PMID- 17961579 OWN - NLM STAT- MEDLINE DCOM- 20080613 LR - 20090115 IS - 0021-9673 (Print) IS - 0021-9673 (Linking) VI - 1186 IP - 1-2 DP - 2008 Apr 4 TI - Application of micro-solid-phase extraction for the determination of persistent organic pollutants in tissue samples. PG - 358-64 AB - A novel, simple and efficient method for determining persistent organic pollutants (POPs) in tissue samples has been developed. This technique involves the use of simultaneous microwave-assisted digestion (MAD) and micro-solid-phase extraction (micro-SPE), in which the sorbent is held within a propylene membrane envelope, with gas chromatographic-mass spectrometric (GC-MS) analysis. The POPs studied included eleven organochlorine pesticides and five polychlorinated biphenyl congeners. Optimization of the MAD-micro-SPE parameters was performed. The relative standard deviations (RSDs) of the method ranged from 0.14 to 12.7%. Correlation coefficients up to 0.9999 were obtained across a concentration range of 1.25-50 ng g(-1). The method detection limits for POPs ranged from 0.002 to 0.009 ng g(-1). A preliminary study applying the MAD-micro-SPE procedure to human ovarian cancer tissue showed that it was capable of detecting the presence of a wide spectrum of different POPs in benign and malignant tumors. FAU - Basheer, Chanbasha AU - Basheer C AD - Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore. FAU - Narasimhan, Kothandaraman AU - Narasimhan K FAU - Yin, Meihui AU - Yin M FAU - Zhao, Changqing AU - Zhao C FAU - Choolani, Mahesh AU - Choolani M FAU - Lee, Hian Kee AU - Lee HK LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20071011 PL - Netherlands TA - J Chromatogr A JT - Journal of chromatography. A JID - 9318488 RN - 0 (Environmental Pollutants) RN - 0 (Organic Chemicals) RN - 0 (Solvents) SB - IM MH - Calibration MH - Environmental Pollutants/*analysis MH - Female MH - Humans MH - Microwaves MH - Organic Chemicals/*analysis MH - Ovarian Neoplasms/*chemistry MH - Ovary/*chemistry MH - Solid Phase Extraction/*methods MH - Solvents MH - Temperature MH - Time Factors EDAT- 2007/10/27 09:00 MHDA- 2008/06/14 09:00 CRDT- 2007/10/27 09:00 PHST- 2007/06/25 00:00 [received] PHST- 2007/10/02 00:00 [revised] PHST- 2007/10/05 00:00 [accepted] PHST- 2007/10/27 09:00 [pubmed] PHST- 2008/06/14 09:00 [medline] PHST- 2007/10/27 09:00 [entrez] AID - S0021-9673(07)01728-1 [pii] AID - 10.1016/j.chroma.2007.10.015 [doi] PST - ppublish SO - J Chromatogr A. 2008 Apr 4;1186(1-2):358-64. doi: 10.1016/j.chroma.2007.10.015. Epub 2007 Oct 11.