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Application of glassy carbon substrated cyanide‐sensitive electrodes in determination of cyanide and mercaptan levels of wastewater
Author(s) -
Stankovic Slavka M.,
Jovanović Momir S.,
Jovanović Vladislava M.,
Djikanović Milka
Publication year - 1993
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.1140050813
Subject(s) - cyanide , chemistry , glassy carbon , potentiometric titration , prussian blue , inorganic chemistry , hydrogen cyanide , saturated calomel electrode , iodometry , hydrogen peroxide , wastewater , bicarbonate , carbon fibers , titration , electrode , organic chemistry , electrochemistry , working electrode , cyclic voltammetry , materials science , engineering , waste management , composite material , composite number
Abstract Quantities of free and complex cyanides and mercaptans were determined in wastewater. Levels of free and complex cyanides were determined after previous oxidation of mercaptans by hydrogen peroxide. The procedure used for cyanide determination relied on applying a laboratory‐made glassy carbon (GC) substrated melt‐coated Agl “cyanide‐sensitive” electrode. The level of mercaptans was determined by iodometric titration in bicarbonate solution. Iodine was coulometrically generated using the depolarization end point detection on a GC/saturated calomel electrode indicating a couple connected directly to the recorder.