Polymeric ionic liquid based fused silica fiber by chemical binding for headspace solid-phase microextraction of organophosphate esters in water samples. Issue 11 (2nd September 2017)

• Record Type: Journal Article
• Authors: Pang, Long; Yang, Peijie; Pang, Rong; Yuan, Yiting; Ge, Liming; Zhang, Hongzhong
• Is Part Of: International journal of environmental analytical chemistry. Volume 97:Issue 11(2017)
• Page Start: 1094
• Page End: 1106
• Publication Date: 2017-09-02
• Subjects: Organophosphate esters -- polymeric ionic liquid -- headspace solid-phase microextraction -- chemical binding; Ecology -- Periodicals; Chemistry, Analytic -- Periodicals; Environmental chemistry -- Periodicals; Pollution -- Periodicals; 577.14
• DOI: 10.1080/03067319.2017.1381955
• Languages: English
• ISSNs: 0306-7319

Abstract

ABSTRACT: In this paper, a convenient method was developed for preparing polymeric ionic liquid based fiber coating onto a fused silica fiber by using covalent bonding for headspace solid-phase microextraction of five organophosphorus esters from real water samples. 1-vinyl-3-(3-triethoxysilylpropyl)-4, 5-dihydroimidazolium chloride was anchored on the silica layer by covalent bonding and then the polymeric ionic liquid layer was formed via free radical copolymerization with vinyl-substituted imidazolium in the presence of azobisisobutyronitrile as initiator. The limits of detection ranged from 0.68 to 100 ng L −1 . The intra- and inter-day precisions, evaluated by relative standard deviation, were in the range of 4–8% and 1–10%, respectively. The recoveries of spiked real water samples were in the range of 73–110% and 77–118%, respectively, at two different concentration levels.