对氨基苯基荧光酮分光光度法测定铬Ⅵ

Spectrophotometric determination of chromium Ⅵ with paminophenylfluorone

在盐酸-磷酸介质中,黄色的对氨基苯基荧光酮被铬 氧化为橙红色的产物,其最大吸收波长为497nm。借此建立了对氨基苯基荧光酮氧化显色测定铬 的新方法,铬 量在0～40μg/25mL内服从比尔定律。方法用于钢样中铬的测定,结果满意。

In the medium of HClH3PO4 ,the yellow paminophenylfluorone was oxidized by chromium*&to form an orangered product with the λmax at 497nm,and Beer's law was obeyed over the range of 0-40μg/25mL for chromium*&The proposed method has been applied to the determination of chromium in steel samples with satisfactory results