A catalytic method for the determination of trace osmium in continuous flow and flow injection systems

• Published in: Journal of analytical chemistry (New York, N.Y.) Vol. 66; no. 5; pp. 522 - 527
• Main Authors: Khomutova, E. G., Ostanina, O. I.
• Format: Journal Article
• Language: English
• Published: Dordrecht SP MAIK Nauka/Interperiodica 01-05-2011; Springer
• Subjects: Analytical Chemistry; Chemistry; Chemistry and Materials Science; osmium; kinetic catalytic method; continuous flow and flow injection systems; determination procedure
• ISSN: 1061-9348; 1608-3199
• DOI: 10.1134/S1061934811050078

A procedure has been developed for the determining osmium using a catalytic indicator reaction of arsenic(III) oxidation with potassium bromate and neutral red in continuous flow and flow injection systems. The possibilities of the flow systems have been compared on an example of the proposed reaction, and the regularities of this reaction conducted in different flow systems have been revealed. Recommendations on the choice of the optimal variant of the flow system are given. The accuracy of the procedure has been confirmed by the results of determining osmium in a State Reference Sample.