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首页> 外文期刊>Journal of chromatography, A: Including electrophoresis and other separation methods >Membrane protected micro-solid-phase extraction of organochlorine pesticides in milk samples using zinc oxide incorporated carbon foam as sorbent
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Membrane protected micro-solid-phase extraction of organochlorine pesticides in milk samples using zinc oxide incorporated carbon foam as sorbent

机译：膜保护微固相萃取牛奶样品中的有机氯农药，采用掺有氧化锌的碳泡沫作为吸附剂

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摘要

In this work, zinc oxide nanoparticles incorporated carbon foam was utilized as sorbent for extraction and preconcentration of fifteen organochlorine pesticides in milk samples. The sorbent was prepared by a fast and single step reaction between the sucrose and zinc nitrate that was accomplished by heating the mixture for 10 min. The resulting sorbent was characterized by scanning electron microscopy and X-ray diffraction. The sorbent was then employed in membrane protected micro-solid-phase extraction (mu-SPE) of OCPs in milk samples. This extraction technique is suitable for complex matrices such as milk because it provides effective protection of the sorbent inside the polypropylene membrane. The extracted samples were analyzed by gas chromatography mass spectrometry. The factors that affect the performance of mu-SPE were optimized. This method provided good linear range for all target compounds with coefficient of determinations up to 0.9998. Limits of detection ranged from 0.19 to 1.64 ng mL(-1). This method also provided satisfactory values for intra and inter-day precision with RSDs ranging between 2.3 to 10.2%. (C) 2016 Elsevier B.V. All rights reserved.
机译：在这项工作中，掺入碳泡沫的氧化锌纳米颗粒被用作吸附剂，用于牛奶样品中15种有机氯农药的提取和预浓缩。通过在蔗糖和硝酸锌之间进行快速且一步的反应来制备吸附剂，该反应通过将混合物加热10分钟来完成。通过扫描电子显微镜和X射线衍射表征所得的吸附剂。然后将吸附剂用于牛奶样品中OCP的膜保护微固相萃取（mu-SPE）。这种萃取技术适用于诸如牛奶之类的复杂基质，因为它可以有效保护聚丙烯膜内部的吸附剂。提取的样品通过气相色谱质谱法分析。优化了影响mu-SPE性能的因素。该方法为所有目标化合物提供了良好的线性范围，测定系数高达0.9998。检测限范围从0.19到1.64 ng mL（-1）。该方法还为日内和日间精度提供了令人满意的值，RSD介于2.3％至10.2％之间。 （C）2016 Elsevier B.V.保留所有权利。

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