Journal
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
Volume 382, Issue 7, Pages 1567-1573Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s00216-005-3356-4
Keywords
platinum-group metals; lead; voltammetry; spectroscopy; vegetables
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This paper reports voltammetric sequential determination of Pt(II), Pd(II), and Rh(III), by square-wave adsorption stripping voltammetry (SWAdSV), and Pb(II), by square-wave anodic stripping voltammetry (SWASV), in vegetable environmental matrices. Analytical procedures were verified by the analysis of the standard reference materials: Olive Leaves BCR-CRM 062 and Tomato Leaves NIST-SRM 1573a. Precision and accuracy, expressed as relative standard deviation and relative error, respectively, were always less than 6% and the limits of detection (LOD) for each element were below 0.096 mu g g(-1). Once set up on the standard reference materials, the analytical procedure was transferred and applied to laurel leaves sampled in proximity to a superhighway and in the Po river mouth area. A critical comparison with spectroscopic measurements is discussed.
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