無炎原子吸光法による魚肉中の水銀分析 : 金アマルガム捕集法と還元気化法の比較

概要

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The determination of mercury in shark muscle, oyster powder and Orchard Leaves (NBS-SRM,1571) by using the combustion-gold trap-flameless atomic absorption method was compared with that of acid digestion-reduction-flameless atomic absorption method. The former method appeared to have a tendency to give a higher value of mercury, especially in fish sample. The influence of the oxygen flow rate, the temperature of the furnace for the combustion of the sample, and the time of combustion on the measurement of mercury in standard solution and in Orchard Leaves were examined. The variation of oxygen flow rate caused a different influence on the mercury determination of standard solution and that of Orchard Leaves. From these results it is suggested that the combustion-gold trap method should be utilized with much care. The concentration of K, Na, Mg, Ca, Cu and Zn in shark muscle were determined by flame emission and atomic absorption spectrometty utilizing the same solution with the acid digestion solution used for mercury determination.
社団法人日本分析化学会の論文
1977-07-05