title: Glutathione-capped Mn-doped ZnS quantum dots as a room-temperature phosphorescence sensor for the detection of Pb(2+) ions.
abstract: The room-temperature phosphorescence (RTP) of glutathione-capped Mn-doped ZnS quantum dots (GSH-Mn-ZnS QDs) was effectively quenched by the addition of Pb(2+). A simple and sensitive RTP sensor for Pb(2+) detection based on the quenching effect was developed. Under the optimal conditions, good linear correlations were obtained for Pb(2+) over a concentration range from 1.0 to 100μg·L(-1), and the detection limit was 0.45μg·L(-1). The established method has been successfully applied for the determination of Pb(2+) in real water samples without complicated sample pretreatment with the recoveries in the range of 95.4%-104.0%.
authors.affiliation: Department of Chemistry, College of Chemistry and Chemical Engineering, Key Laboratory of Spectrochemical Analysis & Instrumentation, Ministry of Education, Xiamen University, Xiamen 361005, China.
authors.forename: Jialing
authors.initials: J
authors.lastname: Chen
authors.affiliation: Department of Chemistry, College of Chemistry and Chemical Engineering, Key Laboratory of Spectrochemical Analysis & Instrumentation, Ministry of Education, Xiamen University, Xiamen 361005, China.
authors.forename: Yaxian
authors.initials: Y
authors.lastname: Zhu
authors.affiliation: State Key Laboratory of Marine Environmental Science of China (Xiamen University), College of Environment and Ecology, Xiamen University, Xiamen 361102, China; Zhangzhou Institute of Technology, Zhangzhou 363000, China. Electronic address: yzhang@xmu.edu.cn.
authors.forename: Yong
authors.initials: Y
authors.lastname: Zhang
keywords: Glutathione-capped Mn-doped ZnS quantum dots (GSH-Mn-ZnS QDs); Pb(2+); Room-temperature phosphorescence