Bi-component detecting agent for measuring phosphorus content

A detection agent and two-component technology, applied in the field of analysis and detection, can solve the problems of inconvenient portability, poor stability of liquid reagents, and inability to meet the rapid determination of phosphorus content, etc., to achieve convenient storage and portability, easy operation and use, and sensitive determination Effect

Inactive Publication Date: 2019-05-31
闫宏涛
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method needs to add a certain concentration of liquid acid and liquid reagent prepared in advance for the determination of phosphorus content, which is inconvenient to carry and use.
In particular, liquid reagents (such as ascorbic acid, etc.) have poor stability and are temporarily prepared when they need to be measured, which cannot meet the needs of rapid determination of phosphorus content.

Method used

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  • Bi-component detecting agent for measuring phosphorus content

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Example 1: Preparation of a two-component detection agent for determining phosphorus content

[0019] (1). Mix 0.25g ascorbic acid, 0.25g thiourea and 1.5g sucrose evenly to obtain a mixed reducing agent;

[0020] (2). Mix 0.15g EDTA-2Na and 6g sodium sulfate uniformly to obtain a complexing stabilizer;

[0021] (3). Add 60ml of 80% sulfuric acid to 10g of silica gel, stir for 3h, filter, and dry at 110°C to obtain solid acid;

[0022] (4). 1g ammonium molybdate, 0.15g antimony potassium tartrate, 4g sulfamic acid and 8g solid acid are mixed uniformly to obtain detection agent component A;

[0023] (5). 2g mixed reducing agent, 1g tartaric acid, 5g complexation stabilizer and 0.02g polyvinyl alcohol were mixed uniformly to obtain component B of the detection agent.

Embodiment 2

[0024] Example 2: Preparation of a two-component detection agent for determining phosphorus content

[0025] (1). Mix 0.5g ascorbic acid, 0.5g thiourea and 3g sucrose evenly to obtain a mixed reducing agent;

[0026] (2). Mix 0.2g EDTA-2Na and 8g sodium sulfate uniformly to obtain a complexing stabilizer;

[0027] (3). Add 90ml of 80% sulfuric acid to 15g of silica gel, stir for 3h, filter, and dry at 110°C to obtain solid acid;

[0028] (4). Mix 2 ammonium molybdate, 0.3g antimony potassium tartrate, 7g sulfamic acid and 14g solid acid to obtain the detection agent component A;

[0029] (5). 3g mixed reducing agent, 1.5g tartaric acid, 7.5g complexation stabilizer and 0.03g polyvinyl alcohol were mixed uniformly to obtain component B of the detection agent.

Embodiment 3

[0030] Embodiment 3: the preparation of a kind of two-component detection agent of phosphorus content

[0031] (1). Mix 0.5g ascorbic acid, 0.5g thiourea and 3g sucrose evenly to obtain a mixed reducing agent;

[0032] (2). Mix 0.25g EDTA-2Na and 10g sodium sulfate uniformly to obtain a complexing stabilizer;

[0033] (3). Add 120ml of 80% sulfuric acid to 20g of silica gel, stir for 3h, filter, and dry at 110°C to obtain solid acid;

[0034] (4). 3g ammonium molybdate, 0.45g antimony potassium tartrate, 10g sulfamic acid and 20g solid acid are mixed uniformly to obtain detection agent component A;

[0035] (5). Mix 4g of mixed reducing agent, 2g of tartaric acid, 10g of complexing stabilizer and 0.04g of polyvinyl alcohol, and grind them into powder to obtain component B of the detection agent.

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Abstract

The invention relates to a bi-component detecting agent for measuring phosphorus content and belongs to the technical field of analytical detection. The bi-component detecting agent for measuring phosphorus content of the invention is a solid bi-component agent and comprises a detection agent component A and a detection agent component B. The bi-component detecting agent has the advantages of simple preparation, stable performance, sensitive and rapid measurement, easiness in storage, portability, convenience in operation and use and the like. With the bi-component detecting agent adopted, theproblems and difficulties of instability of and inconvenience in carrying liquid reagents for measurement can be eliminated. The bi-component detecting agent is suitable for rapid measurement of phosphorus content. The bi-component detecting agent can be operated and used by non-professionals. When the bi-component detecting agent is used, the component A and the component B of the bi-component detecting agent for measuring the phosphorus content are separately added to a sample solution to be tested, so that the phosphorus content can be directly measured by a spectrophotometer or a visual colorimetric method.

Description

technical field [0001] The invention relates to a two-component detection agent for determining phosphorus content, belonging to the technical field of analysis and detection. Background technique [0002] Phosphorus is an essential nutrient element for the growth and development of organisms. It is not only a component of many important organic compounds in plants, participates in various metabolic physiological processes in plants, but also is a limiting nutrient element for the growth of planktonic algae in water bodies, and its content is closely related to the occurrence of eutrophication in water bodies. Therefore, the determination of phosphorus content has very important significance and application value for water resources, soil, aquaculture, etc. [0003] The determination methods of phosphorus content mainly include gravimetric method, volumetric method and spectrophotometric method. The gravimetric determination of phosphorus is cumbersome and lengthy, and it ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/31
Inventor 闫宏涛
Owner 闫宏涛
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