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首页> 外文期刊>Environmental Science & Technology >Sampling-Rate Calibration for Rapid and Nonlethal Monitoring of Organic Contaminants in Fish Muscle by Solid-Phase Microextraction
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Sampling-Rate Calibration for Rapid and Nonlethal Monitoring of Organic Contaminants in Fish Muscle by Solid-Phase Microextraction

机译：固相微萃取技术快速，非致命地监测鱼肌肉中有机污染物的采样率校准

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摘要

Solid-phase microextraction (SPME) is a promising technique for determining organic contaminants within biotic systems. Existing in vivo SPME- kinetic calibration (SPME-KC) approaches are unwieldy due to the necessity of predetermining a distribution coefficient for the analyte of interest in the tissue and the preloading of a calibrating compound to the fiber. In this study, a rapid and convenient SPME alternative calibration method for in vivo analysis, termed SPME-sampling rate (SPME-SR) calibration, was developed and validated under both laboratory and field conditions to eliminate such presampling requirements. Briefly, the SPME probe is inserted into tissue, in this study fish dorsal-epaxial muscle, for 20 min allowing the concentrations of target analytes in the fish muscle to be determined by the extracted amount of analyte and the predetermined sampling rates. Atrazine, carbamazepine, and fluoxetine were detected nonlethally in the low ppb levels within fish muscle, with both laboratory and field-derived results obtained by in vivo SPME-KC comparable (within a factor of 1.27) to those obtained by lethal sampling followed by tissue liquid extraction. The technique described in this study represents an important advance which broadens the application of SPME in vivo sampling technology.
机译：固相微萃取（SPME）是一种用于确定生物系统内有机污染物的有前途的技术。由于需要预先确定组织中目标分析物的分配系数以及将校准化合物预加载到纤维上，因此现有的体内SPME动力学校准（SPME-KC）方法难以实现。在这项研究中，开发了一种快速便捷的用于体内分析的SPME替代校准方法，称为SPME采样率（SPME-SR）校准，并在实验室和现场条件下进行了验证，以消除此类预采样要求。简而言之，将SPME探针插入本研究中的鱼的背－轴向肌肉中20分钟，从而可以通过提取的分析物量和预定的采样率确定鱼肌肉中目标分析物的浓度。在鱼肉中以低ppb浓度非致命地检测到了r去津，卡马西平和氟西汀，通过体内SPME-KC获得的实验室和现场结果与通过致死取样然后组织取样所获得的结果相当（在1.27倍之内）液体萃取。这项研究中描述的技术代表了重要的进展，它扩展了SPME体内采样技术的应用。

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  • 来源
    《Environmental Science & Technology》 |2011年第18期|p.7792-7798|共7页
  • 作者

    Gangfeng Ouyang; Ken D. Oakes; Leslie Bragg; Shuang Wang; Hong Liu; Shufen Cui; Mark R Servos; D. George Dixon; Janusz Pawliszyn;

  • 作者单位

    MOE Key Laboratory of Aquatic Product Safety/KLGHEI of Environment and Energy Chemistry, School of Chemistry and Chemical;

    Engineering, Sun Yat-sen University, Guangzhou 510275, P. R. China;

    Engineering, Sun Yat-sen University, Guangzhou 510275, P. R. China;

    Engineering, Sun Yat-sen University, Guangzhou 510275, P. R. China;

    MOE Key Laboratory of Aquatic Product Safety/KLGHEI of Environment and Energy Chemistry, School of Chemistry and Chemical;

    Biology, University of Waterloo, Ontario N2L 3G1, Canada Department of Applied Biological Engineering, Shenzhen Polytechnic, Shenzhen 518055, China;

    Engineering, Sun Yat-sen University, Guangzhou 510275, P. R. China;

    Engineering, Sun Yat-sen University, Guangzhou 510275, P. R. China;

    Biology, University of Waterloo, Ontario N2L 3G1, Canada;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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