痕量碲的极谱测定研究  

Studies on polarographic determination of trace tellurium

作　　者：祝志宏[1] 钟治宇[1] 

机构地区：[1]华中师范大学化学系,武汉430079

出　　处：《华中师范大学学报（自然科学版）》2000年第4期450-453,共4页Journal of Central China Normal University：Natural Sciences

基　　金：湖北省自然科学基金!(99J120)

摘　　要：用JP－2型示波极谱仪，883笔录式极谱仪和MF－1型多功能伏安仪在铼（Ⅶ）-盐酸体系中对痕量碲进行了极谱研究，讨论了碲还原波的电极机理，实验选择了产生催化波的最佳条件，碲的浓度在2×10^-10,1^10^-9g/mL之间与峰电流有线性关系，检测限可达1×10^-10g/mL，该法用于粮食作物中痕量碲的测定，效果良好。Detection of trace tellurium has been studied in Re(Ⅶ)HCl system by oscillopolarograph model JP2, penrecording polarograph model 883 and multifunction voltamoscope model MF1A.The electrode process of reduction wave of tellurium are discussed. The optimal conditions for producing this wave have been investigated. The wave height is proportional to the concentrati on of tellurium over a range of 2*10-10~1*10-9 g/mL.The detectionlimit can reach 1*10-10 g/mL. The method has been applied to the determination of trace amounts of tellurium in beans with a good results.

关 键 词：碲 极谱波 铼Ⅶ-盐酸体系 测定 

分 类 号：O613.53[理学—无机化学] O657.14[理学—化学]