有机酸类缓冲介质对稀土－偶氮肿Ⅲ显色性能的影响

Effect of Organic Acid as Buffer Media on the Colour of RE-Arsenazo-Ⅲ

比较研究了甲酸、乙酸和一氯醋酸三种有机酸溶液对稀土－偶氮Ⅲ显色性能的影响，结果表明：在用偶氮Ⅲ显色测定稀土时，选择甲酸溶液作缓冲介质最好。

Effect of three organic acid solutions(formic acid acetic acid and chloroacetic acid) on the colouring property of RE-Arsenazo-Ⅲ isinvestigated comparatively. Results show that formic acid is the bestselection as the buffer media for the determination of RE by arsenazoⅢ colouring.