Cathodic stripping voltammetry of cysteine using silver and copper solid amalgam electrodes

Silver and copper solid amalgam electrodes (modified with mercury meniscus and based on amalgamation of fine metallic powder) have been successfully tested for cathodic stripping voltammetry of cysteine. In the case of the silver solid amalgam electrode AgSAE the relative standard deviation (RSD) and the detection limit (3 SD) reached +/-2.3% and 3 x 10(-9) mol l(-1) cysteine, respectively. (C) 2002 Elsevier Science B.V. All rights reserved.