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Open Access NANO EXPRESS

Fluorescent Gold Nanoprobes for the Sensitive and Selective Detection for Hg2+

Fang Chai12, Tingting Wang1, Lu Li1, Haiyan Liu1, Lingyu Zhang1, Zhongmin Su1* and Chungang Wang1*

Author affiliations

1 Institute of Functional Material Chemistry, Faculty of Chemistry, Northeast Normal University, 130024, Changchun, People’s Republic of China

2 College of Chemistry & Chemical Engineering, Harbin Normal University, 150025, Harbin, People’s Republic of China

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Citation and License

Nanoscale Research Letters 2010, 5:1856-1860  doi:10.1007/s11671-010-9730-y

Published: 2 September 2010

Abstract

A simple, cost-effective yet rapid and sensitive sensor for on-site and real-time Hg2+ detection based on bovine serum albumin functionalized fluorescent gold nanoparticles as novel and environmentally friendly fluorescent probes was developed. Using this probe, aqueous Hg2+ can be detected at 0.1 nM in a facile way based on fluorescence quenching. This probe was also applied to determine the Hg2+ in the lake samples, and the results demonstrate low interference and high sensitivity.

Keywords:
Mercury(II) ion; BSA; Gold nanoprobes; Fluorescent; Detection