Mo(Ⅵ)-5-溴水杨基荧光酮-CTMAB显色反应的研究及应用  

STUDY ON THE COLOUR REACTION OF MOLYBDENUM WITH 5-BROMO-SALICYLFLUORONE IN THE PRESENCE OF CTMAB AND ITS APPLICATION

作　　者：马红燕[1] 拓宏桂[1] 魏向利 李涛 

机构地区：[1]延安大学化学系,延安716000

出　　处：《理化检验（化学分册）》2000年第7期318-319,共2页Physical Testing and Chemical Analysis(Part B:Chemical Analysis)

基　　金：陕西省教委专项科研基金资助课题!(99JK12 4)

摘　　要：研究了新的三元配合物体系 Mo( ) - 5-溴水杨基荧光酮 - CTMAB显色反应的条件 ,最大吸收波长λmax在 52 8nm,试剂λmax在 468nm,对比度为 60 nm,ε52 8=1 .47× 1 0 5L· mol-1· cm-1。钼浓度在 0～ 30 μg/ 2 5ml间服从比耳定律。该体系选择性好 ,方法简便、快速 ,用于测定水样中微量钼 。The colour reaction of Mo(Ⅵ) with 5 bromo salicylfluorone (5 BrSAF) in the presence of CTMAB was studied in this paper. The complex is formed in strong acid medium. The molar absorptivity is 1.47×10 5L·mol -1 ·cm -1 at 528nm. Beer′s law is obeyed over the range of 0~30μg/25ml for Mo(Ⅵ). The method proves to be satisfactory for the direct determination of Mo(Ⅵ) in water.

关 键 词：钼 5-BrSAF CTMAB 显色反应 水 微量分析 

分 类 号：O661.1[理学—分析化学] O614.612[理学—化学]