title: Graphene-dispersive solid-phase extraction of phthalate acid esters from environmental water.
abstract: Graphene is a novel carbon nanomaterial with an ultra-high specific surface area. In this paper, we explored graphene as adsorbent for efficient enrichment of 15 phthalate acid esters (PAEs) under different water matrixes (ultrapure water, river and sea). A simple and inexpensive method of dispersive solid-phase extraction (DSPE) combined with gas chromatography-mass spectrometry (GC-MS) was used and acceptable results were provided for most PAEs with overall average recoveries between 71 and 117%. The extraction conditions such as the amount of graphene, the desorption solvent, adsorption time, desorption time and the solution pH were optimized. Finally, the method was applied for the determination of PAEs in environmental water samples including 9 rivers and 2 seas from 7 areas in China.
authors.affiliation: College of Science, China Agricultural University, Beijing 100193, PR China.
authors.forename: Xiaoli
authors.initials: X
authors.lastname: Wu
authors.forename: Huijie
authors.initials: H
authors.lastname: Hong
authors.forename: Xiaotong
authors.initials: X
authors.lastname: Liu
authors.forename: Wenbi
authors.initials: W
authors.lastname: Guan
authors.forename: Lixuan
authors.initials: L
authors.lastname: Meng
authors.forename: Yong
authors.initials: Y
authors.lastname: Ye
authors.forename: Yongqiang
authors.initials: Y
authors.lastname: Ma
mesh_terms: D000327:Adsorption; D002681:China; D004952:Esters / Q000737:chemistry*; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods; D006108:Graphite; D010795:Phthalic Acids / Q000737:chemistry*; D052616:Solid Phase Extraction / Q000379:methods*; D014874:Water Pollutants, Chemical / Q000032:analysis* / Q000737:chemistry*
chemical_list: D004952:Esters; D010795:Phthalic Acids; D014874:Water Pollutants, Chemical; D006108:Graphite