A highly selective colorimetric sulfide assay based on the inhibition of the peroxidase-like activity of copper nanoclusters

被引：44

作者：

Liao, Hong ^{[1
]}

Hu, Lianzhe ^{[1
]}

Zhang, Yuzhen ^{[1
]}

Yu, Xianrong ^{[1
]}

Liu, Yilin ^{[1
]}

Li, Rong ^{[1
]}

机构：

[1] Chongqing Normal Univ, Coll Chem, Chongqing Key Lab Green Synth & Applicat, Chongqing 401331, Peoples R China

来源：

MICROCHIMICA ACTA | 2018年 / 185卷 / 02期

基金：

中国国家自然科学基金;

关键词：

Anion detection; Nanozymes; Glutathione; Metal nanocluster; Enzyme mimicking; Fluorescence; HYDROGEN-SULFIDE; SENSOR; PROBE; NANOMATERIALS; NANOZYMES; IONS;

D O I：

10.1007/s00604-018-2701-1

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The authors report that sulfide ions are capable of inhibiting the peroxidase-like activity of copper nanoclusters (CuNCs). The catalytic activity of CuNCs toward the oxidation of the chromogenic substrate 3,3',5,5'-tetramethylbenzidine by H2O2 is remarkably decreased in the presence of sulfide. Based on this finding, a colorimetric assay was developed for the rapid determination of sulfide. Best operated at a wavelength of 652 nm, it has a 0.5 mu M detection limit. The method is highly selective and has been successfully applied to the quantification of sulfide in environmental water samples.

引用

页数：6

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