環境中の金属に関する研究(第2報)前濃縮-原子吸光法による微量銅の分析と降下煤塵中の銅測定への応用

概要

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A preconcentration-atomic absorption spectrophotometry (AAS) analysis has been established for the measurement of a micro amount of copper in a deposit. The preconcentration is carried out using a column packed with glass beads coated with 3% 4,4,4-trifluoro-1-phenyl butane-1,3-dione (BFA) as a chelating agent. Soluble fraction of the deposit which contains a micro amount of copper (about 1-5 ppb) is passed through the column at a neutral pH range, and the copper is found to be retained quantitatively by the column as a BFA chelate. After the chelate is dissolved in a definite volume of methyl isobutyl ketone (MIBK), copper is measured immediately by flame AAS. As ascertained by recovery test for copper added previously to the sample, no matrix effect of the sample was observed. Average recovery amounted to 96%, and the coefficient of variation was about 8%. Moreover, sensitivity for copper in AAS increased by the addition of excess BFA to the sample.
社団法人日本薬学会の論文
1979-06-30