二溴羟基苯基荧光酮-AI-F!^--Triton X-100四元显色体系的研究与应用  

STUDY OF THE FOUR-COMPONENT CHROMOGENIC REACTION SYSTEM OF DBHPF-Al( Ⅲ )-F^--TRITON x-100 AND ITS ANALYTICAL APPLICATION

作　　者：刘金红[1] 汤淳东[1] 潘教麦[2] 

机构地区：[1]南通职业大学,南通226007 [2]华东师范大学化学系

出　　处：《理化检验（化学分册）》1999年第1期28-29,33,共3页Physical Testing and Chemical Analysis(Part B:Chemical Analysis)

摘　　要：研究了二溴羟基苯基荧光酮与铝的显色体系.在Triton X-100及F^-存在下,铝与二溴羟基苯基荧光酮在碱性介质中形成1∶2的玫瑰红色的四元配合物,最大吸收波长559nm.摩尔吸光系数1.46×10~5,铝含量在0～5μg/25ml符合比耳定律.方法灵敏,选择性高,用于镁合金中微量铝的直接测定,取得满意结果.It is reported in this paper that in the presence of triton X-100 and fluoride ion, aluminium(Ⅲ) reacts with dibromohydroxy phenylfluorone (DBH-PF) in alkaline solution to form a rose colord four-component-complex with its absorption maxima at 559nm, and molar absorptivity of 1. 46×105L · mol^(-1) · cm^(-1). Beer's law holds in the concentration range for aluminium(Ⅲ) of 0-5μg/25ml. The proposed method proves to be sensitive and selective, and has been applied to the determination of microamounts of aluminium in magnesium alloys with satisfactory results.

关 键 词：四元 测定 铝 配合物 DBH-PF 光度法 显色反应 

分 类 号：O614.31[理学—无机化学]