摘要
报道了新试剂对氯苯重氮氨基偶氮苯的合成、纯化、结构鉴定及性质。研究了该试剂在TritonX 10 0存在下与镍的显色反应。在pH10 2的硼砂 -氢氧化钠缓冲介质中 ,试剂与镍形成 3∶1橙红色络合物 ,其最大吸收波长位于 5 0 4nm处 ,表观摩尔吸光系数为 1 2 5× 10 5,镍的浓度在 0～ 0 2 4mg/L的范围内符合比尔定律。方法应用于铝合金中镍的测定 ,结果满意。
A new triazene reagent pchlorobenzenediazoaminoazobenzene(pCBDAA)has been synthesized,purified and identifiedThe color reaction of this reagent with nickel has been studiedThe results show that in the presence of Triton X100 and borax buffer solution at pH 102,the reagent reacts with nickel to form an orange stable complex with a molar ratio of 3∶1, the complex has a maximum absorption at 504 nmThe apparent molar absorptivity of the complex is 125×105L·mol-1·cm-1,Beer's law is obeyed in the range of 0-7μg per 25mL for nickel*'The method has been applied to determine nickel in aluminium alloy with satisfactory results
出处
《冶金分析》
CAS
CSCD
北大核心
2003年第3期6-8,共3页
Metallurgical Analysis
基金
广西自然科学基金资助课题(9811026)
