高效液相色谱法测定环境水质中草甘膦的方法改进实验研究  

Experimental Study on Improvement of High Performance Liquid Chromatography Method for Determining Glyphosate in Environmental Water Quality

作　　者：易静 李志孟 罗杰鸿 YI Jing;LI Zhimeng;LUO Jiehong(Guangdong Anna Testing Technology Co.,Ltd.,Guangzhou 510000,Guangdong,China;Guangzhou Branch of SGS-CSTC Standard Technical Service Co.,Ltd.,Guangzhou 510000,Guangdong,China)

机构地区：[1]广东安纳检测技术有限公司,广东广州510000 [2]通标标准技术服务有限公司广州分公司,广东广州510000

出　　处：《四川化工》2023年第6期13-15,共3页Sichuan Chemical Industry

摘　　要：《水质草甘膦的测定高效液相色谱法》(HJ 1071—2019)是环境中受污染水质的草甘膦检测的标准方法,但该方法存在一些不足之处。对高效液相色谱法测定环境水质中草甘膦的方法开展改进实验研究。结果表明:改进后的方法检出限为2μg/L、测定下限为8μg/L,检出限和测定下限均符合标准要求;实测样品的加标回收率在94.5%~107%,测定数据的相对标准偏差(RSD)在4.7%~12.8%,符合标准方法回收率在70%~130%以及测定数据相对标准偏差≤20%的要求。The determination of glyphosate in water quality by high-performance liquid chromatography(HJ 1071—2019)is a standard method for detecting glyphosate in contaminated water in the environment,but this method has some shortcomings.An improved experimental study was conducted on the method of determining glyphosate in environmental water quality using high-performance liquid chromatography.The results indicate that the improved method has a detection limit of 2μg/L,lower limit of determination is 8μg/L,both the detection limit and the lower limit of determination meet the standard requirements;The spiked recovery rate of the measured sample is between 94.5%and 107%,and the relative standard deviation(RSD)of the measured data is between 4.7%and 12.8%,which meets the requirements of a standard method recovery rate of 70%to 130%and a relative standard deviation of≤20%for the measured data.

关 键 词：高效液相色谱法 草甘膦 衍生温度 检出限 测定下限 加标回收率 

分 类 号：X832[环境科学与工程—环境工程] O657.72[理学—分析化学]