蛍光X線定量分析のための水中微量金属の活性炭による濃縮

抄録

Adsorption characteristics of copper, zinc, lead, and iron ions on activated carbon, using L-ascorbic acid as a complexing agent were investigated. Under the optimized condition, the simultaneous recovery for 4 elements was good enough to apply to the preconcentration in X-ray fluorescence analysis. The procedure was applied to the determination of the trace elements in sea water and the activity of L-ascorbic acid was found to be comparable to that of 8-qinolinol. The detection limits for the analysis were Cu 2.3 μg, Zn 1.9 μg, Pb 8.4 μg, and Fe 2.3 μg. The coefficients of variation were Cu 2.9 %, Zn 2.7 %, Pb 5.4 %, and Fe 5.5 %.