摘要
在表面活性剂CTMAB存在下,于PH2.5酸性溶液中,W(Ⅵ)与邻苯二酚紫生成稳定的蓝色的三元络合物,其配位比W(Ⅵ):PV:CTMAB=1:1:4,λmax=660 nm,表观摩尔吸光系数ε=5×104L.mol-1.cm-1。该方法灵敏度、选择性、重现性均好,用于测定钢中钨,结果满意。
It is found that in an acidity of pH2.5 and in the presence of CTMAB,a stable blue ternary complex is formed between W （Ⅵ）,phyrocatechol violet and CTMAB,the mole ratio of this complex is W （Ⅵ）：PV：CTMAB=1：1：4.The absorption maxima of this complex lies at 660 nm and its molar absorptivity is 5×10^4L·mol^-1·cm^-1 .The method proves to be good in sensitivity,selectivity and repeatability in operation and is used for determination of Tungester with satisfactory resuIt.
出处
《机械管理开发》
2005年第6期32-33,共2页
Mechanical Management and Development
关键词
光度法
钨
PV
CTMAB
Photometry Tungesten Phyroeateehol violet CTMAB
