Detection of HG2+ using microcantilever sensors

Xiaohe Xu; Thomas G. Thundat; Gilbert M. Brown; Hai Feng Ji

doi:10.1021/ac0255781

Detection of HG²⁺ using microcantilever sensors

Xiaohe Xu
, Thomas G. Thundat
, Gilbert M. Brown
, Hai Feng Ji

Department of Chemical and Biological Engineering

Louisiana Tech University
Oak Ridge National Laboratory

Research output: Contribution to journal › Article › peer-review

106 Scopus citations

Abstract

Trace amounts of Hg²⁺ are detected by using a microcan. tilever 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.

Original language	English
Pages (from-to)	3611-3615
Number of pages	5
Journal	Analytical Chemistry
Volume	74
Issue number	15
DOIs	https://doi.org/10.1021/ac0255781
State	Published - Aug 1 2002

Access to Document

10.1021/ac0255781

Cite this

@article{23adfad4453a4ed4b62ba663360777ab,

title = "Detection of HG2+ using microcantilever sensors",

abstract = "Trace amounts of Hg2+ are detected by using a microcan. tilever 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.",

author = "Xiaohe Xu and Thundat, \{Thomas G.\} and Brown, \{Gilbert M.\} and Ji, \{Hai Feng\}",

year = "2002",

month = aug,

day = "1",

doi = "10.1021/ac0255781",

language = "English",

volume = "74",

pages = "3611--3615",

journal = "Analytical Chemistry",

issn = "0003-2700",

publisher = "American Chemical Society",

number = "15",

}

TY - JOUR

T1 - Detection of HG2+ using microcantilever sensors

AU - Xu, Xiaohe

AU - Thundat, Thomas G.

AU - Brown, Gilbert M.

AU - Ji, Hai Feng

PY - 2002/8/1

Y1 - 2002/8/1

N2 - Trace amounts of Hg2+ are detected by using a microcan. tilever 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.

AB - Trace amounts of Hg2+ are detected by using a microcan. tilever 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.

UR - https://www.scopus.com/pages/publications/0036683477

U2 - 10.1021/ac0255781

DO - 10.1021/ac0255781

M3 - Article

C2 - 12175144

AN - SCOPUS:0036683477

SN - 0003-2700

VL - 74

SP - 3611

EP - 3615

JO - Analytical Chemistry

JF - Analytical Chemistry

IS - 15

ER -

Detection of HG²⁺ using microcantilever sensors

Abstract

Access to Document

Other files and links

Fingerprint

Cite this