摘要
合成了新试剂 2 -(2 -喹啉偶氮 ) -4 -二甲氨基苯甲酸 (QADMABA) ,并研究了其与镍的显色反应 ,在 pH8 0硼酸-磷酸二氢钾缓冲介质中 ,吐温 80存在下 ,QADMABA与铜反应生成 2 :1稳定络合物 ,λmax=5 80nm ,ε =9 6× 10 4。镍含量在 0～ 10 μg/2 5mL内符合比尔定律 ,方法用于钢铁样品中镍含量的测定 。
Quinolylazo) 4 dimethylaminobenzoic acid (QADMABA) was synthesized,and its color reaction with nickel(Ⅱ) was studied In the buffer solution at pH8 0 and in the presence of Tween 80,QADMABA can react with nickel(Ⅱ) to form a stable 2:1 complex The molar absorptivity is 9 61×10 4L·mol -1 ·cm -1 at 580nm Beer’s law is obeyed in the range of 0-10μg/25mL This method can be applied to the determination of nickel in steal sample with satisfactory results
出处
《冶金分析》
CAS
CSCD
北大核心
2001年第3期21-23,共3页
Metallurgical Analysis
