Fiber optic based evanescent wave sensor for the detection of elemental mercury utilizing gold nanorods

被引：22

作者：

Crosby, Jeffrey S. ^{[1
]}

Lucas, Donald ^{[2
]}

Koshland, Catherine P. ^{[3
]}

机构：

[1] Univ Calif Berkeley, Dept Mech Engn, Berkeley, CA 94720 USA

[2] LBNL, Environm Energy Technol Div, Berkeley, CA 94720 USA

[3] Univ Calif Berkeley, Sch Publ Hlth, Berkeley, CA 94720 USA

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2013年 / 181卷

关键词：

Mercury sensor; Optical sensor; Gold nanoparticles; Fiber optic sensor; Plasmonics; SURFACE-PLASMON-RESONANCE; NANOPARTICLES; ABSORPTION; SPECTROSCOPY; ADSORPTION; SIMULATION; PARTICLES; BIOSENSOR; VAPOR; PROBE;

D O I：

10.1016/j.snb.2013.02.037

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

We developed a fiber optic based sensor using gold nanorods as the sensing medium for the detection of atmospheric elemental mercury. Mercury readily adsorbs on the nanoparticles causing a measurable shift in the longitudinal localized surface plasmon resonance. Depositing the nanorods on the surface of a bare, bent fiber optic cable provides a means to excite the resonance and determine the absorbance through the evanescent wave at the surface. The response of the system is linear with concentration, and we have been able to directly measure concentrations down to 1.0 mu g/m(3). (c) 2013 Elsevier B.V. All rights reserved.

引用

页码：938 / 942

页数：5

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