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首页> 外文期刊>Food Chemistry >Semi-automated high-throughput method for residual analysis of 302 pesticides and environmental contaminants in catfish by fast low-pressure GC-MS/MS and UHPLC-MS/MS
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Semi-automated high-throughput method for residual analysis of 302 pesticides and environmental contaminants in catfish by fast low-pressure GC-MS/MS and UHPLC-MS/MS

机译：半自动高通量方法通过快速低压GC-MS / MS和UHPLC-MS / MS对analysis鱼中302种农药和环境污染物进行残留分析

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摘要

A fast, fit-for-purpose, high-throughput method was developed and validated for the analysis of 302 targeted contaminants in catfish muscle. Targeted contaminants included pesticides and metabolites with US regulatory levels, plus other lipophilic pesticides and environmental contaminants: PAHs, PCBs, PBDEs and other flame retardants. The sample preparation was based on QuEChERS extraction. The extract was split and analyzed by UHPLC-MS/MS for 128 analytes after filtering and by low pressure (LP) GC-MS/MS for 219 analytes after an automated robotic micro-SPE cleanup. The method was validated at four spiking levels (5, 10, 20 and 40 ng/g) with 10 replicates per level, and satisfactory recoveries (70-120%) and RSDs (<= 20%) were achieved for 80% of the analytes. The method was further validated with NIST SRMs 1946 and 1947 and applied for the analysis of 22 market fish samples. Six pesticides and one PAH were found in the market fish samples, all below US regulatory levels.
机译：开发了一种快速，适合目的的高通量方法，并经过验证可用于分析cat鱼肌肉中的302种目标污染物。目标污染物包括美国监管水平的农药和代谢物，以及其他亲脂性农药和环境污染物：多环芳烃，多氯联苯，多溴二苯醚和其他阻燃剂。样品制备基于QuEChERS提取。分离萃取物，并在过滤后通过UHPLC-MS / MS对128种分析物进行分析，并在自动机械手微型SPE净化后通过低压（LP）GC-MS / MS对219种分析物进行分析。该方法在四种加标浓度（5、10、20和40 ng / g）下均得到验证，每级加样10次，对于80％的加标样品，回收率（70-120％）和RSD（<= 20％）令人满意。分析物。该方法进一步通过NIST SRM 1946和1947进行了验证，并用于分析22种市场鱼类样品。市场鱼样品中发现了六种农药和一种多环芳烃，均低于美国监管水平。

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  • 来源
    《Food Chemistry》 |2020年第jul30期|126592.1-126592.8|共8页
  • 作者

  • 作者单位

    China Agr Univ Coll Sci Beijing 100193 Peoples R China|ARS USDA Eastern Reg Res Ctr 600 East Mermaid Lane Wyndmoor PA 19038 USA;

    ARS USDA Eastern Reg Res Ctr 600 East Mermaid Lane Wyndmoor PA 19038 USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Pesticides; Environmental contaminants; Method validation; Catfish;

    机译：农药;环境污染物;方法验证;鲶鱼;

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