Nohut S, Karaböcek S, Güner S, Gök Y
Karadeniz Technical University, Department of Chemistry, Trabzon, Turkey.
J Pharm Biomed Anal. 1999 Jun;20(1-2):309-14. doi: 10.1016/s0731-7085(99)00045-x.
A new selective reagent, S,S'-bis(2-aminophenyl)oxalate (H2L), for the extractive spectrophotometric determination of copper has been prepared. The ligand, H2L, forms a 1:1 complex with copper(II) in methanol. The molar absorptivity of Cu(II)-S,S'-bis(2-aminophenyl)oxalate complex in methanol is 5365 M(-1) cm(-1) at 504 nm. The method has been applied for the determination of copper in pharmaceutical formulations, environmental and foodstuff samples.
已制备出一种用于萃取分光光度法测定铜的新型选择性试剂S,S'-双(2-氨基苯基)草酸酯(H2L)。配体H2L在甲醇中与铜(II)形成1:1配合物。在504 nm波长下，甲醇中Cu(II)-S,S'-双(2-氨基苯基)草酸酯配合物的摩尔吸光系数为5365 M(-1) cm(-1)。该方法已应用于药物制剂、环境和食品样品中铜的测定。
