陶器からの金属浸出条件の検討
1969 年 15 巻 5 号 p. 320-322
詳細
1969 年 15 巻 5 号 p. 320-322
The present official method for analysis of lead resulted from glazed potteries is defect in both sensitivity and reproducibility. For improvement of the analytical method, conditions for extracting lead were examined, that is, various glazed pottery samples were extracted with water, 4% acetic acid and 1% powderized green tea extract at 20° and 60°, respectively. Amounts of sodium, lead and magnesium in the extracts were analyzed by atomic absorption spectrophotometer, and that of aluminium was determined by aluminon method. It was proved that the best result was obtained by extracting glazed potteries with 4% acetic acid at 60° for 30 min.
