硫脲及硫脲类物质化学发光分析研究  

Studies on Thiourea and Its Derivatives by Chemiluminscence Analysis

作　　者：何治柯[1] 袁丁[1] 罗庆尧[1] 余席茂[1] 曾云鹗[1] 

机构地区：[1]武汉大学化学系,宜昌医专医用化学系

出　　处：《分析测试学报》1994年第1期33-36,共4页Journal of Instrumental Analysis

基　　金：国家自然科学基金

摘　　要：研究了碱性条件下（ｐＨ１０～１１．５）硫脲对鲁米诺－过氧化氢－Ｃｒ（Ⅲ）体系化学发光的抑制效应。发现在３．０×１０￣（－４）～２．０×１０￣（－６）ｍｏｌ／Ｌ范围内，硫脲浓度与发光强度有良好线性关系。通过对几种硫脲类物质的系统研究，发现其与硫脲有相同的抑制效应。并探讨了抑制效应机理。本法可用于尿样中硫脲的直接测定，获得满意结果。The inhibition effect of chemiluminacence in Luminol-H2O2-Cr(Ⅲ)system by thiourea and its derivatives at pH10～pH11.5 was studied. It can be used for the determination of microamounts of thiourea and its derivatives. The linear range is3.0×10(-4)～2.0×10(-6)mol/L.Tne mechanism of the inhibition effect of thiourea is also discussed. This method has been applied to determine the thiourea in urine directly.

关 键 词：化学发光 硫脲 抑制效应 

分 类 号：O623.8[理学—有机化学]