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首页> 外文期刊>Journal of environmental science and health >Application of a novel cold activated carbon fiber-solid phase microextraction for analysis of organochlorine pesticides in soil
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Application of a novel cold activated carbon fiber-solid phase microextraction for analysis of organochlorine pesticides in soil

机译：新型冷活性炭纤维固相微萃取在土壤有机氯农药分析中的应用

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摘要

A novel and simple analytical procedure using cold activated carbon fiber-solid phase microextraction (CACF-SPME) was applied to determine organochlorine pesticides (OCs) in soil samples. The pesticides in this study consist of α-, β-, γ-, and δ-hexachlorocyclohexane (HCH). By heating the sample while cooling the fiber, the developed method not only provides better performance in terms of sensitivity, linearity and recovery but also offers shorter adsorption procedure than that of traditional headspace-solid phase microextraction (HS-SPME). The experimental conditions such as the amount of water, adsorption time and adsorption temperature were optimized. Matrix effects were investigated with different types of soils. We concluded that using the standard addition method was required for quantification purposes. The limits of detection obtained using the proposed method range from 0.01 to 0.05 ng/g, and the recoveries for CACF-SPME are in the range of 80.01% to 89.68% with relative standard deviation (RSDs) better than 8.60%. The proposed method was further applied to determine OCs in real agricultural soil. The results are in good agreement with those obtained using traditional ultrasonic extraction. The research demonstrates the suitability of the CACF-SPME for the analysis of OCs in soil.
机译：采用冷活性碳纤维固相微萃取（CACF-SPME）的一种新颖而简单的分析程序，用于测定土壤样品中的有机氯农药（OCs）。本研究中的农药由α-，β-，γ-和δ-六氯环己烷（HCH）组成。通过在冷却纤维的同时加热样品，与传统的顶空-固相微萃取（HS-SPME）方法相比，所开发的方法不仅在灵敏度，线性和回收率方面提供了更好的性能，而且还提供了更短的吸附过程。优化了水量，吸附时间和吸附温度等实验条件。研究了不同类型土壤的基质效应。我们得出结论，需要使用标准添加方法进行定量。使用所提出的方法获得的检出限为0.01至0.05 ng / g，CACF-SPME的回收率在80.01％至89.68％的范围内，相对标准偏差（RSD）优于8.60％。将该方法进一步应用于实际农业土壤中OCs的测定。结果与使用传统超声提取获得的结果非常吻合。研究表明，CACF-SPME适用于分析土壤中的OCs。

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