对氯苯基荧光酮光度法测定微量铝  

Spectrophotometric Determination of Aluminium with(4-Chlor)phenylfluorone

作　　者：黄应平[1] 黎心懿[2] 张华山[2] 

机构地区：[1]湖北三峡学院师范学院化学系,宜昌443000 [2]武汉大学化学系,武汉430072

出　　处：《冶金分析》1997年第1期5-6,4,共3页Metallurgical Analysis

摘　　要：研究了在表面活性剂溴化十六烷基三甲铵(CTMAB)存在下,铝(Ⅲ)与对氯苯基荧光酮(pClPF)的显色反应和光度性质。在 pH6.0的 HAc-NaAc 缓冲溶液中,铝(Ⅲ)与试剂形成1:2的络合物。络合物在波长563nm 处的表观摩尔吸光系数ε=1.10×10~5。铝(Ⅲ)含量在0～6.0μg/25ml 范围内符合比尔定律。拟定方法法用于铝铁黄铜及石灰石样品中微量铝的测定,结果满意。The conditions of colour reaction of aluminium with(4-chlor)phenylfluorone(pCIPF)in the presence of CTMAB were studied.In a pH6.0 buffer solution,aluminium reacts with pCIPF and CTMAB to form a 1:2 complex with maximum absorption at 563nm,the molar absorptivity is 1.10×10~5,Beer's law is obeyed in the range of 0-6.0μg/25ml.The method has been applied to determination of aluminium in various samples with satisfactory results.

关 键 词：铝 对氯苯基荧光酮 分光光度法 

分 类 号：O614.31[理学—无机化学] O657.3[理学—化学]