title: Development and application of polymer-coated hollow fiber membrane microextraction to the determination of organochlorine pesticides in water.
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.
authors.affiliation: Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore.
authors.forename: Chanbasha
authors.initials: C
authors.lastname: Basheer
authors.forename: Valiyaveettil
authors.initials: V
authors.lastname: Suresh
authors.forename: Ravindranath
authors.initials: R
authors.lastname: Renu
authors.forename: Hian Kee
authors.initials: HK
authors.lastname: Lee
mesh_terms: D006843:Hydrocarbons, Chlorinated; D006863:Hydrogen-Ion Concentration; D007306:Insecticides / Q000032:analysis*; D008567:Membranes, Artificial; D009994:Osmolar Concentration; D011108:Polymers / Q000737:chemistry*; D012680:Sensitivity and Specificity; D014867:Water / Q000737:chemistry*
chemical_list: D006843:Hydrocarbons, Chlorinated; D007306:Insecticides; D008567:Membranes, Artificial; D011108:Polymers; D014867:Water