A highly selective and simple fluorescent sensor for mercury (II) ion detection based on cysteamine-capped CdTe quantum dots synthesized by the reflux method.
作者： Xiaojie Ding , Lingbo Qu , Ran Yang , Yuchen Zhou , Jianjun Li
DOI: 10.1002/BIO.2761
关键词:
摘要: Cysteamine (CA)-capped CdTe quantum dots (QDs) (CA–CdTe QDs) were prepared by the reflux method and utilized as an efficient nano-sized fluorescent sensor to detect mercury (II) ions (Hg2+). Under optimum conditions, fluorescence quenching effect of CA–CdTe QDs was linear at Hg2+ concentrations in range 6.0–450 nmol/L. The detection limit calculated be 4.0 nmol/L according 3σ IUPAC criteria. influence 10-fold Pb2+, Cu2+ Ag+ on determination was < 7% (superior other reports based crude QDs). Furthermore, sensitivity selectivity much improved relative a probe, which using one-pot synthetic method. This system represents new feasibility improve performance changing synthesis Copyright © 2014 John Wiley & Sons, Ltd.
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