

[0037] One ammonium molybdate-sodium chloride reagent contains: 0.025g of ammonium molybdate, 0.075g of sodium chloride.

[0038] 3. Preparation of potassium bisulfate reagent pack

[0039] One potassium bisulfate reagent contains 0.9 g of potassium bisulfate powder.

[0040] 4. Preparation of ascorbic acid-sodium sulfite reagent pack

[0041] An ascorbic acid-sodium sulfite reagent contains: 0.025g of ascorbic acid, 0.075g of sodium sulfite.

Embodiment 2

[0043] Each reagent pack in the solid reagent used for the detection of total phosphorus in water in this embodiment has the following composition.

[0044] 1. Preparation of potassium persulfate-sodium sulfate reagent pack

[0045] A potassium persulfate-sodium sulfate reagent contains: 0.04g of potassium persulfate, 0.06g of sodium sulfate.

[0046] 2. Preparation of ammonium molybdate-sodium chloride reagent pack

[0047] One ammonium molybdate-sodium chloride reagent contains: 0.035g of ammonium molybdate, 0.065g of sodium chloride.

[0048] 3. Preparation of potassium bisulfate reagent pack

[0049] One potassium bisulfate reagent contains 1.1 g of potassium bisulfate powder.

[0050] 4. Preparation of ascorbic acid-sodium sulfite reagent pack

[0051] One ascorbic acid-sodium sulfite reagent contains: 0.032g of ascorbic acid, 0.068g of sodium sulfite.

Embodiment 3

[0053] Each reagent pack in the solid reagent used for the detection of total phosphorus in water in this embodiment has the following composition.

[0054] 1. Preparation of potassium persulfate-sodium sulfate reagent pack

[0055] A potassium persulfate-sodium sulfate reagent contains: 0.033g of potassium persulfate, 0.067g of sodium sulfate.

[0056] 2. Preparation of ammonium molybdate-sodium chloride reagent pack

[0057] One ammonium molybdate-sodium chloride reagent contains: 0.042g of ammonium molybdate, 0.058g of sodium chloride.

[0058] 3. Preparation of potassium bisulfate reagent pack

[0059] One potassium bisulfate reagent contains 0.8 g of potassium bisulfate powder.

[0060] 4. Preparation of ascorbic acid-sodium sulfite reagent pack

[0061] One ascorbic acid-sodium sulfite reagent contains: 0.041g of ascorbic acid, 0.059g of sodium sulfite.

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Abstract

The invention provides a solid reagent for detecting total phosphorus in water. The solid reagent comprises the following solid reagent bags: a potassium persulfate-sodium sulfate reagent bag, an ammonium molybdate-sodium chloride reagent bag, a potassium hydrogen sulfate reagent bag and an ascorbic acid-sodium sulfite reagent bag. The invention also provides a detection method for detecting total phosphorus in water, which uses the solid reagent for detecting total phosphorus in water. The solid detection reagent provided by the invention solves the problems that a detection reagent in a solution form adopted in the prior art is difficult to store and inconvenient to carry. Compared with a detection reagent in the prior art, the solid detection reagent can be stored for more than one year, and is convenient to carry and accurate and reliable in detection result.

Description

technical field [0001] The invention belongs to the technical field of water quality detection. Specifically, the invention relates to a solid reagent and a detection method for detecting total phosphorus in water. Background technique [0002] Total phosphorus refers to the sum of phosphorus present in inorganic and organic forms in water. The sources of total phosphorus are mainly phosphorus-containing detergents in domestic sewage and human excretion products. Excessive content of phosphorus substances will cause excessive reproduction of baths, reduce the transparency of water quality, and deteriorate water quality. The detection of total phosphorus is indispensable in the fields of agriculture, industry and scientific research. [0003] At present, the analysis and detection method of total phosphorus is mainly the phosphomolybdenum blue colorimetric method. For example, GB11893-89 requires that both ammonium molybdate and reducing agent ascorbic acid should be prepa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/31G01N21/01G01N31/22
CPCG01N21/31G01N21/01G01N31/22
Inventor 徐胜利杨言江王季秋李国忠戚爱芹丁云丽
Owner 辽宁大唐国际阜新煤制天然气有限责任公司
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