Portable mercury sensor for tap water using surface plasmon resonance of immobilized gold nanorods

    Authors

    E. C. Heider; K. Trieu; A. F. T. Moore;A. D. Campiglia

    Comments

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    Abbreviated Journal Title

    Talanta

    Keywords

    Localized surface plasmon resonance; Gold nanoparticles; Mercury; detection; Sensors; COLLOID MONOLAYERS; Chemistry, Analytical

    Abstract

    The surface plasmon resonance of surface immobilized gold nanorods (Au NRs) was used to quantify mercury in tap water. Glass substrates were chemically functionalized with (3-mercaptopropyl) trimethoxysilane, which chemically bound the nanorods to produce a portable and sensitive mercury sensor. The analytical capabilities of the sensor were measured using micromolar mercury concentrations. Since the analytical response was dependent upon number of nanorods present, the limit of detection was 2.28 x 10(-19) M mercury per nanorod. The possibility to using glass substrates with immobilized Au NRs is a significant step towards the analysis of mercury in tap water flows at this low concentration level. (C) 2012 Elsevier B.V. All rights reserved.

    Journal Title

    Talanta

    Volume

    99

    Publication Date

    1-1-2012

    Document Type

    Article

    Language

    English

    First Page

    180

    Last Page

    185

    WOS Identifier

    WOS:000309785300026

    ISSN

    0039-9140

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