マイクロ波加熱分解/ゼーマンバックグラウンド補正黒鉛炉原子吸光分析法による都市ごみ焼却飛灰中のセレンの定量

概要

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Municipal-waste incineration fly-ash samples were digested by microwave-digestion procedures with an acid mixture of HClO_4-HNO_3-HF. Then, selenium in the digested sample solution (in 1 M-HCl, trace-HClO_4) was directly determined using graphite-furnace AAS with a Zeeman-effect background correction. Platform atomization was used and peak-area absorbance measurements were utilized. Palladium and nickel were used as modifiers. The palladium modifier stabilized selenium at a higher temperature than did the nickel modifier, resulting in a better sensitivity. An aqueous calibration curve was used and the method of additions was not necessary. The present investigated method was applied to the analysis of a certified reference material (BCR No. 176). The analytical result was in good agreement with the certified value. The present method has been successfully applied to the analysis of actual samples.
社団法人日本分析化学会の論文
1998-03-05