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首页> 外文期刊>The Journal of Supercritical Fluids >Determination of pesticides in the hair of Vietnamese by means of supercritical CO2 extraction and GC-MS analysis
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Determination of pesticides in the hair of Vietnamese by means of supercritical CO2 extraction and GC-MS analysis

机译：超临界CO2萃取和GC-MS分析法测定越南人头发中的农药

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A supercritical fluid extraction (SFE) and clean-up procedures were established for isolating organochlo-rines (OCPs) and organophosphorus pesticides (OPPs) from the hair of the Vietnamese test subjects. The study of dependence of the yields of pesticides on some parameters of the supercritical fluid CO2 extraction (P, T and r) was carried out Eight OCPs and OPPs were determined by SFE with carbon dioxide only and methanol-modified carbon dioxide extraction at 350 bar, 60min and 45 °C, followed by gas chromatography coupled to mass spectrometry. The results indicated that OCPs can be extracted quantitatively using CO2 only, whereas OPPs require a modifier for extraction. The limit of detection for the 200 mg sample of hair has been found between 0.7 and 1.3 (μgg~(-1), and good linearity (r~2 >0.9861) was achieved within the tested ranges.
机译：建立了一种超临界流体萃取（SFE）和清理程序，用于从越南测试对象的头发中分离出有机氯碱（OCP）和有机磷农药（OPP）。进行了农药产量对超临界流体CO2萃取某些参数（P，T和r）的依赖性的研究，仅用二氧化碳和350 bar的甲醇改性的二氧化碳萃取就通过SFE测定了8种OCP和OPP。 ，60分钟和45°C，然后进行气相色谱-质谱联用。结果表明，仅可使用CO2定量萃取OCP，而OPP需要萃取剂。已发现200 mg头发样品的检出限在0.7至1.3（μgg〜（-1）之间，并且在测试范围内达到了良好的线性度（r〜2> 0.9861）。

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