新试剂3,5-二溴-4-偶氮8-羟基喹啉苯基荧光酮光度法测定微量铝  

Spectrophotometric Determination of Aluminium with New Reagent 3,5 Dibromo 4[(8 Hydroxyquinoline)azo]Phenylfluorone

作　　者：黄应平[1,2] 张华山[1,2] 黎心懿 

机构地区：[1]湖北三峡学院化学系 [2]武汉大学化学系

出　　处：《分析科学学报》1997年第3期216-221,共6页Journal of Analytical Science

摘　　要：在溴化十六烷基三甲铵（ＣＴＭＡＢ）存在下，ＰＨ６、０的ＨＡｃ－ＮａＡｃ缓冲介质中，铝与新试剂３、５二溴－４－偶氮８－羟基喹啉苯基荧光酮形成红色三元胶束配合物，最大吸收波长位于５６４ｎｍ，表现摩尔吸光系数ε为１．３５×１０５Ｌ·ｍｏｌ－１·ｃｍ－１，铝浓度在０～５μｇ／２５ｍＬ范围内符合比耳定律，拟定的方法用于铝铁黄铜中微量铝的测定，结果满意．In the presence of CTMAB and in pH6.0 HAc NaAc buffer solution, Aluminium reacts with DBAHQPF to form a 1∶2 red micelle complex. The maximum absorption is at 564nm. The molar absorptivity is 1.35×10 5 L·mol -1 ·cm -1 . Beers law is obeyed up to 5μg of Al in 25mL. The method has been used in the determination of trace amount of Aluminium in brass samples with satisfactory results.

关 键 词：苯基荧光酮 铝 分光光度法 DBAHQPF 

分 类 号：O614.31[理学—无机化学]