A sensitive localized surface plasmon resonance sensor for determining mercury(II) ion using noble metal nanoparticles as probe

被引：33

作者：

Bi, Ning ^{[1
]}

Chen, Yanhua ^{[1
]}

Qi, Haibo ^{[1
]}

Zheng, Xia ^{[1
]}

Chen, Yang ^{[1
]}

Liao, Xue ^{[1
]}

Zhang, Hanqi ^{[1
]}

Tian, Yuan ^{[1
]}

机构：

[1] Jilin Univ, Coll Chem, Changchun 130012, Peoples R China

来源：

SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2012年 / 95卷

基金：

中国国家自然科学基金;

关键词：

Localized surface plasmon resonance (LSPR); Mercury(II) ion; Noble metal nanoparticles (NPs); ATOMIC FLUORESCENCE SPECTROMETRY; UNMODIFIED GOLD NANOPARTICLES; COLORIMETRIC DETECTION; ABSORPTION SPECTROMETRY; SILVER NANOPARTICLES; DNA; MECHANISM; NANORODS;

D O I：

10.1016/j.saa.2012.04.086

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

The noble metal nanoparticles (NPs), including gold nanorods (AuNRs), gold nanospheres (AuNSs) and silver nanoplates (AgNFTs), were synthesized and Tween 20 stabilized NPs (Tween 20-NPs) were used as the probes for determining Hg2+. Hg2+ was determined based on the strong affinity between Au (Ag) and Hg. Hg2+ was reduced to Hg in the presence of sodium borohydride. Hg interacts with the NPs and the diameter of the NPs decreases with the increase of Hg2+ concentration, which causes the shift in absorption peak of Tween 20-NP5. The peak shifts are linearly related to Hg2+ concentrations. Compared with AuNSs and AgNFTs, when the AuNRs was used, the sensitivity for determining Hg2+ was higher. The developed method shows a good selectivity for Hg2+ and can be applied to the determination of Hg2+ in water samples. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：276 / 281

页数：6

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