色谱

色谱

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环境水样中9种三唑类农药的固相萃取-气相色谱-质谱分析

游明华,孙广大,陈猛,袁东星   

  1. Environmental Science Research Center, Xiamen University, Xiamen 361005, China
  • 收稿日期:2008-04-10 修回日期:2008-07-10 出版日期:2008-11-30 发布日期:1983-06-25
  • 通讯作者: 陈猛
  • 基金资助:
    福建省自然科学基金项目(No. 2006J0140)

Determination of nine triazole pesticides in environmental waters using solid phase extraction and gas chromatography-mass spectrometry

YOU Minghua, SUN Guangda, CHEN Meng, YUAN Dongxing   

  1. Environmental Science Research Center, Xiamen University, Xiamen 361005, China
  • Received:2008-04-10 Revised:2008-07-10 Online:2008-11-30 Published:1983-06-25
  • Contact: CHEN Meng

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摘要： 应用C18柱萃取/富集,NH2柱净化,气相色谱-质谱联用技术检测,建立了环境水样中9种三唑类农药同时分析的方法。9种目标农药在0.025～0.500 mg/L质量浓度范围内线性关系良好,方法的检出限为0.002～0.009 μg/L。以实际水样为基底,加标质量浓度为0.025 μg/L和0.100 μg/L时,9种目标农药的基底加标回收率和相对标准偏差(n=3)分别为68.4%～113.9%,1.6%～6.9%(河水)和70.3%～115.2%,0.8%～8.2%(海水)。该方法操作简单、灵敏度高、选择性好,符合多种农药残留分析的要求,并成功地应用于福建九龙江河口区表层水样中三唑类农药的残留状况调查。

关键词: 固相萃取, 环境水样 , 气相色谱-质谱, 三唑类农药

Abstract: A method was developed for the simultaneous determination of 9 triazole pesticides in environmental water using C18 cartridge for the extraction and enrichment, NH2 cartridge for the clean-up and gas chromatography-mass spectrometry for the detection. The linear range of calibration curves for the 9 target pesticides was between 0.025 mg/L and 0.500 mg/L. The detection limits were in the range of 0.002-0.009 μg/L. The 9 target pesticides were measured in river water and sea water at 0.025 μg/L and 0.100 μg/L spiking levels, recoveries and relative standard deviations (RSD, n=3) were 68.4%-113.9% and 1.6%-6.9% for river water and 70.3%-115.2% and 0.8%-8.2% for sea water, respectively. The method is simple, sensitive, selective and suitable for the qualification of pesticide multiresidue analysis. It has been successfully applied to the survey of 9 triazole pesticide residues in Jiulong River Estuary, Fujian.

Key words: environment waters , solid phase extraction (SPE), triazole pesticides, gas chromatography-mass spectrometry (GC-MS)