测定痕量硅的超高灵敏显色反应的研究  

A Study of the Ultra-Sensitive Colour Reaction for Determining Trace Amounts of Silicon

作　　者：李士和[1] 李生泉[1] 刘长松[2] Li Shihe;Li Shengquan;Liu Changsong(Department of Basis Science,Shanxi Agricultural University,Taigu;Department of Chemistry,Shanxi University,Taiyuan)

机构地区：[1]山西农业大学基础部 [2]山西大学化学系

出　　处：《高等学校化学学报》1988年第10期998-1001,共4页Chemical Journal of Chinese Universities

摘　　要：本文详细研究了在阿拉伯树胶存在下,硅钒钼蓝-罗丹明B水相光度法测定硅的新方法.四元络合物的最大吸收峰在595nm处,表观摩尔吸光系数为1.0×10^(6)·L·mol^(-1)·cm^(-1),Sandell灵敏度为2.25×10^(-5)μgSi/cm^(2)。硅含量在0~0.7μg/25mL范围内遵守比尔定律。方法用于水中痕量硅的测定,结果令人满意。An ultra-sensitive colour reaction based on the multicomponent complex, of siliconvanadomolybdate blue-Rhodamine B in aqueous phase has been investigated. The maximum absorption wavelength of the "complex is at 595nm. Beer’s law is obeyed for silicon in the range from o to 0.7μg/25mL. The apparent molar absorptivity is 1.10 ×10^(6)L·mol^(-1)·cm^(-1) at 595nm. This method has been applied to,the determination of trace amount of silicon in different water with satisfactory results.

关 键 词：痕量硅的测定 硅钒钼蓝-罗丹明B四元络合物 分光光度法 高灵敏显色反应 

分 类 号：O65[理学—分析化学]