Synthesis of 1-(4-antipyrine)-3-(2, 4, 6-tribromophenyl)-triazene and its color reaction with copper（Ⅱ）
CHEN Wen-bin1,2, YIN Lei2, WANG Qiong2, MA Wei-xing2, XU Xing-you2
1.Jiangsu Institute of Marine Resources, Lianyungang 222005, China; 2.Department of Chemical Engineering, Huaihai Institute of Technology, Lianyungang 222005, China
Abstract：A triazene reagent of 1-(4-antipyrine)-3-(2,4,6-tribromophenyl)-triazene (ATTBPT) was synthesized and identified, and its color reaction conditions with copper （Ⅱ） were investigated. Auordingly, a new spectrophotometric method for copper （Ⅱ） was established. The experimental results showed that in the presence of Tween-80 solution, ATTBPT could react with copper （Ⅱ） sensitively to form an orange red complex with composition ratio of 2∶1 in sodium borate-sodium hydroxide medium. The maximum absorption wavelength of complex was 505 nm with apparent molar absorptivity of 1.5×105 L·mol-1·cm-1. Beer's law was obeyed for copper （Ⅱ） in the range of 0.3-0.5 μg in 10 mL of solution. The detection limit of method was 0.1 mg/L. This color reaction had good resistance to interference. It was applied to the determination of trace copper (II) in water samples with relative standard deviation (RSD, n=6)≤1.0% and recoveries of 103 %-104 %.
陈文宾，殷磊，王琼，马卫兴，许兴友. 1-(4-安替比林)-3-(2,4,6-三溴苯基)-三氮烯的合成及其与铜（Ⅱ）的显色反应[J]. 冶金分析, 2011, 31(12): 62-66.
CHEN Wen-bin, YIN Lei, WANG Qiong, MA Wei-xing, XU Xing-you. Synthesis of 1-(4-antipyrine)-3-(2, 4, 6-tribromophenyl)-triazene and its color reaction with copper（Ⅱ）. , 2011, 31(12): 62-66.
