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
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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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