セリウム(III)の蛍光測定によるチオ硫酸イオンの高感度測定におけるエタノールの添加効果

概要

論文の詳細を見る
Effect of ethanol on the measurement of trace amounts of thiosulfate has been investigated by a fluorescence detection method of Ce(III), which is formed via the reaction of Ce(IV) with ethanol in the presence of thiosulfate. In this case, the measured intensity of Ce(III) fluorescence was extremely enhanced by the addition of trace amounts of thiosulfate, although Ce(IV) in the absence of thiosulfate was somewhat reduced by ethanol. Therefore, thiosulfate is thought to play a critical role on reducing Ce(IV) with ethanol. This method was applied to the measurement of the trace amounts (μM. levels) of thiosulfate and gave much higher sensitivity for the thiosulfate measurement compared with a method based on the reaction of Ce(IV) with thiosulfate without using methanol.