Application of photochemical reactions of Se in natural waters by hydride generation atomic fluorescence spectrometry
作者： Yu-Wei Chen , Ming-Da Zhou , Jian Tong , Nelson Belzile
DOI: 10.1016/J.ACA.2005.02.079
关键词: Aqueous solution 、 Analytical chemistry 、 Nitric acid 、 Fluorescence spectrometry 、 Hydride 、 Selenium 、 Photochemistry 、 Matrix (chemical analysis) 、 Hydrochloric acid 、 Irradiation 、 Chemistry
摘要: A simple, sensitive and accurate method for selenium speciation in natural waters is proposed. The principle of this based on recently discovered photochemical reactions Se(IV) organic different aqueous solutions. all species was performed with hydride generation–atomic fluorescence spectrometry. Only one pre-reduction step needed procedure, which can greatly reduce the risk contamination, minimize analytical work improve quality speciation. In paper, a comparison made between proposed previous [A.G. Cutter, Anal. Chim. Acta 98 (1978) 59]. protocol, directly measured 3.0 M HCl. + org-Se after UV irradiation (300 nm) 2.5 h 1.0% (v/v) HNO3–2.0% HCl matrix. Total obtained another aliquot sample No pre-concentration, separation or more sophisticated instruments are required. © 2005 Elsevier B.V. All rights reserved.
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