全自动高锰酸盐指数分析仪在高浊度环境水样分析中的应用  

Application of Permanganate Index Analyzer for the Environmental Water with High Turbidity

作　　者：帅俊松 龚娴 SHUAI Junsong;GONG Xian(Jiangxi Province Ecological Environmental Monitoring Centre of Nanchang,Nanchang 330038,China)

机构地区：[1]江西省南昌生态环境监测中心,南昌330038

出　　处：《能源研究与管理》2024年第3期117-121,127,共6页Energy Research and Management

摘　　要：为了提高高浊度环境水样中高锰酸盐指数测定的效率,并保证分析结果的准确度,采用全自动高锰酸盐指数分析仪测定高浊度环境水样高锰酸盐指数。重点考察了该分析仪对高浊度环境水样高锰酸盐指数测定的适用性,并与手工法进行了比较。结果表明:根据高锰酸盐指数有证标准物质的测定结果,使用全自动高锰酸盐指数分析仪进行分析,测量偏差小,准确度良好。根据不同浊度水样对于高锰酸盐指数测定结果,测定值随着水样浊度的增加而明显变大,但全自动法比手工法更接近于真值。当仪器应用于高浊度环境水样(>100 NTU)高锰酸盐指数测定时,重复性测试相对标准偏差(RSD)在3.31%~5.26%之间;采用手工法分析相同样品,RSD在10.02%~13.42%之间。与手工法相比,基于全自动高锰酸盐指数分析仪的分析技术对高浊度水样高锰酸盐指数分析具有更好的准确度与重复性。本方法兼具分析效率高、操作简单等诸多优点,可以在环境监测高浊度水样高锰酸盐指数分析领域广泛应用。In order to improve the efficiency of measuring the permanganate index in high turbidity environmental water samples and ensure the accuracy of the analysis results,a fully automatic permanganate index analyzer is used to measure the permanganate index of high turbidity environmental water samples.The applicability of the analyzer for determining the permanganate index of water samples in high turbidity environments was emphasized,and compared with manual methods.The results indicate that,based on the measurement results of certified reference materials for potassium permanganate index,using a fully automatic potassium permanganate index analyzer for analysis results in small measurement deviation and good accuracy.According to the measurement results of permanganate index for different turbidity water samples,the measured value increases significantly with the increase of water turbidity,but the instrument measurement method is closer to the true value than the manual method.When the instrument is applied to the determination of permanganate index in high turbidity environmental water samples(>100 NTU),the relative standard deviation(RSD)of repeatability testing is between 3.31% and 5.26%. The same sample was analyzed manually, with RSD ranging from 10.02% to 13.42%. Compared with manual methods, the analysis technology based on fully automatic permanganate index analyzer has better accuracy and repeatability in analyzing permanganate index of high turbidity water samples. This method has many advantages such as high analysis efficiency and simple operation, and can be widely used in the field of permanganate index analysis of high turbidity water samples in environmental monitoring.

关 键 词：全自动高锰酸盐指数分析仪 高浊度 环境水样 高锰酸盐指数 

分 类 号：X832[环境科学与工程—环境工程]