Determination of copper, zinc, and selenium in human plasma and urine samples by potentiometric stripping analysis and constant current stripping analysis

Potentiometric stripping analysis and constant current stripping analysis a re proposed as routine methods for analysis of copper, zinc and selenium in plasma and urine samples. The analytical performance of these methods is c omparable with that reported for atomic absorption spectrometry. However th e low cost, greater simplicity of the apparatus, and the facility of execut ion make this methodology a valid candidate for routine application in Clin ical Chemistry laboratories. (C) 1999 Elsevier Science B.V. All rights rese rved.