Determination of an Organophosphorus Pesticide Chlorpyrifos in Seawater by Solid Phase Extraction-Gas Chromatography

• 作者: Ji Tiemei Jiang Min Liu Zhiju Tian Hua Xu Jianping
• 来源期刊: 气象与环境研究：英文版
• 学科: 地球科学
• 关键词: SOLID PHASE EXTRACTION Gas CHROMATOGRAPHY CHLORPYRIFOS Seawater China
• 年，卷（期）: 2016,（6）
• 页码范围: 51-53
• 页数: 3页
• 分类号: P

摘要

Solid phase extraction (SPE) and gas chromatography (GC) were combined to establish a method for detecting traces of chlorpyrifos inseawater, and the effects of extraction column type, water sample pH and salinity, and eluant type on the recovery rate of chlorpyrifos were analyzed.The results show that the linear range of the method was 0.02 -2.0 ug/ml, and the correlation coefficient was 0.999 3 ； the recovery rate of chlorpyrifos in the seawater samples to which the standard sample of chlorpyrifos averaged 101 % -114% ； MDL was 0.008 51 pg/L, and the lower limit of determination for chlorpyrifos was 0.034 ug/ L ； the relative standard deviation ranged from 1.52% to 6.21% (n=6). The method is simple,sensitive and accurate and has good repeatability. It is suitable for the determination of traces of chlorpyrifos in seawater.