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Reagent for quickly determining copper concentration in water and use method thereof

A technology of copper concentration and reagents, applied in the direction of using chemical indicators to analyze, test water, material inspection products, etc., to achieve the effect of easy transportation and carrying, accurate results and low price

Active Publication Date: 2011-08-31
GUANGDONG HUANKAI MICROBIAL SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Copper is a widely distributed trace element, but when the copper content in water is greater than 0.01mg / L, it has a significant inhibitory effect on the self-purification of water

Method used

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  • Reagent for quickly determining copper concentration in water and use method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1. Prepare 16.95g of anhydrous disodium hydrogen phosphate, 16.5g of anhydrous sodium dihydrogen phosphate, 50g of hydroxylamine hydrochloride, 1.2g of BCA, and 15.35g of anhydrous sodium sulfate. Add the above raw materials into a glass mortar and grind until all raw materials are fully ground It can pass through the 80-mesh standard sieve, and then pack it into 0.2g per package, and become a rapid determination reagent for copper concentration in water;

[0026] 2. Add the rapid determination reagent for copper concentration in water to the water sample to be tested, and after standing for 2 minutes, compare the color with the standard color card or color disc to read the copper concentration.

Embodiment 2

[0028] 1. Prepare 5g of anhydrous disodium hydrogen phosphate, 33g of anhydrous sodium dihydrogen phosphate, 25g of hydroxylamine hydrochloride, 1g of BCA, and 38g of anhydrous sodium sulfate. Add the above raw materials into a glass mortar and grind them until all raw materials can pass the 80-mesh standard Sieve, and then sub-package into 0.2g per package to become a rapid determination reagent for copper concentration in water;

[0029] 2. Add the copper concentration rapid determination reagent in water to the water sample to be tested, and after standing for 2 minutes, read the copper concentration with the standard color card or color disc or color comparison.

Embodiment 3

[0031] 1. Prepare 27.5g of anhydrous disodium hydrogen phosphate, 2g of anhydrous sodium dihydrogen phosphate, 50g of hydroxylamine hydrochloride, 2g of BCA, and 18.5g of anhydrous sodium sulfate. Mesh standard sieve, then divided into 0.2g per package, and become a rapid determination reagent for copper concentration in water;

[0032] 2. Add the copper concentration rapid determination reagent in water to the water sample to be tested, and after standing for 2 minutes, read the copper concentration with the standard color card or color disc or color comparison.

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Abstract

The invention discloses a reagent for quickly determining copper concentration in water and a use method thereof, which relate to the reagent for determining copper concentration in water and a use method of the reagent. The reagent for quickly determining copper concentration in water comprises the following components in percentage by mass: 3 to 27.5 percent of anhydrous sodium hydrogen phosphate, 2 to 33 percent of anhydrous sodium dihydrogen phosphate, 25 to 50 percent of hydroxylamine hydrochloride, 1 to 2 percent of 2,2'- biquinoline -4,4'- dicarboxylic acid disodium salt, and 18.5 to 38 percent of anhydrous sodium sulphate. The use method of the reagent for quickly determining the copper concentration in water comprises the following steps: adding the reagent for quickly determining the copper concentration in water into a water sample to be tested, staying still for 2min, comparing the color with a standard colorimetric card or a colorimetric disc, and reading the copper concentration. The invention has the advantages of convenient operation, accurate results, low prices, convenient transportation and carrying, applicability of on-site determination and the like.

Description

【Technical field】 [0001] The invention relates to a reagent for measuring the concentration of copper ions in water and a method for using the reagent. 【Background technique】 [0002] Copper is a widely distributed trace element, but when the copper content in water is greater than 0.01mg / L, it has a significant inhibitory effect on the self-purification of water. Copper is very toxic to aquatic organisms, and it is generally believed that water containing copper greater than 0.01mg / L is unsafe for fish. The toxicity of copper to aquatic organisms is related to its form in water, and the toxicity of free copper ions is much greater than that of complexed copper. The critical harmful concentration of copper sulfate in irrigation water to rice is 0.6mg / L. Worldwide, the average copper content in fresh water is 3 μg / L, and the average copper content in seawater is 0.25 μg / L. The main sources of copper pollution are copper-containing wastewater discharged from electroplating,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N31/22G01N33/18
Inventor 邓金花傅妍芳廖富迎吴清平
Owner GUANGDONG HUANKAI MICROBIAL SCI & TECH
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