Detection of Hg2+ using microcantilever sensors

被引：89

作者：

Xu, XH

Thundat, TG ^{[1
]}

Brown, GM

Ji, HF

机构：

[1] Oak Ridge Natl Lab, Div Life Sci, Oak Ridge, TN 37831 USA

[2] Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA

[3] Louisiana Tech Univ, Inst Micromfg, Chem Program, Ruston, LA 71272 USA

来源：

ANALYTICAL CHEMISTRY | 2002年 / 74卷 / 15期

关键词：

D O I：

10.1021/ac0255781

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Trace amounts of Hg2+ are detected by using a microcantilever coated with gold. The microcantilever undergoes bending due to accumulation of Hg2+ on the gold surface. It is found that a concentration of 10(-11) M Hg2+ can be detected using this technology. Other cations, such as K+, Na+ Pb2+, Zn2+, Ni2+, Cd2+, Cu2+, and Ca2+ have little or no effect on the deflection of the cantilever. The selectivity of the Hg2+ sensor could be improved by coating the gold surface of microcantilever with a self-assembled monolayer of a long-chain thiol compound.

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页码：3611 / 3615

页数：5

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