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A rapid preconcentration method using modified GP-MSE for sensitive determination of trace semivolatile organic pollutants in the gas phase of ambient air


Citation

He, Miao and Xu, Qingjuan and Yang, Cui and Piao, Xiangfan and Kannan, Narayanan and Li, Donghao (2014) A rapid preconcentration method using modified GP-MSE for sensitive determination of trace semivolatile organic pollutants in the gas phase of ambient air. Bulletin of the Korean Chemical Society, 35 (10). 2995 - 3000. ISSN 0253-2964; ESSN: 1229-5949

Abstract

A sensitive concentration method utilising modified gas-purge microsyringe extraction (GP-MSE) was developed. Concentration (reduction in volume) to a microlitre volume was achieved. PAHs were utilised as semivolatile analytes to optimise the various parameters that affect the concentration efficiency. The injection rate and temperature were the key factors that affected the concentration efficiency. An efficient concentration (75.0−96.1%) of PAHs was obtained under the optimised conditions. The method exhibited good reproducibility (RSD values that ranged from 1.5 to 9.0%). The GP-MSE concentration method enhances the volume reduction (concentration factor), leading to a low method detection limit (0.5−15 ng L–1). Furthermore, this method offers the advantage of small-volume sampling, enabling even the detection of diurnal hourly changes in the concentration of PAHs in ambient air. Utilising this method in combination with GC−MS, the diurnal hourly flux of PAHs from the gas phase of ambient air was measured. Indeed, the proposed technique is a simple, fast, low-cost and environmentally friendly.


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Additional Metadata

Item Type: Article
Divisions: Faculty of Environmental Studies
DOI Number: https://doi.org/10.5012/bkcs.2014.35.10.2995
Publisher: Korean Chemical Society
Keywords: Gas purge; Microextraction; Concentration; Atmospheric; Trace pollutants
Depositing User: Nabilah Mustapa
Date Deposited: 25 Jun 2015 00:39
Last Modified: 10 Sep 2015 07:01
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.5012/bkcs.2014.35.10.2995
URI: http://psasir.upm.edu.my/id/eprint/36245
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