3-对甲苯基-5-(2′-胂酸基苯偶氮)若丹宁光度法测定镍  

Spectrophotometric Determination of Nickel(Ⅱ) with a New Reagent 3-p-Methylphenyl-5- (2′-Arsenoxylphenylazo)-Rhodanine

作　　者：于京华[1] 欧庆瑜[1] 寿崇崎[2] 王西奎[2] 王来国[2] 

机构地区：[1]中国科学院兰州化学物理研究所,兰州730000 [2]济南大学,济南250022

出　　处：《分析科学学报》2004年第2期193-195,共3页Journal of Analytical Science

基　　金：山东省自然科学基金(Y2003B01)

摘　　要：合成了新型试剂3 对甲苯基 5 (2′ 胂酸基苯偶氮)若丹宁,研究了在表面活性剂存在下试剂与镍的显色反应,建立了光度法测定镍的新方法,其表观摩尔吸光系数为2.6×104L·mol-1·cm-1,镍量在0～20μg/10mL范围内符合比耳定律,可用于水及茶叶中镍的测定。The color reactions of the newly synthesized reagent 3-p-Methylphenyl -5-(2′-Arsenoxylphenylazo)-rhodanine with nickel(Ⅱ) is studied in the presence of the surfactant. The method for the determination of nickel is developed. The molar absorptivity is 2.6×10^(4)L·mol^(-1)·cm^(-1), The Beer's law is obeyed in the range of 0～20 μg/10mL for nickel (Ⅱ). This method can be used for the determination of nickel(Ⅱ) in water and tea samples.

关 键 词：镍 含量测定 3-对甲苯基-5-(2′-胂酸基苯偶氮)若丹宁 分光光度法 

分 类 号：O614.813[理学—无机化学] O657.3[理学—化学]