15624179

Source:http://linkedlifedata.com/resource/pubmed/id/15624179

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Predicate	Object
rdf:type	pubmed:Citation
lifeskim:mentions	umls-concept:C0036581, umls-concept:C0037802, umls-concept:C0201699, umls-concept:C0936012, umls-concept:C1948027
pubmed:issue	1
pubmed:dateCreated	2005-1-10
pubmed:abstractText	A new method for speciation analysis of two inorganic selenium species was developed by on-line coupling of capillary electrophoresis (CE) with hydride generation-atomic fluorescence spectrometry (HG-AFS) and on-line conversion of Se(VI) to Se(IV). Baseline separation of Se(VI) and Se(IV) was achieved by CE in a 50 cm x 75 microm inside diameter (ID) fused-silica capillary at -20 kV using a mixture of 15 mmol.L(-1) NaH2PO4 and 0.5 mmol.L(-1) cetyltrimethylammonium bromide (pH 7.5) as electrolyte buffer. Se(VI) was on-line reduced to Se(IV) by mixing the CE effluent with concentrated HCl. The precision (relative standard deviation, RSD, n=7) ranged from 0.7 to 1.3% for migration time, 6.4 to 3.7% for peak height response, and 5.9 to 6.1% for peak area for the two selenium species at the 500 microg.L(-1) (as Se) level. The detection limits were 33 and 25 microg.L(-1) (as Se) for Se(VI) and Se(IV), respectively. The recoveries of the two selenium species in five locally collected water samples ranged from 88 to 114%. The developed method was applied to speciation analysis of inorganic selenium species in spiked natural water samples.
pubmed:language	eng
pubmed:journal	http://linkedlifedata.com/resource/pubmed/journal/8204476
pubmed:citationSubset	IM
pubmed:chemical	http://linkedlifedata.com/resource/pubmed/chemical/Selenium Compounds, http://linkedlifedata.com/resource/pubmed/chemical/Water
pubmed:status	MEDLINE
pubmed:month	Jan
pubmed:issn	0173-0835
pubmed:author	pubmed-author:LuCai-YanCY, pubmed-author:YanXiu-PingXP
pubmed:issnType	Print
pubmed:volume	26
pubmed:owner	NLM
pubmed:authorsComplete	Y
pubmed:pagination	155-60
pubmed:dateRevised	2006-11-15
pubmed:meshHeading	pubmed-meshheading:15624179-Electrophoresis, Capillary, pubmed-meshheading:15624179-Online Systems, pubmed-meshheading:15624179-Selenium Compounds, pubmed-meshheading:15624179-Spectrometry, Fluorescence, pubmed-meshheading:15624179-Spectrophotometry, Atomic, pubmed-meshheading:15624179-Water
pubmed:year	2005
pubmed:articleTitle	Capillary electrophoresis on-line coupled with hydride generation-atomic fluorescence spectrometry for speciation analysis of selenium.
pubmed:affiliation	State Key Laboratory of Functional Polymer Materials for Adsorption and Separation, Research Center for Analytical Sciences, Department of Chemistry, Nankai University, Tianjin, China.
pubmed:publicationType	Journal Article, Research Support, Non-U.S. Gov't, Evaluation Studies