超高灵敏显色反应及其应用的研究Ⅲ.锑(Ⅲ)—乙基罗丹明B—碘化物体系  

Study on Extra-High Sensitive Colour Reactions and Their Applications Ⅲ.Antimony (Ⅲ) -Ethyl Rhodamine B-Iodide Complex

作　　者：程刚[1] 许生杰 

机构地区：[1]中国科学院长春应用化学研究所

出　　处：《冶金分析》1989年第2期5-8,共4页Metallurgical Analysis

基　　金：国家自然科学基金资助课题

摘　　要：本文研究了在聚乙烯醇-124存在下,锑(Ⅲ)—乙基罗丹明B—碘化物的显色反应。缔合物λ_(max)=605nm表观摩尔吸光系数为7.0×10~3。锑浓度在0.1～2.5μg/25ml时服从比尔定律。藉氢化物分离技术,本法可用于地球化学标样中痕量锑的测定。A highly sensitive spectrophotometric method has been developed for the determination of trace antimony,based on the formation of an complicated ion-association complex of antimony with ethyl rhodamine B (ERB) and iodide in the presence of polyvinyl alcohol-124, the maximum absorption of the ion-association complex is at 605nm and its apparent molar absorptivity is 7.0×10,Beer's law is obeyed for 0.1-2.5g Sb/25ml. The proposed method has been applied to determine trace Sb in geochemical sample with satisfactory results. The reaction mechanism has been discussed.

关 键 词：锑 乙基罗丹明B 碘化物 显色反应 

分 类 号：TG146.18[一般工业技术—材料科学与工程]