QuEChERS-GC/ECD法分析土壤和沉积物中残留有机氯农药和多氯联苯

建立了用快速、简单、廉价、有效、可靠及安全(Qu ECh ERS)的方法净化、GC/ECD法测定沉积物中有机氯农药和多氯联苯的分析方法。目标化合物质量浓度在1.0~100μg/L范围内线性良好,相关系数均0.999,检出限为0.08~0.17μg/L。以沉积物标准样品SRM1944为研究对象,用Qu ECh ERS方法和传统方法进行提取比较,并用沉积物样品进行验证,回收率为87.8%~100.3%。方法快速、简单、可靠、安全。

Analysis of Residual Organochlorine Pesticides and Polychlorobiphenyls in Soils and Sediments by QuEChERS Coupled with GC / ECD

A quick, easy, cheap, effective, rugged and safe ( QuEChERS) clean-up procedure was established to determine or-ganochlorine pesticides and polychlorobiphenyls in soils and sediments by GC/ECD. The results showed that the calibration curves were linear in the ranges of 1. 0~100μg / L for target compounds, with correlation coefficients larger than 0. 999. The limits of de-tection were 0. 08~0. 17 μg/L. The certified reference material of sediment (SRM1944) was chosen as the subject investigated. QuEChERS method was compared with traditional methods, and verified with sediments samples. The recovery ranges were 87. 8%~100. 3%. This method was demonstrated to be quick, easy, rugged and safe.