Highly Sensitive, Colorimetric Detection of Mercury(II) in Aqueous Media by Quaternary Ammonium Group-Capped Gold Nanoparticles at Room Temperature

被引：321

作者：

Liu, Dingbin ^{[1
,2
]}

Qu, Weisi ^{[1
,2
]}

Chen, Wenwen ^{[1
,2
]}

Zhang, Wie ^{[1
]}

Wang, Zhuo ^{[1
]}

Jiang, Xingyu ^{[1
]}

机构：

[1] Natl Ctr Nanosci & Technol, CAS Key Lab Biol Effects Nanomat & Nanosafety, Beijing 100190, Peoples R China

[2] Chinese Acad Sci, Grad Sch, Beijing 100080, Peoples R China

来源：

ANALYTICAL CHEMISTRY | 2010年 / 82卷 / 23期

基金：

美国国家科学基金会;

关键词：

SELF-ASSEMBLED MONOLAYERS; WATER-SOLUBLE GOLD; CLUSTER MOLECULES; MERCURIC ION; METAL-IONS; SURFACE; SENSOR; CHEMISTRY; BIOLOGY; ASSAY;

D O I：

10.1021/ac1021503

中图分类号：

O65 [分析化学];

学科分类号：

070302 [分析化学];

摘要：

We provide a highly sensitive and selective assay to detect Hg2+ in aqueous solutions using gold nanoparticles modified with quaternary ammonium group-terminated thiols at room temperature The mechanism is the abstraction of thiols by Hg2+ that led to the aggregation of nanoparticles With the assistance of solar light irradiation, the detection limit can be as low as 30 nM, which satisfies the guideline concentration of He in drinking water set by the WHO In addition, the dynamic range of detection is wide (3 x 10(-8)-1 x 10(-2) M) This range, to our best knowledge, is the widest one that has been reported so far in gold nanoparticle (AuNP) based assays for Hg2+

引用

页码：9606 / 9610

页数：5

共 57 条

[1]

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[2]

[Anonymous], 2008, Guidelines for drinking-water quality, V1

[3]

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