摘要
合成了新试剂5—(6—溴—苯骈噻唑—2—偶氮)—8—氨基喹啉(BBTAQ)并测定了它的酸离解常数;研究了BBTAQ与Ni(11)的显色反应。在pH为9.5的硼砂缓冲溶液中和CTMAB存在下,BBTAQ与Ni(11)形成4:1的紫色络合物,λ_(max)=608nm,ε=1.15×10~51·mol^(-1),Cm^(-1)。镍量在0～12.5μg/25ml范围内符合比尔定律,本法成功地用于铝合金中镍的测定。
A new reagent,5—(6—bromine—benzothiazole—2—azo)—8—aminoqulinoline (BBTAQ), has been synthesized and its acid dissociation was determined.The colour reaction of BBTAQ to Ni(Ⅱ) Was studied.In the buffer solution of borax,with Ph value of 9.5 and in the presence of CTMBA,a violet complex of BBTAQ and Ni(Ⅱ) with the ratio fo 4:1 is formed,λ_max=608nm,ε=1.15×10~5l·mol(-1)·cm(-1).When the content of nickle is in the range of 0～12.5 μg/25ml,it accords with Beer's Law.It has successfully been used to determine the nickle con-tent in aluminum alloy.
出处
《云南化工》
CAS
1993年第2期39-41,45,共4页
Yunnan Chemical Technology
关键词
苯骈噻唑
偶氮
氨基喹啉
光度法
镍
5—(6)bromine—benzothiazole—2—azo)—8—aminoqulinoline spectrophotometry acid dissociation constant determination of nickle
