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A rapid and sensitive colorimetric sensor for hypochlorite detection based on polyvinylpyrrolidone-stabilized gold nanoparticles
Ye, Yingjie1; Zhang, Qian1; Zhang, Yongxing2; Li, Yue1; Gao, Fengxian1; Ma, Dong2; Lu, Shun3
2023-10-19
摘要It is important to develop simple and effective approaches for hypochlorite (OCl-) detection at trace levels due to its widespread use as a disinfectant especially for water treatments including drinking water. In this work, a simple, facile colorimetric sensor for the sensitive determination of hypochlorite was developed based on the oxidation of cysteine by OCl-, a process that prohibits the cysteine-triggered aggregation of Au nanoparticles (AuNPs) stabilized by polyvinylpyrrolidone. With this strategy, the concentration of OCl- could be detected with the naked eye and/or ultraviolet-visible spectroscopy, and the limit of detection for OCl- was 1.0 mu M and 250 nM, respectively. Additionally, the proposed method shows excellent anti-interference capability against many other interfering ions and real water sample applicability. Schematic representation of the colorimetric detection of OCl- using AuNPs.
DOI10.1039/d3ay01400b
发表期刊ANALYTICAL METHODS
ISSN1759-9660
卷号15期号:40页码:5323-5328
通讯作者Zhang, Yongxing(zyx07157@mail.ustc.edu.cn) ; Lu, Shun(lushun@cigit.ac.cn)
收录类别SCI
WOS记录号WOS:001082461600001
语种英语