在聚乙烯醇-124存在下钌-二氯化锡-乙基紫离子缔合体系测定钌的研究  

Determination of Ruthenium in the Ruthenium-Tin Chloride-Ethyl Violet System

作　　者：吕耀忠[1] 陆兆兴 段瑞林 吴秀兰[1] 周惠文[1] 李新民[1] 

机构地区：[1]山西大学化学系,太原030006

出　　处：《分析化学》1994年第8期791-793,共3页Chinese Journal of Analytical Chemistry

摘　　要：本文对钌(Ⅲ)SnCl_2-EV高灵敏显色体系测定钌进行了研究。摩尔吸光系数ε_(640nm)高达1.5×10~5L.mol^(-1)·cm^(-1),钌含量在0.2～1.4和1.4～2.2μg/25ml范围内符合比尔定律.对外来离子的干扰进行了研究,并对纯金属镍中痕量钌的含量进行了测定。A highly sensitive spectrophotometry for the determination of ruthenium has been developed. In a HCOOH-NaCOOH buffer solution at pH 3. 8 and in the presence of PVA-124, ruthenium reacts with SnCl2and ethyl violet to form an association complex. The molar absorptivity is 1.5×106L. mol-1. cm-1at 640 nm. Beer's law is obeyed in the range of 0. 2-1. 4 and 1. 4-2. 2 μg Ru/25 ml. The colour solution is stable at 90 min at the room temperature. The method was applied to the determination of Ru in nickel powder with satisfactory results.

关 键 词：钌 乙基紫 氯化亚锡 聚乙烯醇-124 

分 类 号：O614.821[理学—无机化学]