PMID- 22138227 OWN - NLM STAT- MEDLINE DCOM- 20120222 LR - 20151119 IS - 1873-3778 (Electronic) IS - 0021-9673 (Linking) VI - 1219 DP - 2012 Jan 6 TI - Monolithic molecular imprinted polymer fiber for recognition and solid phase microextraction of ephedrine and pseudoephedrine in biological samples prior to capillary electrophoresis analysis. PG - 195-200 LID - 10.1016/j.chroma.2011.11.016 [doi] AB - A novel capillary electrophoresis (CE) method coupled with monolithic molecular imprinted polymer (MIP) fiber based solid phase microextraction (SPME) was developed for selective and sensitive determination of ephedrine (E) and pseudoephedrine (PE). With in situ polymerization in a silica capillary mold and E as template, the MIP fibers could be produced in batch reproducibly and each fiber was available for 50 extraction cycles without significant decrease in extraction ability. Using the MIP fiber under optimized extraction conditions, CE detection limits of E and PE were greatly lowered from 0.20 to 0.00096 mug/mL and 0.12 to 0.0011 mug/mL, respectively. Analysis of urine and serum samples by the MIP-SPME-CE method was also performed, with results indicating that E and PE could be selectively extracted. The recoveries and relative standard deviations (RSDs) for sample analysis were found in the range of 91-104% and 3.8-9.1%, respectively. CI - Copyright (c) 2011 Elsevier B.V. All rights reserved. FAU - Deng, Dong-Li AU - Deng DL AD - Analytical & Testing Center, Sichuan University, Chengdu, China. FAU - Zhang, Ji-You AU - Zhang JY FAU - Chen, Chen AU - Chen C FAU - Hou, Xiao-Ling AU - Hou XL FAU - Su, Ying-Ying AU - Su YY FAU - Wu, Lan AU - Wu L LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20111115 PL - Netherlands TA - J Chromatogr A JT - Journal of chromatography. A JID - 9318488 RN - 451W47IQ8X (Sodium Chloride) RN - 7CUC9DDI9F (Pseudoephedrine) RN - GN83C131XS (Ephedrine) RN - Q40Q9N063P (Acetic Acid) RN - Y4S76JWI15 (Methanol) SB - IM MH - Acetic Acid MH - Electrophoresis, Capillary/*methods MH - Ephedrine/blood/*isolation & purification/urine MH - Humans MH - Limit of Detection MH - Methanol MH - Molecular Imprinting/*methods MH - Pseudoephedrine/blood/*isolation & purification/urine MH - Reproducibility of Results MH - Sodium Chloride MH - Solid Phase Microextraction/instrumentation/*methods MH - Time Factors EDAT- 2011/12/06 06:00 MHDA- 2012/02/23 06:00 CRDT- 2011/12/06 06:00 PHST- 2011/08/04 00:00 [received] PHST- 2011/11/01 00:00 [revised] PHST- 2011/11/08 00:00 [accepted] PHST- 2011/12/06 06:00 [entrez] PHST- 2011/12/06 06:00 [pubmed] PHST- 2012/02/23 06:00 [medline] AID - S0021-9673(11)01683-9 [pii] AID - 10.1016/j.chroma.2011.11.016 [doi] PST - ppublish SO - J Chromatogr A. 2012 Jan 6;1219:195-200. doi: 10.1016/j.chroma.2011.11.016. Epub 2011 Nov 15.