Evaluation of experimental conditions on the response of fluoride and cyanide selective electrodes in flow injection potentiometry

摘要: The response of fluoride and cyanide selective electrodes has been investigated under steady-state flow injection measuring conditions. Response time measurements indicate that at lower concentration levels these ions the surface condition for both sensors is very critical; choice cell geometry, however, minor importance. An acetate buffer without CDTA proposed determinations because better long term stability ISE. Problems associated with corrosion AgI-membrane when applied in a wall-jet configuration are discussed.