摘要
在氯化十六烷基吡啶(CPC)和吐温-80(Tween-80)存在下,Ti(Ⅳ)同抗坏血酸(VC)和茜素红S(ARS)于pH4时能形成红色的四元混配胶溶配合物。用等摩尔连续变化法和平衡移动法等确定了配合物的组成:Ti(Ⅳ):VC:ARS:CPC(Tween-80)=1:1:2:4。多元配合物在波长510nm处具有最大的吸收。显色反应的灵敏度限高,摩尔吸光系数达6.5×16^(4)L.mol^(-1)·cm^(-1)。Ti(Ⅳ)浓度在0~10μg/25ml范围内遵循比尔定律。方法可用于某些钢铁、铝合金中微量钛(0.10%以下)的测定。
In the presence of cetyl pyridiniam abloride(CPC)and Tween-80,Ti(W)can Iorm a red qeaternary compltx with arecrtic acid(AA)and ali;arin red S at pH 4.By meaos of methods of equi-molar series and equilitration shift,the ccorositicn of the crnplex is evaluated to be Ti(N)*AAB ARSCPC=1:1:2:4,The qeaternory complex exhitite caxinin at:orgticr at 51Cnm.The moler abror ptivity of the quatemmary syetem is found to te 6.5γ10’L・πo1’·cm¯'.Feer's law is oteyed for t-10μg/25ml for Ti(N).This metlod has been need for the cetermination of trace smounts of titaniom in some steels and alominiom aloys.
作者
汤仲禧
Tang Zbongxi(Jiangxi Changhong Macbine Works,Tongen,336205)
出处
《冶金分析》
CAS
CSCD
北大核心
1994年第2期9-11,共3页
Metallurgical Analysis
关键词
钛
抗坏血酸
黄素红S
分光光度法
Titaninm
Arcortic acid
pli
arin red S
Spcetropbotometry
