PMID- 24140697 OWN - NLM STAT- MEDLINE DCOM- 20140813 LR - 20140109 IS - 1879-1026 (Electronic) IS - 0048-9697 (Linking) VI - 470-471 DP - 2014 Feb 1 TI - Application of fully automatic hollow fiber liquid phase microextraction to assess the distribution of organophosphate esters in the Pearl River Estuaries. PG - 263-9 LID - S0048-9697(13)01107-8 [pii] LID - 10.1016/j.scitotenv.2013.09.069 [doi] AB - Organophosphate esters (OPEs) are widespread organic pollutants that could be detected in various environmental matrices. In this study, a sample pretreatment method was developed for the determination of 9 OPEs by automatic hollow fiber-liquid phase microextraction (HF-LPME) coupled with gas chromatography-mass spectrometry (GC-MS). High sensitivity of OPEs could be achieved after optimization of several important parameters with the limits of detection (LODs) ranging from 2.6 to 120 ng L(-1) for different individual OPEs, and the relative standard deviations (RSDs) ranged from 2.1% to 10.4%. Acceptable recoveries were observed and the proposed method was then successfully applied to determine OPEs in seawaters collected from 23 sampling sites of the Pearl River Estuaries in dry and wet seasons, respectively. All of the OPEs could be detected, except tris(2-ethylhexyl) phosphate (TEHP). The total concentrations of 9 OPEs in seawaters were ranging from 2.04 (Hemen) to 3.12 (Humen) mug L(-1) in the dry season and from 1.08 (Hemen) to 2.50 (Jitimen) mugL(-1) in the wet season. By using spatial interpolation method of ordinary kriging, the most polluted area of SigmaOPEs was found in Humen in the dry season, while it was Jitimen in the wet season. Moreover, the annual input of SigmaOPEs discharged via eight estuaries ranged from 384 tons (Jitimen) to 1,225 tons (Modaomen), and the total annual input was 5,694 tons. CI - (c) 2013 Elsevier B.V. All rights reserved. FAU - Wang, Xiaowei AU - Wang X AD - MOE Key Laboratory of Aquatic Product Safety, School of Marine Sciences, Sun Yat-sen University, Guangzhou 510275, PR China. FAU - He, Yingqian AU - He Y AD - School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, PR China. FAU - Lin, Li AU - Lin L AD - School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, PR China. FAU - Zeng, Feng AU - Zeng F AD - School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou 510275, PR China. FAU - Luan, Tiangang AU - Luan T AD - MOE Key Laboratory of Aquatic Product Safety, School of Marine Sciences, Sun Yat-sen University, Guangzhou 510275, PR China; School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, PR China. Electronic address: cesltg@mail.sysu.edu.cn. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20131018 PL - Netherlands TA - Sci Total Environ JT - The Science of the total environment JID - 0330500 RN - 0 (Esters) RN - 0 (Organophosphates) RN - 0 (Water Pollutants, Chemical) SB - IM MH - China MH - Environmental Monitoring/*methods MH - Esters/*analysis MH - Estuaries MH - Liquid Phase Microextraction MH - Organophosphates/*analysis MH - Rivers/*chemistry MH - Water Pollutants, Chemical/*analysis OTO - NOTNLM OT - Contaminant monitoring OT - Hollow fiber OT - Liquid phase microextraction OT - Organophosphate esters OT - Pearl River Estuaries EDAT- 2013/10/22 06:00 MHDA- 2014/08/15 06:00 CRDT- 2013/10/22 06:00 PHST- 2013/07/17 00:00 [received] PHST- 2013/09/21 00:00 [revised] PHST- 2013/09/23 00:00 [accepted] PHST- 2013/10/22 06:00 [entrez] PHST- 2013/10/22 06:00 [pubmed] PHST- 2014/08/15 06:00 [medline] AID - S0048-9697(13)01107-8 [pii] AID - 10.1016/j.scitotenv.2013.09.069 [doi] PST - ppublish SO - Sci Total Environ. 2014 Feb 1;470-471:263-9. doi: 10.1016/j.scitotenv.2013.09.069. Epub 2013 Oct 18.