Large Aliquot Injection Approach in the Electrothermal AAS Determination of Arsenic in Environmental Water Samples
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概要
- 論文の詳細を見る
Determination of As by direct electrothermal atomization atomic absorption spectrometry with a pyropytically-coated graphite furnace treated with W by a single drop treatment technique was reported. The treated PG furnace made it possible to introduce a 100 µl aliquot of sample solution into the furnace with a high precision (RSD <4%). Use of a Pd-modifier made it possible to enhance the precision (RSD <3%) and the sensitivity. A good linearity (correlation factor >0.99) between integrated absorbance and injection volume was observed in the range 0 - 100 µl. The calculated detection limit and characteristic mass (sensitivity) for integrated absorbance were 22 ng l^-1 and 16 pg and for maximum absorbance were 45 ng l^-1 and 13 pg for a 100 µl injection with the Pd modifier at the optimum ashing temperature of 800°C. An interference study for environmental matrices was also carried out. The recoveries of 2 and/or 4 µg l^-1 of As added to various water samples, such as snow, cloud, river and tap waters, were 97 - 104%.
- The Japan Society for Analytical Chemistryの論文
- 2000-02-10
著者
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今井 昭二
徳島大学総合科学部自然システム学科
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KIKUCHI Yoichi
Departments of Radiology, Hokkaido University School of Medicine
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OGAWA Nobuaki
Department of Chemistry, Faculty of Education, Akita University
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Ogawa Nobuaki
Department Of Materials-process Engineering & Applied Chemistry For Environment Faculty Of Engin
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Ogawa Nobuaki
Department Of Chemistry Faculty Of Education Akita University
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Kikuchi Yoichi
Department Of Chemistry Faculty Of Education Iwate University
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IMAI Shoji
Department of Chemistry, Faculty of Integrated Arts and Sciences, The University of Tokushima
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YONETANI Akira
Hitachi Science Systems Co. Ltd.
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Yonetani A
Hitachi Sciencesystems Co. Ltd.
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FUJIKAWA Kenichiro
Department of Chemistry, Faculty of Integrated Arts and Sciences, The University of Tokushima
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Imai Shoji
Department Of Chemistry Faculty Of Integrated Arts And Sciences The University Of Tokushima
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Fujikawa Kenichiro
Department Of Chemistry Faculty Of Integrated Arts And Sciences The University Of Tokushima
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IMAI Shoji
Department of Biomedical Information, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University
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