PolymerBased Electrode for the Selective Detection of Dichloramine

ReportNo WSAA 38

December 1991

 

SYNOPSIS

 

Chloramineswhich are formed during chlorination of potable water have a dramatic effect onthe water taste and odour, in particular the specific form of dichloramine.

 

Inour laboratories a method for amperometric detection of low levels ofchloramines using a glassy carbon electrode was reported previously. However,in that work selective detection of dichloramine was not obtained.

 

Werepresent here the investigation into polypyrrole and polypyrrole-dispersedmercury coated glassy carbon electrodes for the selective detection ofdichloramine. The selectivity could be altered using various counterionsincorporated into the polymer and/or by applying increasingly negativepotentials.

 

Thiswork indicated that the use of a selective polymer based electrochemical sensorfor dichloramine detection is a feasible approach.

 

Copiesof the Report are available from WSAA, price $A20. Orders may be placed throughthe Bookshop at www.wsaa.asn.au or by email to info@wsaa.asn.au.