水质化学需氧量测定全程质量控制

Quality Control of the Whole Process of the Chemical Oxygen Demand Determination of Water Quality

在开展环境监测工作中,质量控制是必要手段,通过质量控制可提升环境监测数据的可靠性与准确性。目前,水质化学需氧量测定采用的方法有很多种,如重铬酸盐法、高锰酸钾法以及分光光度法等。首先对各种测定方法进行简要介绍,然后结合四川省某县域内河流的水质情况,选择适当的测定方法对该河流的水质化学需氧量进行测定,并制定测定全程质量控制方法,从而为水质化学需氧量测定的质量和效果提供保障。

In the development of environmental monitoring,quality control is a necessary means,and the reliability and accuracy of environmental monitoring data can be improved through quality control.At present,there are many methods used for the determination of the chemical oxygen demand of water quality,such as dichromate titration,permanganate titration and spectrophotometry.This paper first briefly introduces various determination methods,then,combined with the water quality of a river in a county in Sichuan Province,selects appropriate determination methods to determine the chemical oxygen demand of water quality in the river,and formulates the quality control method of the whole process of determination,so as to ensure the quality and effect of the chemical oxygen demand determination of water quality.