Simultaneous Determination of Ultra-Trace Pesticides and Synthetic Materials in Surface Water by LC-ESI-MS/MS

Journal of the Korean Chemical Society

Ho Sang Shin¹  Young Hwan Cho¹  Soo Hyung Lee¹  Jun Bae Lee¹  Seon Haw Hong¹ 

关键词: Pesticide;    Synthetic material;    Surface water;    Solid phase extraction;    Liquid chromatography-tandem mass spectrometry;   

DOI  :  

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

A liquid chromatography-electrospray ionization-tandem mass spectrometry method (LC-ESI-MS/MS) was used for determining seven pesticides (2,4-dichlorophenoxyacetic acid, methomyl, aldicarb, 2-methyl- 4-chlorophenoxy- acetic acid, molinate, carbaryl and carbofuran) and two synthetic materials (quinoline and bisphenol-A) in surface water. The analytes were extracted using solid-phase extraction (SPE). The eluate was concentrated by nitrogen gas. 100 microliters of 30% (v/v) methanol aqueous solution were used to dissolve the residue and an aliquot of the reconstituted solution was directly injected into LC-ESI-MS/MS after the filtration using 0.2 ¥ìm polytetrafluoroethylene (PTFE) syringe filter. Under the established condition, the calibration curves of the analytes were linear with correlation coefficients of above 0.997. The quantification limit was 0.002~0.011 ¥ìg/L and the relative standard deviations were less than 16.4%. In addition, accuracy was in the range of 84~107% and the recoveries were values between 56.2 and 98.6%. In this study, the developed method was applied to the analysis of real surface water samples.

【 授权许可】

Unknown