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|Title:||Analysis of persistent organic pollutants in marine sediments using a novel microwave assisted solvent extraction and liquid-phase microextraction technique||Authors:||Basheer, C.
|Keywords:||Hollow fibre membrane
Persistent organic pollutants
|Issue Date:||18-Mar-2005||Citation:||Basheer, C., Obbard, J.P., Lee, H.K. (2005-03-18). Analysis of persistent organic pollutants in marine sediments using a novel microwave assisted solvent extraction and liquid-phase microextraction technique. Journal of Chromatography A 1068 (2) : 221-228. ScholarBank@NUS Repository. https://doi.org/10.1016/j.chroma.2005.01.099||Abstract:||A simple and novel analytical method for quantifying persistent organic pollutants (POPs) in marine sediments has been developed using microwave assisted solvent extraction (MASE) and liquid-phase microextraction (LPME) using hollow fibre membrane (HFM). POPs studied included twelve organochlorine pesticides (OCP) and eight polychlorinated biphenyl (PCB) congeners. MASE was used for the extraction of POPs from 1 g of sediment using 10 ml of ultrapure water at 600 W for 20 min at 80°C. The extract was subsequently subjected to a single step LPME-HFM cleanup and enrichment procedure. Recovery varied between 73 and 111% for OCPs; and 86-110% for PCBs, and exceeded levels achieved for conventional multi-step Soxhlet extraction coupled with solid-phase extraction. The method detection limit for each POP analyte ranged from 0.07 to 0.70 ng g-1, and peak areas were proportional to analyte concentrations in the range of 5-500 ng g-1. Relative standard deviations of less than 20% was obtained, based on triplicate sample analysis. The optimized technique was successfully applied to POP analysis of marine sediments collected from the northeastern and southwestern areas of Singapore's coastal environment. © 2005 Elsevier B.V. All rights reserved.||Source Title:||Journal of Chromatography A||URI:||http://scholarbank.nus.edu.sg/handle/10635/88541||ISSN:||00219673||DOI:||10.1016/j.chroma.2005.01.099|
|Appears in Collections:||Staff Publications|
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