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Preparation and application methods for detection agent for detecting zinc content in water

A technology of zinc content and detection reagents, which is applied in the direction of material analysis by observing the influence of chemical indicators, and analysis by making materials undergo chemical reactions. And other problems, to achieve the effect of low price, easy to carry, stable performance

Inactive Publication Date: 2014-04-09
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Although the above-mentioned traditional laboratory methods can accurately quantify pollutants and have high precision and sensitivity, they need to collect a large number of samples, equip professionals and expensive instruments and equipment, and the operation is complicated and time-consuming. On-site water quality testing for sudden environmental pollution accidents
At present, no report on zinc on-site rapid detection reagents has been found

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment 1, the preparation of zinc content detection agent in water

[0020] Take concentrated sulfuric acid according to the quantity by mass: anhydrous sodium sulfate: potassium pyrophosphate: sodium thiosulfate: thiourea=10:35:14:14:105, mix evenly to obtain powder Ⅰ; take dithizone according to the quantity by mass : polyethylene glycol 6000: thiourea: anhydrous sodium acetate: cetyltrimethylammonium bromide = 1: 10: 1000: 500: 500, mix well to obtain powder II.

Embodiment 2

[0021] Embodiment 2, certain tap water zinc ion concentration determination

[0022] Take 5ml of a certain tap water in a 5ml colorimetric tube, add the zinc detection agent prepared in Example 1 into the colorimetric tube, first add 0.25g of powder I, shake the test tube to fully dissolve the solvent, then add 0.1g of powder II, again fully After shaking and dissolving for 10 minutes, use a spectrophotometer (PORS-15V portable spectrometer Beijing Puyi Company) to measure the absorbance of the red solution at a wavelength of 525nm. The result of thizone spectrophotometry is 0.594mg / L, which shows that the determination of zinc ion concentration in tap water is accurate and reliable.

Embodiment 3

[0023] Embodiment 3, certain lake water zinc concentration determination

[0024] Take 5ml of certain lake water in a 5ml colorimetric tube, add the zinc detection agent prepared in Example 1 into the colorimetric tube, first add 0.25g of powder I, shake the test tube to fully dissolve the solvent, then add 0.1g of powder II, and again fully After shaking and dissolving for 10 minutes, use a spectrophotometer (PORS-15V portable spectrometer Beijing Puyi Company) to measure the absorbance of the red solution at a wavelength of 525nm. The result of dithizone spectrophotometry is 0.068 mg / L, which shows that the detection agent is accurate and reliable in determining the concentration of zinc ions in lake water.

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PUM

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Abstract

The invention relates to preparation and application methods for a detection agent for detecting zinc content in water. Concentrated sulfuric acid, anhydrous sodium sulfate, potassium pyrophosphate, sodium hyposulfite and thiourea in a weight ratio of 10:35:14:14:105 are weighed and mixed uniformly, and powder I is obtained. Then dithizone, polyethylene glycol 6000, thiourea, sodium acetate and cetyl trimethyl ammonium bromide in a weight ratio of 1:10:1000:500:500 are weighed and mixed uniformly, and powder II is obtained. When in use, the powder I and the powder II are directly added into 5ml of a water sample in order, mixed and dissolved fully. After 10min, the solution is measured by utilization of a spectrophotometer. The preparation method for the detection agent is simple. The detection agent is easy to carry, and easy to safekeep. Detection results are accurate and reliable. The detection agent is suitable for on-site quantitative detection of zinc in water such as underground water, surface water, drinking water, industrial wastewater and the like.

Description

technical field [0001] The invention relates to a method for preparing and using a detection agent for detecting zinc content in water, and belongs to the technical field of environmental monitoring. Background technique [0002] In recent years, in rural areas of our country, with the rapid development of township enterprises, the discharge of "three industrial wastes" has been increasing year by year, and the long-standing agricultural, livestock and poultry breeding, aquaculture and domestic sewage and wastewater pollution have made rural water The environmental situation is not optimistic, and environmental pollution incidents occur frequently, which has threatened the safety of drinking water in rural areas and the quality of agricultural irrigation water. At the same time, due to the lack of attention paid by relevant departments to the problem of rural environmental pollution, the monitoring and prevention of rural environmental pollution faces various problems such a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/78
Inventor 陈玲范亚郜洪文袁园
Owner TONGJI UNIV
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