实验用水对高锰酸盐指数准确度的影响

The Influence of Experimental Water Upon the Accuracy of the Permanganate Index

高锰酸盐指数是水质监测的主要项目之一,它是地表水和地下水受还原性无机物和有机物污染的重要衡量尺度。简单介绍了高锰酸盐指数测定中对实验用水的要求及实验用水的处理方法,通过对七个标准样品的实验测定及讨论,得出实验用水对高锰酸盐指数的测定是不可忽视的,尤其对标准样品影响最为严重,它带来的不仅仅是误差的问题,而是会导致错误的结果。因此在高锰酸盐指数的测定分析中,一定要严格控制实验用水使其符合要求,以提高测定的准确度和精密度。

Permanganate index is one of key items of water quality monitoring, It is a measure important scale of surface water and groundwater polluted from reducing property inorganic substance and organic substance. Requirement and processing method of the experimental water used in the process of Permanganate Index measurement are introduced briefly in this paper. Experimental wa- ter is influential to measure the Permanganate Index through analyzing the measurement resuh of standard sample. The influence to the standard sample is very serious, and brings not merely the errors, but causes the wrong result. Therefore, experimental water should be strictly required to meet the need in order to improve the precision and accuracy of permanganate index determination.