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Abstract
The present work regards the simultaneous voltammetric determination of Os(VIII), Ru(III) and Pb(II) by square wave catalytic adsorptive voltammetry (SWCAdV) in vegetable environmental bio-monitor matrices. The analytical procedure was 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 generally lower than 6% in all cases, whereas the limits of detection for all elements were lower than 5.0 μg kg−1. Once set up on the standard reference materials, the analytical procedure was transferred and applied to laurel leaves sampled in proximity to superhighway and in the Po river mouth area. A critical comparison with spectroscopic measurements is discussed.
Acknowledgements
The author is grateful to Professor Dora Melucci for her part of the experimental work and assistance. Investigation supported by University of Bologna (Funds for Selected Research Topics).