Hydride generation atomic fluorescence spectrometric determination of ultratraces of selenium and tellurium in cow milk

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• 作者：Cava-Montesinos ; Patricia ; Cervera ; M. Luisa ; Pastor ; Agustin ; de la Guardia ; Miguel
• 关键词：Milk analysis ; Selenium determination ; Tellurium determination ; Hydride generation atomic fluorescence ; Microwave-assisted digestion
• 刊名：Analytica Chimica Acta
• 出版年：2003
• 出版时间：April 3, 2003
• 年：2003
• 卷：481
• 期：2
• 页码：291-300
• 全文大小：158 K

文摘

A sensitive procedure has been developed for selenium and tellurium determination in milk by hydride generation atomic fluorescence spectrometry (HG-AFS) after microwave-assisted sample digestion. The method provides sensitivity values of 1591 and 997 fluorescence unitsng⁻¹ml⁻¹ with detection limits of 0.005 and 0.015ngml⁻¹ for Se and Te, respectively. The application of the developed methodology to the analysis of cow milk samples of the Spanish market evidenced the presence of concentration ranges from 11.1 to 26.0ngml⁻¹ for Se, and from 1.04 to 9.7ngml⁻¹ for Te having found a good comparability with data obtained after dry-ashing of samples.