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Conductive polyaniline-graphene oxide sorbent for electrochemically assisted solid-phase extraction of lead ions in aqueous food samples
Wang, Jing; Zhu, Wenxin; Zhang, Tianshu; Zhang, Liang; Du, Ting; Zhang, Wentao; Zhang, Daohong; Sun, Jing; Yue, Tianli; Wang, Yi-Cheng; Wang, Jianlong
2020
发表期刊ANALYTICA CHIMICA ACTA
卷号1100
摘要This work describes an electrochemical-assisted desorption method that has been developed for solid-phase extraction of metal ions (Pb2+), based on a well-ordered conducting sorbent: an array-like polyaniline nanofiber synthesized on the surface of graphene oxide (PANI-GO). Combining the advantages of the allowable mechanical deformation of GO with the reduced ionic-diffusion path of vertical PANI nanofibers, this method's synergistic effect lends the prepared sorbent an enhanced stability and high analyte-desorption effectiveness. In terms of the adsorption and electrochemical-assisted desorption behavior of PANI-GO, the paper reports that the adsorption/desorption process is accompanied by the changes of the as-prepared sorbent in cyclic voltammetry, and that the prepared PANI-GO exhibits good anti-interference properties across various interference ions. Given optimal pH values, the limit of detection of the proposed method is 0.04 mg L-1; the repeatability relative standard deviation (RSD) and reproducibility RSD are 1.97% and 2.51%, respectively; and the method shows good recovery capability in the case of real beverage samples spiked with Pb2+. (C) 2019 Elsevier B.V. All rights reserved.
关键词Polyaniline Graphene oxide Electrochemically assisted Solid phase extraction Food safety
文献类型期刊论文
条目标识符http://210.75.249.4/handle/363003/60401
专题中国科学院西北高原生物研究所
推荐引用方式
GB/T 7714
Wang, Jing,Zhu, Wenxin,Zhang, Tianshu,et al. Conductive polyaniline-graphene oxide sorbent for electrochemically assisted solid-phase extraction of lead ions in aqueous food samples[J]. ANALYTICA CHIMICA ACTA,2020,1100.
APA Wang, Jing.,Zhu, Wenxin.,Zhang, Tianshu.,Zhang, Liang.,Du, Ting.,...&Wang, Jianlong.(2020).Conductive polyaniline-graphene oxide sorbent for electrochemically assisted solid-phase extraction of lead ions in aqueous food samples.ANALYTICA CHIMICA ACTA,1100.
MLA Wang, Jing,et al."Conductive polyaniline-graphene oxide sorbent for electrochemically assisted solid-phase extraction of lead ions in aqueous food samples".ANALYTICA CHIMICA ACTA 1100(2020).
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