新试剂DBN-偶氮胂光度法测定银合金中的锆  

Spectrophotometric Determination of Zircoinum in Silver Alloy with DBN-Arsunazo

作　　者：吴瑞林[1] 洪英[1] 余席茂[2] 

机构地区：[1]昆明贵金属研究所 [2]武汉大学化学系

出　　处：《冶金分析》1990年第2期11-13,共3页Metallurgical Analysis

摘　　要：本文研究了锆(Ⅳ)—DBN-偶氮胂体系显色反应,拟订了最佳分析条件和分析步骤,可直接用于银合金中微量锆的测定。The colour reaction of Zr (IV) -DBN-Arsenazo system has been studied. In the medium of 0.4 -1.0mol/L HC104 a blue complex of Ama.x = 640nm and e = 4.0X104 forms. Beer's law is obeyed in the concentration range of 2-10ug/10ml for Zr. The method is simple, highly selective, and the micro-amounts of Zr in silver alloy can be directly determined with a relative standard deviation of 0.78-1.55%.

关 键 词：银合金 锆 测定 光度法 

分 类 号：TG146.32[一般工业技术—材料科学与工程]