PMID- 25680551 OWN - NLM STAT- MEDLINE DCOM- 20150625 LR - 20181202 IS - 1873-3778 (Electronic) IS - 0021-9673 (Linking) VI - 1385 DP - 2015 Mar 13 TI - Monitoring of selected estrogen mimics in complicated samples using polymeric ionic liquid-based multiple monolithic fiber solid-phase microextraction combined with high-performance liquid chromatography. PG - 12-9 LID - S0021-9673(15)00168-5 [pii] LID - 10.1016/j.chroma.2015.01.072 [doi] AB - A convenient, rapid, sensitive and environmentally friendly method for simultaneous monitoring of six estrogen mimics (bisphenol A, diethylstilbestrol, dienestrol, hexestrol, octylphenol and nonylphenol) in water and milk samples was developed by coupling multiple monolithic fiber solid-phase microextraction (MMF-SPME) to high performance liquid chromatography with diode array detection. The MMF-SPME based on polymeric ionic liquid-based monolith as extractive medium was used to concentrate target analytes. Because there were multiple interactions between adsorbent and analytes, the MMF-SPME exhibited a high extractive capability toward analytes. To obtain optimum extraction performance, several extraction parameters including desorption solvent, pH value and ionic strength in sample matrix, extraction and desorption time were investigated and discussed. Under the optimized extraction conditions, the limits of detection (S/N=3) of the proposed method were 0.040-0.11 mug/L in water and in milk samples. Satisfactory linearity was achieved for analytes with the correlation coefficients (r) above 0.99. Excellent method reproducibility was achieved by evaluating the repeatability, intermediate precision and MMF-to-MMF reproducibility with relative standard deviations (RSDs) of both less than 10%. Finally, the proposed method was successfully applied to the determination of estrogen mimics in several milk and environmental water samples. Recoveries obtained for the determination of six target analytes in spiking samples ranged from 75.6% to 118%, with RSD below 10% in all cases. CI - Copyright (c) 2015 Elsevier B.V. All rights reserved. FAU - Mei, Meng AU - Mei M AD - State Key Laboratory of Marine Environmental Science, Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystem, College of the Environment and Ecology, Xiamen University, Xiamen 361005, China. FAU - Yu, Jie AU - Yu J AD - State Key Laboratory of Marine Environmental Science, Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystem, College of the Environment and Ecology, Xiamen University, Xiamen 361005, China. FAU - Huang, Xiaojia AU - Huang X AD - State Key Laboratory of Marine Environmental Science, Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystem, College of the Environment and Ecology, Xiamen University, Xiamen 361005, China. Electronic address: hxj@xmu.edu.cn. FAU - Li, Haonan AU - Li H AD - State Key Laboratory of Marine Environmental Science, Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystem, College of the Environment and Ecology, Xiamen University, Xiamen 361005, China. FAU - Lin, Lan AU - Lin L AD - State Key Laboratory of Marine Environmental Science, Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystem, College of the Environment and Ecology, Xiamen University, Xiamen 361005, China. FAU - Yuan, Dongxing AU - Yuan D AD - State Key Laboratory of Marine Environmental Science, Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystem, College of the Environment and Ecology, Xiamen University, Xiamen 361005, China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20150202 PL - Netherlands TA - J Chromatogr A JT - Journal of chromatography. A JID - 9318488 RN - 0 (Benzhydryl Compounds) RN - 0 (Estrogens) RN - 0 (Ionic Liquids) RN - 0 (Phenols) RN - 0 (octylphenol) RN - 059QF0KO0R (Water) RN - 79F6A2ILP5 (nonylphenol) RN - MLT3645I99 (bisphenol A) SB - IM MH - Animals MH - Benzhydryl Compounds/analysis MH - *Chromatography, High Pressure Liquid MH - Environmental Monitoring/*methods MH - Estrogens/*analysis MH - Ionic Liquids/chemistry MH - Limit of Detection MH - Milk/chemistry MH - Phenols/analysis MH - Reproducibility of Results MH - *Solid Phase Microextraction MH - Water/chemistry OTO - NOTNLM OT - Environmental water OT - Estrogen mimics OT - Milk OT - Monolithic fiber solid-phase microextraction (MMF-SPME) OT - Polymeric ionic liquid EDAT- 2015/02/15 06:00 MHDA- 2015/06/26 06:00 CRDT- 2015/02/15 06:00 PHST- 2014/12/04 00:00 [received] PHST- 2015/01/22 00:00 [revised] PHST- 2015/01/23 00:00 [accepted] PHST- 2015/02/15 06:00 [entrez] PHST- 2015/02/15 06:00 [pubmed] PHST- 2015/06/26 06:00 [medline] AID - S0021-9673(15)00168-5 [pii] AID - 10.1016/j.chroma.2015.01.072 [doi] PST - ppublish SO - J Chromatogr A. 2015 Mar 13;1385:12-9. doi: 10.1016/j.chroma.2015.01.072. Epub 2015 Feb 2.