钼酸盐－丁基罗丹明B光度法测定痕量钌  

Sensitive spectrophotometric determination of trace ruthenium by using of molybdate and butylrhodamine B

作　　者：李祖碧[1] 王加林[1] 徐其享[1] 刘云杰[1] 

机构地区：[1]云南大学,昆明贵金属研究所

出　　处：《黄金》1996年第4期48-51,共4页Gold

摘　　要：研究了用钼酸盐和丁基罗丹明Ｂ（ＢＲＢ）比色测定实际样品中的钌。离子缔合物的最大吸收位于５７０ｎｍ，摩尔吸光度ε值为１．０１×１０６Ｌ·ｍｏｌ－１·。ｃｍ－１．桑德尔灵敏度０．１１ｎｇｃｍ－２．遵守比耳定律范围０～１．４μｇ／２５ｍｌ，测定极限３．３ｎｇ／ｍｌ（ｍ＝８），标准偏差８．３×１０－４～８．７×１０－３，相对标准偏差０．８％～３．３％。考察了４３种共存离子的容许量。本法已用于某些岩矿和冶金产品中钌的测定。A new reaction between ruthenium (Ⅲ ) and molyodate and butylrhodamine B(BRB) has been investigated for the colorimetric determination of ruthenium in actual samples. The ion associate complex absorbs at 570nm with a molar absorptivity of 1.01×106 L·mol-1·cm-1 and a Sandell's sensitivity of 0. 11 ng·cm-2. Beer's law is valid at 0 -1. 4 ug/25ml for ruthenium. The detection limit was 3. 3ng/ml (n=8). The standard deviation are 8. 3×10-4-8.7×10--3. The relative standard deviation was in the range of 0. 8%-3.3%. Tolerance limits for 43 foreign ions were tested. Large quantities of other common metals were tolerated. The method is feasible for deterndnation of ruthenium in some ores and metallurgical products.

关 键 词：炼钌 钼酸盐 丁基罗丹明B 光度法 冶金 岩矿 

分 类 号：TF838.013[冶金工程—有色金属冶金] P618.53[天文地球—矿床学]