二硫代乙二酰胺富集矿石中微量铑和铱

A Preconcentration and Determination of Trace Amounts of Rh and Ir in Minerials with Dithioacetamide

近年来,用含硫试剂沉淀富集、铑、铱工作不少。本文提出用二硫代乙二酰胺作沉淀剂,在稀硫酸中以毫克量砷为载体,氯化亚锡为还原剂富集微量铑和铱,并拟定了矿石中微量铑、铱的分析流程。本法较之铅试金法流程简单,操作方便,回收率高。

A method is suggested for determination of Rh and IT. It is based on using dithioacetamide as preciptating agent for preconcentration of Rh and Ir. In a solution of dilute sulfuric acid Rh and Ir are reduced by stannous chloride, the microgram quantity of arsenic is used as carrying agent. The recoveries obtained are in agreement with those obtained by assay method.