A differential pulse polarographic method for the determination of trace amounts of osmium (VIII) using a polarographic maximum wave

摘要

A differential pulse polarographic method for the determination of trace osmium (VIII) is described. In the presence of about 2000-times Cys, osmium (VIII) in a 1.0mol/dm~3 hydrochloric acid solution exhibits a well-defined maximum wave, or peak at -0.85V νs. SCE. The peak height in the presence of Cys was amplified about 1600-times. The Peak height depends on the concentration of hydrochloric acid, and reaches its maximum In a concentration range of 0.75 to 1.25mol/dm~3.