Analysis of organochlorine pesticides in surface water of the Songhua River using magnetoliposomes as adsorbents coupled with GC-MS/MS detection

Hui Wang; Bo Qu; He Liu; Jie Ding; Nanqi Ren

doi:10.1016/j.scitotenv.2017.11.046

Analysis of organochlorine pesticides in surface water of the Songhua River using magnetoliposomes as adsorbents coupled with GC-MS/MS detection

Sci Total Environ. 2018 Mar 15:618:70-79. doi: 10.1016/j.scitotenv.2017.11.046. Epub 2017 Nov 8.

Authors

Hui Wang¹, Bo Qu², He Liu³, Jie Ding⁴, Nanqi Ren⁵

Affiliations

¹ State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China.
² Department of Quality, AVIC Aerodynamics Research Institute, Harbin 150009, China.
³ Jilin Province Environmental Monitoring Center, 2063 Tailai Street, Changchun 130011, China.
⁴ State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China. Electronic address: dingjie123@hit.edu.cn.
⁵ State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China. Electronic address: rnq@hit.edu.cn.

PMID: 29126029
DOI: 10.1016/j.scitotenv.2017.11.046

Abstract

A simple and effective method based on magnetic separation has been developed for the extraction of organochlorine pesticides (OCPs) from river water samples using magnetoliposomes as adsorbents. This method avoided the time-consuming column passing process of loading large volume samples in traditional SPE through the rapid isolation of magnetoliposomes with an adscititious magnet. Lipid bilayers formed on the surface of Fe₃O₄ showed great adsorptive tendency towards analytes through hydrophobic interactions, and zwitterions headgroups endowed the outer surface of magnetoliposomes with hydrophilicity to improve the dispersing property of adsorbents in the sample matrix. The target analytes were detected by gas chromatography-tandem mass spectrometry, and the limits of detection obtained are in the range of 0.04-0.35ngL^-1. The relative standard deviations of intra- and inter-day are in the range of 2-5% and 4-7%, respectively. The proposed method was employed for analysis of six OCPs in the surface water samples from two cities along the Songhua River in different seasons. Compared with the traditional methods, the proposed method could reduce the consumption of the organic solvent and shorten the sample preparation time.

Keywords: Gas chromatography-tandem mass spectrometry; Magnetoliposomes; Organochlorine pesticides; Songhua River; Surface water samples.