Magnetic stir bars with hyperbranched aptamer as coating for selective, effective headspace extraction of trace polychlorinated biphenyls in soils.

Jin Zeng,Qiqin Wang, Jianan Gao,Wenhai Wang,Haoyu Shen,Yuting Cao,Meiqin Hu,Wenchao Bi,Ning Gan

Journal of Chromatography A（2020）

引用 22|浏览8

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摘要

•A hyperbranched aptamer coating was constructed on a magnetic stir bar with ease.•The bioactive coating shows high adsorption capacity and specificity towards PCBs.•The stir bar was used to headspace extract and detect ng•g−1 of PCBs in soils.•The assay is facile, green and effective to detect trace PCBs in complex samples.

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关键词

Headspace sorptive extraction,Magnetic stir bar,Hyperbranched aptamer,Polychlorinated biphenyls,Soils

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