摘要
以Tween-20为增溶剂,用直接光度法研究了汞与双硫腙络合物的组成,以及该络合物的稳定常数和摩尔吸光系数。测得络合物的最大配位数为4,积累稳定常数分别为:β_1=3.77×10~4,β_2=8.03×10~6,β_3=7.75×10~9,β_4=5.60×10^(12)”。相应的摩尔吸光系数分别为:△ε_1=3.98×10~4,△ε_2=4.18×10~4,△ε=4.25×10~4,△ε_4=4.35×10~4。
We study the composition,stability constants and molar absorptivites of Hg2t-dithizone complex with Tween-20 as compatilizer by seraight spectrophotometry.The maximum coordination number is 4.The complex stability constants are β1=3.77×104,β2=8.03×106,β3=7.75×109 and β4=5.60×1012 respectively and the molar absorptivites are Δε1=3.98×104,Δε2=4.18 ********x 104,Δε3=4.25×104,and Δε4=4.35×104 respectively.
出处
《化学分析计量》
CAS
2000年第1期24-25,共2页
Chemical Analysis And Meterage
关键词
汞
双硫腙
分光光度法
Tween-20增溶剂
mercury,dithizone,spectrophotometry,stability constant,molar absorptivity
