Detection of polycyclic aromatic hydrocarbons using quartz crystal microbalances

Simon Stanley; Carl Percival; Manfred Auer; Alan Braithwaite; Michael Newton; Glen McHale; Wayne Hayes

doi:10.1021/ac0257546

Detection of polycyclic aromatic hydrocarbons using quartz crystal microbalances

Simon Stanley, Carl Percival, Manfred Auer, Alan Braithwaite, Michael Newton, Glen McHale, Wayne Hayes

EE Faculty Management and Administration

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

51 Citations (Scopus)

Abstract

A chemically coated piezoelectric sensor has been developed for the determination of PAHs in the liquid phase. An organic monolayer attached to the surface of a gold electrode of a quartz crystal microbalance (QCM) via a covalent thiol-gold link complete with an ionically bound recognition element has been produced. This study has employed the PAH derivative 9-anthracene carboxylic acid which, once bound to the alkane thiol, functions as the recognition element. Binding of anthracene via pi-pi interaction has been observed as a frequency shift in the QCM with a detectability of the target analyte of 2 ppb and a response range of 0-50 ppb. The relative response of the sensor altered for different PAHs despite pi-pi interaction being the sole communication between recognition element and analyte. It is envisaged that such a sensor could be employed in the identification of key marker compounds and, as such, give an indication of total PAH flux in the environment.

Original language	English
Pages (from-to)	1573-1577
Journal	Analytical Chemistry
Volume	75
Issue number	7
DOIs	https://doi.org/10.1021/ac0257546
Publication status	Published - 1 Apr 2003

Keywords

molecularly imprinted polymers
sensor
quartz
microbalance

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10.1021/ac0257546

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title = "Detection of polycyclic aromatic hydrocarbons using quartz crystal microbalances",

abstract = "A chemically coated piezoelectric sensor has been developed for the determination of PAHs in the liquid phase. An organic monolayer attached to the surface of a gold electrode of a quartz crystal microbalance (QCM) via a covalent thiol-gold link complete with an ionically bound recognition element has been produced. This study has employed the PAH derivative 9-anthracene carboxylic acid which, once bound to the alkane thiol, functions as the recognition element. Binding of anthracene via pi-pi interaction has been observed as a frequency shift in the QCM with a detectability of the target analyte of 2 ppb and a response range of 0-50 ppb. The relative response of the sensor altered for different PAHs despite pi-pi interaction being the sole communication between recognition element and analyte. It is envisaged that such a sensor could be employed in the identification of key marker compounds and, as such, give an indication of total PAH flux in the environment.",

keywords = "molecularly imprinted polymers, sensor, quartz, microbalance",

author = "Simon Stanley and Carl Percival and Manfred Auer and Alan Braithwaite and Michael Newton and Glen McHale and Wayne Hayes",

year = "2003",

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day = "1",

doi = "10.1021/ac0257546",

language = "English",

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journal = "Analytical Chemistry",

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TY - JOUR

T1 - Detection of polycyclic aromatic hydrocarbons using quartz crystal microbalances

AU - Stanley, Simon

AU - Percival, Carl

AU - Auer, Manfred

AU - Braithwaite, Alan

AU - Newton, Michael

AU - McHale, Glen

AU - Hayes, Wayne

PY - 2003/4/1

Y1 - 2003/4/1

N2 - A chemically coated piezoelectric sensor has been developed for the determination of PAHs in the liquid phase. An organic monolayer attached to the surface of a gold electrode of a quartz crystal microbalance (QCM) via a covalent thiol-gold link complete with an ionically bound recognition element has been produced. This study has employed the PAH derivative 9-anthracene carboxylic acid which, once bound to the alkane thiol, functions as the recognition element. Binding of anthracene via pi-pi interaction has been observed as a frequency shift in the QCM with a detectability of the target analyte of 2 ppb and a response range of 0-50 ppb. The relative response of the sensor altered for different PAHs despite pi-pi interaction being the sole communication between recognition element and analyte. It is envisaged that such a sensor could be employed in the identification of key marker compounds and, as such, give an indication of total PAH flux in the environment.

AB - A chemically coated piezoelectric sensor has been developed for the determination of PAHs in the liquid phase. An organic monolayer attached to the surface of a gold electrode of a quartz crystal microbalance (QCM) via a covalent thiol-gold link complete with an ionically bound recognition element has been produced. This study has employed the PAH derivative 9-anthracene carboxylic acid which, once bound to the alkane thiol, functions as the recognition element. Binding of anthracene via pi-pi interaction has been observed as a frequency shift in the QCM with a detectability of the target analyte of 2 ppb and a response range of 0-50 ppb. The relative response of the sensor altered for different PAHs despite pi-pi interaction being the sole communication between recognition element and analyte. It is envisaged that such a sensor could be employed in the identification of key marker compounds and, as such, give an indication of total PAH flux in the environment.

KW - molecularly imprinted polymers

KW - sensor

KW - quartz

KW - microbalance

U2 - 10.1021/ac0257546

DO - 10.1021/ac0257546

M3 - Article

SN - 0003-2700

VL - 75

SP - 1573

EP - 1577

JO - Analytical Chemistry

JF - Analytical Chemistry

IS - 7

ER -

Detection of polycyclic aromatic hydrocarbons using quartz crystal microbalances

Abstract

Keywords

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