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.
出处
《黄金》
CAS
北大核心
1996年第4期48-51,共4页
Gold
