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Polarographic determination of diethyldithiocarbamate using kinetic and catalytic processes
Author(s) -
Spataru Nicolae,
Calusaru Aurelian
Publication year - 1995
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/elan.1140070615
Subject(s) - polarography , catalysis , kinetic energy , chemistry , inorganic chemistry , organic chemistry , physics , quantum mechanics
Diethyldithiocarbamate (Et 2 DTC) is not polarographically reducible, but in complex combination with cobalt two prewaves are formed in ammonia buffer. These prewaves are due to catalytic cobalt and hydrogen discharge and they are useful for analytical purposes in the determination of Et 2 DTC with high sensitivity (2 × 10 −6 −1 × 10 4 M). The effects of Co II , ammonium hydroxide, and ammonium chloride concentrations on the catalytic waves are described. A mechanism for the formation of the prewaves is proposed, in which adsorption plays a prominent part. Suitable conditions for analytical applications are described.