Monitoring of high hydrogen peroxide concentrations by voltammetryc.
Different electrode systems have been investigated as possible voltammetric sensors for in-line measurements and monitoring of high concentrations of hydrogen peroxide (up to 30 g/l) as used in alkaline textile bleaching liquor. With most of the tested electrodes insurmountable ohmic potential losses are encountered, resulting in a saturation of the sensor output current. Taking accuracy and stability with time into consideration promising results are obtained with a rotating glassy carbon electrode, an ultra-micro platinum electrode and stationary titanium and zirconium electrodes, in decreasing order of preference when selectivity versus the many possible additives used in industry are not yet taken into account.
Westbroek
P
P
Vakgroep Analytische Chemie, Universiteit Gent, Krijgslaan 281, S12, B-9000, Gent, Belgium.
Haute
B V
BV
Temmerman
E
E