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Water quality detecting agent for residual chlorine

A detection agent and residual chlorine technology, applied in the field of chemical analysis, can solve the problem of high detection limit, and achieve the effect of easy portability and low price

Inactive Publication Date: 2013-07-17
上海绿帝环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally speaking, the detection limit of chemical analysis method is relatively high, but it is only suitable for the determination of high concentration residual chlorine in water.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Example 1 Preparation of Water Quality Residual Chlorine Detector

[0011] Weigh 1g of N,N-diethyl-p-phenylenediamine and 9g of molten polyethylene glycol 4000 liquid, mix evenly, cool and pulverize to obtain A powder; weigh 1g of disodium edetate and 20g of disodium hydrogen phosphate , 30g of potassium dihydrogen phosphate, and 500g of anhydrous sodium sulfate are mixed, and ground to obtain B powder; 5g of A powder is mixed completely with 120g of B powder to obtain a water quality residual chlorine detection agent.

Embodiment 2

[0012] Example 2 Determination of Residual Chlorine in Tap Water

[0013] Take 10ml of tap water in a 10ml colorimetric tube, add 0.3g of water quality residual chlorine detection reagent, shake the colorimetric tube for 1min to dissolve, measure the absorbance at 515nm with a spectrophotometer, calculate the residual chlorine concentration as 0.28 mg / L, and the national standard method (GB / T 11898-89) The test result was consistent with 0.29 mg / L, indicating that the water quality residual chlorine detector is accurate and reliable.

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PUM

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Abstract

The invention discloses a water quality detecting agent for residual chlorine, which relates to a scene quantitative detection technology for residual chlorine concentration in a water body. The water quality detecting agent is mainly formed by mixing an N,N-diethyl-1,4-phenylenediamine, disodium hydrogen phosphate, monopotassium phosphate, edetic acid disodium and the like. In use, the water quality detecting agent is directly dissolved in a 10-milliliter water sample and then is mixed with the sample for 1-2 minutes to be dissolved, and a spectrophotometer or a liquid chromometer is utilized to measure. The water quality detecting agent provided by the invention is convenient to carry and easy to store, any other reagent is not needed when the detecting agent is in use, the result is exact and reliable, and the water quality detecting agent is suitable for scene quantitative detection on residual chlorine concentration of surface water, life and hospital wastewater, ground water, tap water, drinking water, swimming pool water and the like.

Description

technical field [0001] The invention relates to a method for preparing and using a color developer for detecting residual chlorine in water, and belongs to the technical field of chemical analysis. Background technique [0002] With the rapid development of industrial technology, sudden environmental pollution accidents continue to increase, threatening human health, destroying the ecological environment, and seriously restricting ecological balance and social and economic development. There are many problems to be solved to prevent sudden pollution accidents. The first task is to establish emergency monitoring methods and technologies. Once a pollution accident occurs, it can be quickly put into monitoring, and accurate pollution data can be provided in the shortest time. Measures provide a scientific basis. Therefore, for sudden environmental pollution accidents with strong time and space characteristics and significant random changes, a timely and relatively accurate ans...

Claims

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Application Information

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IPC IPC(8): G01N21/31
Inventor 郜子涵许夏伟郜子蕙
Owner 上海绿帝环保科技有限公司
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