title: An electrochemical microsensor for chloride.
abstract: The potential-response of a microdisk electrode made with a chloride-doped polypyrrole (PPY) film on a carbon fibre (CF) has been examined. The effect of the polymerization conditions on the response characteristics is discussed. The optimum conditions for preparing the electrode are: cycling potential from +0.8 to +1.0 V in 0.1-0.2M pyrrole (Py) containing 0.1M LiCl, electropolymerization time 15-20 min. The electrode gives a Nernstian response of 56-58 mV/pCl and a detection limit of 3.6 x 10(-5)M chloride. It has the advantages of low resistance, short conditioning time and fast response. It has been used satisfactorily for detection of chloride in serum.
authors.affiliation: Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, People's Republic of China.
authors.forename: S
authors.initials: S
authors.lastname: Dong
authors.forename: G
authors.initials: G
authors.lastname: Che