新试剂5-氟偶氮胂-I测定铍的研究

STUDIES OF THE DETERMINATION OF BERYLLIUM WITH NEW REAGENT 5-Fluoroarsenazo-I

本文报道了试剂 5-氟偶氮胂 -I与铍的显色反应 ,研究了可见分光光度法测定铍的条件。试剂与铍在pH =6 .12HAc -NaAc缓冲溶液中形成紫色络合物。线形范围为 0 - 7.5μg/2 5mL。用于分析锌基合成样中的铍 。

This paper reports the colour reaction of Beryllium with 5-Fluoroarsenazo-I .The stable purple complex was formed at pH 6.12 in HAc-NaAc buffer,exhibiting maximum absorptivity at 544nm.A linear relationship was obtained ove r the range of 0-7.5μg/25mL for Be 2+ .The proposed method is applied to the d etermination of Beryllium in Zinc.The results are satisfactary.