Potentiometric stripping analysis and anodic stripping voltammetry with carbon fiber electrodes

High-modulus carbon fibers are used as working electrodes in differential-pulse stripping voltammetry and potentiometric stripping analysis. Different types of electrodes (particularly single-fiber and brush electrodes) are compared with regard to reproducibility, sensitivity, and practical aspects. Zinc, cadmium, and lead are determined in the 100 μg 1^?1 to 1 mg l^?1 range and optimum experimental parameters are described. The cut single-fiber electrode has the best general characteristics.