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Portable micro-solid phase extraction for the determination of polycyclic aromatic hydrocarbons in water samples

Zainal Abidin, Nurul Nabilah and Sanagi, Mohd. Marsin and Wan Ibrahim, Wan Aini and Endud, Salasiah and Md. Shukri, Dyia Syaleyana (2014) Portable micro-solid phase extraction for the determination of polycyclic aromatic hydrocarbons in water samples. Analytical Methods, 6 (15). pp. 5512-5518. ISSN 1759-9660

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Official URL: http://dx.doi.org/10.1039/c4ay00474d

Abstract

This work describes for the first time the application of portable micro-solid phase extraction (μ-SPE) for the determination of polycyclic aromatic hydrocarbons (PAHs). In this technique, a battery-operated electric whisk stirrer combined with a μ-SPE device was employed to provide agitation of the sample solution and facilitate the pre-concentration of the target analytes. The μ-SPE device consisted of multi-walled carbon nanotubes (MWCNTs) packed in a polypropylene (PP) membrane. The performance of μ-SPE sampling coupled with high performance liquid chromatography-ultraviolet detection (HPLC-UV) was evaluated for the analysis of five target PAHs (fluorene, anthracene, fluoranthene, pyrene and benzo[a]pyrene) in water. Important μ-SPE parameters were studied and the optimal extraction conditions were 30 min extraction time, 10 min desorption time, isopropanol as the conditioning and desorption solvent and no addition of a salt. The developed portable μ-SPE method provided good linearity in the concentration range of 0.1-100 μg L-1 for fluorene, anthracene, fluoranthene and pyrene, and 1-100 μg L-1 for benzo[a]pyrene, with good coefficients of determination (r2, 0.9975-0.9989), low limits of detection (0.01-0.59 μg L-1), acceptable intra-day precisions (3.5-6.2% for on-site analysis) and acceptable relative recoveries (77.3-107.2%). Portable μ-SPE combined with HPLC-UV was successfully applied to the determination of target PAHs in selected water samples. The proposed sample preparation technique proved to be simple, cost effective, easy-to-operate and feasible for both off-site and on-site analyses.

Item Type:Article
Uncontrolled Keywords:desorption, extraction
Subjects:Q Science
Divisions:Science
ID Code:54528
Deposited By: Haliza Zainal
Deposited On:05 Apr 2016 15:00
Last Modified:26 Jul 2017 12:31

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