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.
出处
《分析化学》
SCIE
EI
CAS
CSCD
北大核心
1994年第8期791-793,共3页
Chinese Journal of Analytical Chemistry
