A SIMPLE TITRIMETRIC METHOD FOR THE DETERMINATION OF OSMIUM(IV) IN STANDARD CHLORIDE SOLUTIONS AND INTERMETALLIC ALLOYS

被引：3
|
作者：
Vrublevska, T. [1 ]
Rydchuk, M. [1 ]
Bonishko, O. [1 ]
Mykhalyna, G. [1 ]
机构：
[1] Franko Lviv Natl Univ, Lvov, Ukraine
来源：
MATERIALS SCIENCE | 2010年 / 46卷 / 03期
关键词：
osmium(IV) hexachloride; standardization; titrimetry; potentiometry; intermetallic alloy; SPECTROPHOTOMETRIC DETERMINATION; RUTHENIUM; KINETICS;
D O I：
10.1007/s11003-010-9303-3
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A new method for the determination of osmium(IV) in aqueous chloride solutions by means of the iodometric titration with visual (by using starch as an indicator) and potentiometric indications of the end of the process of titration is developed. This simple and rapid method is based on the interaction of Os(IV) with the excess iodide ions in sulfuric-acid media and on the titration of liberated iodine with a standardized solution of sodium thiosulfate. The method was approved by detecting the milligram quantities of osmium(IV) in standard solutions and intermetallic alloys. The relative standard deviations (RSD) did not exceed 1.5%.
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页码：399 / 407
页数：9
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