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A Catalytic Hydrogen Wave of the Osmium‐Cysteine System
Author(s) -
Kawasaki Mikio,
Kakizaki Teiji,
Hu Wenzhi,
Toyota Kazuhiro,
Hasebe Kiyoshi
Publication year - 1998
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/(sici)1521-4109(199804)10:4<276::aid-elan276>3.0.co;2-c
Subject(s) - osmium , chemistry , hydrochloric acid , valence (chemistry) , inorganic chemistry , hydrogen , catalysis , cysteine , photochemistry , organic chemistry , ruthenium , enzyme
In the presence of cysteine, osmium( VIII ) in hydrochloric acid exhibits a well‐defined maximum wave at –0.85 V (vs. SCE). Effects of the osmium's valence states and the coexisting anions on the reduction wave have been studied polarographically in acidic solution. The high oxidation states (e.g., osmium( VIII ) and ( VI )) in comparison with low oxidation states have an influence on the height of the hydrogen wave.