共 49 条
"Turn-On" Chemiluminescence Sensor for the Highly Selective and Ultrasensitive Detection of Hg2+ Ions Based on Interstrand Cooperative Coordination and Catalytic Formation of Gold Nanoparticles
被引:89
作者:

Cai, Sheng
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机构:
Fudan Univ, Sch Pharm, Shanghai 201203, Peoples R China Fudan Univ, Sch Pharm, Shanghai 201203, Peoples R China

Lao, Kameng
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h-index: 0
机构:
Fudan Univ, Sch Pharm, Shanghai 201203, Peoples R China Fudan Univ, Sch Pharm, Shanghai 201203, Peoples R China

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Lu, Jianzhong
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机构:
Fudan Univ, Sch Pharm, Shanghai 201203, Peoples R China Fudan Univ, Sch Pharm, Shanghai 201203, Peoples R China
机构:
[1] Fudan Univ, Sch Pharm, Shanghai 201203, Peoples R China
基金:
中国国家自然科学基金;
关键词:
CRITICAL MICELLE CONCENTRATION;
COLORIMETRIC DETECTION;
MERCURY;
FLUORESCENT;
CHEMODOSIMETER;
SURFACTANTS;
CHEMOSENSOR;
DESIGN;
WATER;
AG+;
D O I:
10.1021/ac202789q
中图分类号:
O65 [分析化学];
学科分类号:
070302 ;
081704 ;
摘要:
Monitoring the levels of potentially toxic metal ions such as Hg2+ in aquatic ecosystems is important because this ion can have severe effects on human health and the environment. Thus, a novel chemiluminescence (CL) sensor is developed for the highly selective and ultrasensitive detection of Hg2+ ions in aqueous solution, based on thymine-Hg2+-thymine (T-Hg2+-T) coordination chemistry and subsequent formation of gold nanoparticles (Au NPs) in a HAuCl4/NH2OH reaction. The thus-formed Au NPs trigger the reaction between luminol and AgNO3, producing CL emission. This novel CL technique has several advantages including high sensitivity (0.01 ppb) and selectivity over a spectrum of interfering metal ions. In view of these advantages, as well as the cost-effective, minimized working steps and portable features of the CL techniques, we expect that this CL sensor will be a promising candidate for the field detection of toxic Hg2+ ions in environment, water, and food samples.
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页码:9702 / 9708
页数:7
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