改良QuEChERS法测定土壤中的毒杀芬残留量  

Detection of Toxaphene in Soil by Modified QuEChERS Technique

作　　者：徐宜宏 黄莹滢[2] 于丽 付海滨[2] 张欣媛[2] 张敏[1] XU Yi-hong;HUANG Ying-ying;YU Li;FU Hai-bin;ZHANG Xin-yuan;ZHANG Min(College of Engineering, Shenyang Agricultural University, Shenyang 110866, China;Shenyang Entry-Exit Inspection and Quarantine Bureau, Shenyang 110016, China)

机构地区：[1]沈阳农业大学工程学院,沈阳110866 [2]沈阳出入境检验检疫局,沈阳110016

出　　处：《农药》2018年第6期435-437,共3页Agrochemicals

基　　金：沈阳市科技计划项目(17-159-8-00);辽宁省大型科学仪器设备共享服务平台能力建设项目(2017-2018年度)

摘　　要：[目的]建立毒杀芬在农田土壤中残留量的气相色谱检测方法。[方法]样品采用正己烷提取后,经PSA和Carb净化,气相色谱电子捕获检测器测定,外标法定量。[结果]方法定量限(S/N=10∶1)为0.01 mg/kg,在0.10～3.0 mg/L的质量浓度范围内,相关系数为0.998,在土壤中添加0.01～0.1 mg/kg范围内(n=6),回收率为75%～92%,相对标准偏差(RSD)为4.1%～5.4%。[结论]该方法适用于土壤中毒杀芬的快速检测。[Aims] A method was developed for the determination of toxaphene residues in soil by capillary gas chromatographic. [Methods] The pesticide was extracted using n-hexane and purified by PSA and Carb, finally detected by GC-electron capture detector, external standard method for quantitative. [Results] The limit of quantitation（S/N=10∶1） was 0.01 mg/kg. In the linear range of 0.10-3.0 mg/L, the correlation coefficient was 0.998. In a range of 0.01-0.1 mg/kg（n=6）, the corresponding recoveries were 75-92%, the relative standard deviations（RSD） were 4.1-5.4%.[Conclusions] The method is suitable for rapid detection of toxaphene residues in soil.

关 键 词：土壤 毒杀芬 气相色谱 农药残留 QuEChERS法 

分 类 号：TQ450.7[化学工程—农药化工]