DCS-偶氮胂分光光度法测定锆的研究和应用──伟晶岩中锆和稀土的连续测定

Study of Colour Reaction of Zr with DCS-Arsenazo and Its Application ─Determination of Zirconium and Rare Earth in Rock

显色剂ＤＣＳ－倡氮胂与锆在０．０８～０．４８ｍｏｌ·Ｌ－１盐酸介质中显色反应效果好．试剂及配合物的最大吸收分别在５３８ｎｍ和６４０ｎｍ，表观摩尔吸光系数为ε＝５．８８×１０４，锆与试剂的配位比为１∶２，一般常见元素的允许量均在几毫克，可用于矿石中锆的光度法测定．

Zirconium forms a purple complex with DCS-Arsenazo in 0. 08～0. 48 mol/L HCl,ε=5. 88×104. A new spectrophotometric method for separation of Zr and light rare earth by ion exchange isdetermined satisfactorily by the same reagent. The method is simple rapid.