PMID- 16635492 OWN - NLM STAT- MEDLINE DCOM- 20060824 LR - 20131121 IS - 0021-9673 (Print) IS - 0021-9673 (Linking) VI - 1118 IP - 1 DP - 2006 Jun 16 TI - Selenium speciation by high-performance anion-exchange chromatography-post-column UV irradiation coupled with atomic fluorescence spectrometry. PG - 139-43 AB - A technique for the speciation of selenomethylcysteine (SeMeCys), selenocystine (SeCys), selenite [Se(IV)] and selenomethionine (SeMet) was established in this paper using high-performance anion-exchange chromatography coupled with atomic fluorescence spectrometry (HPAEC-AFS). Analytes were separated on an AminoPac PA10 column and then digested by on-line ultraviolet (UV) irradiation, which destroyed organic compound structure. Hydride generation was used as an available sample introduction technique for atomic fluorescence detection. The detection limits of four compounds were 1-5 microg/L (250 microL injection, 10 times of the baseline noise). The relative standard deviations (RSDs), calculated from seven consecutive injections of 100 microg/L standard mixtures, were from 2 to 4%. Selenious yeast tablet, which had been proposed as selenium supplement, and human urine collected from a volunteer were analyzed. Good spiked recoveries from 86 to 103% were obtained. FAU - Liang, Lina AU - Liang L AD - State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, Beijing 100085, China. FAU - Mo, Shumin AU - Mo S FAU - Zhang, Ping AU - Zhang P FAU - Cai, Yaqi AU - Cai Y FAU - Mou, Shifen AU - Mou S FAU - Jiang, Guibin AU - Jiang G FAU - Wen, Meijuan AU - Wen M LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20060425 PL - Netherlands TA - J Chromatogr A JT - Journal of chromatography. A JID - 9318488 RN - 0 (Ion Exchange Resins) RN - 0 (Organoselenium Compounds) RN - 0 (Tablets) RN - 1464-43-3 (selenocystine) RN - 48TCX9A1VT (Cystine) RN - 55X04QC32I (Sodium Hydroxide) RN - 964MRK2PEL (Selenomethionine) RN - H6241UJ22B (Selenium) RN - HIW548RQ3W (Sodium Selenite) RN - QTT17582CB (Hydrochloric Acid) SB - IM MH - Chromatography, High Pressure Liquid/instrumentation/*methods MH - Cystine/analogs & derivatives/analysis MH - Humans MH - Hydrochloric Acid/chemistry MH - Ion Exchange Resins/chemistry MH - Organoselenium Compounds/analysis/urine MH - Reproducibility of Results MH - Selenium/*analysis/urine MH - Selenomethionine/analysis/urine MH - Sodium Hydroxide/chemistry MH - Sodium Selenite/analysis/urine MH - Spectrometry, Fluorescence/instrumentation/*methods MH - Spectrophotometry, Atomic/instrumentation/*methods MH - Tablets/chemistry MH - Ultraviolet Rays MH - Yeasts/chemistry EDAT- 2006/04/26 09:00 MHDA- 2006/08/25 09:00 CRDT- 2006/04/26 09:00 PHST- 2005/10/26 00:00 [received] PHST- 2006/03/29 00:00 [revised] PHST- 2006/03/29 00:00 [accepted] PHST- 2006/04/26 09:00 [pubmed] PHST- 2006/08/25 09:00 [medline] PHST- 2006/04/26 09:00 [entrez] AID - S0021-9673(06)00737-0 [pii] AID - 10.1016/j.chroma.2006.03.113 [doi] PST - ppublish SO - J Chromatogr A. 2006 Jun 16;1118(1):139-43. doi: 10.1016/j.chroma.2006.03.113. Epub 2006 Apr 25.