Development and application of polymer-coated hollow fiber membrane microextraction to the determination of organochlorine pesticides in water |
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Authors: | Basheer Chanbasha Suresh Valiyaveettil Renu Ravindranath Lee Hian Kee |
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Institution: | Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore. |
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Abstract: | A novel extraction procedure coupled with gas chromatography-mass spectrometric detection for quantification of organochlorine pesticides (OCPs) in water is described. Amphiphilic polyhydroxylated polyparaphenylene (PH-PPP) was synthesized and coated on the surfaces of a porous polypropylene hollow fiber membrane (HFM). Due to the high porosity of the HFM, maximum active surface area to achieve high extraction efficiency is expected. The polymer-coated HFM was used for the extraction of 15 OCPs from water. The extraction efficiency was compared with emerging and established methods such as liquid-phase microextraction (LPME), solid-phase microextraction (SPME) and stir bar sorptive extraction (SBSE) techniques. We term the current procedure as polymer-coated hollow fiber microextraction (PC-HFME). PC-HFME showed good selectivity and sensitivity. Detection limits for OCPs were in the range of 0.001-0.008 microg l(-1). The sensitivity and selectivity of the coated HFM could be adjusted by changing the characteristics of the coated PH-PPP film. |
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Keywords: | Water analysis Hollow fiber membrane Extraction methods Pesticides Organochlorine compounds |
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