化学计量学法辅助分光光度法同时测定痕量铁铜锌

Simultaneous Determination of Trace Fe,Cu and Zn Using Spectrophotmetry Asisted by Chemometrics Methods

用乘子法分光光度法，在 pH5.5缓冲溶液中，利用金属－ 2－（ 5－溴－ 2－吡啶偶氮）－ 5－二乙氨基酚（ 5－ Br－ PADAP）－ OP三元络合物显色体系，对混合物中铁、铜、锌三组分进行了同时测定。

Fe,Cu,Zn in aluminium alloy were determined simultaneously by using multiply factor method spectrophotometry.In pH5.5 buffer solution the overlapped spactra of Me－ 2－ (5－ bromo－ 2－ pyridylazo)－ 5－ diethylaminophenol(5－ Br－ PADAP)－ OP complexes can be resolved by the method for the determination.The recovery of synthetic sample is in the range of 97.3－ 103.3％ (n=9).The method was appliced to simultaneous determination of trace Fe,Cu and Zn in aluminium alloy.