1-(6-羟基-2-嘌呤基)-3-[4-(苯基偶氮)苯基]-三氮烯分光光度法测定微量镍  

Spectrophotometric Determination of Micro Nickel with 1-(6-Hydroxy-2-Pyrine)-3-(4-Phenylazo-Phenyl)-Triazene

作　　者：张雁宏[1] 樊月琴[1] 郭永[1] 冯峰[1] 刘永文[1] 孟双明[1] 刘慧君[1] 

机构地区：[1]大同大学化学化工学院,山西省大同市水泊寺乡037009

出　　处：《光谱实验室》2007年第4期649-651,共3页Chinese Journal of Spectroscopy Laboratory

摘　　要：在pH=10.97的NaB4O7-NaOH缓冲溶液中,表面活性剂Tween-80存在下,1-(6-羟基-2-嘌呤基)-3-[4-(苯基偶氮)苯基]-三氮烯(HPAPT)与镍的显色反应,形成一种稳定的1∶2红色配合物,其最大吸收波长位于540nm,表观摩尔吸光系数ε540=2.06×105L·mol-1·cm-1,Ni()在0—15μg/25mL范围内符合比耳定律。结合萃取分离,应用于人发、大米和油菜中镍的测定,结果令人满意。In Na2B4O7-NaOH buffer solution of pH = 10. 97 with the presence of surfactant Tween-80, 1- （ 6-hydroxy-2-pyrine）-3- （ 4-phenylazo-phenyl）-triazene reacts with Nickel （Ⅱ） and forms a 1 ： 2 stable red complex with the apparent molar absorption coefficient of 2.06×10^5L·mol^-1·cm^-1 at 540nm. Beer＇s law is obeyed in the range of 0-15 μg in 25ml. of solution. This method was used in the determination of trace amounts of nickel（Ⅱ） in hair, corns and vegetables after extraction with satisfactory results.

关 键 词：1-(6-羟基-2-嘌呤基)-3-[4-(苯基偶氮)苯基]-三氮烯 镍 分光光度法 

分 类 号：O657.32[理学—分析化学]