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air, water and soil quality qualité - ER Ambiente - Regione Emilia ...

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TREND OF METAL AND METALLOID CONCENTRATIONS IN SOILS<br />

OF AN AREA IN THE NORTH<strong>ER</strong>N PART OF VICENZA PROVINCE<br />

FLUCTUATION DE LA TENEUR EN C<strong>ER</strong>TAINS METAUX<br />

ET MÉTALLOÏDES DANS LES SOLS<br />

D’UNE ZONE DE LA HAUTE REGION DE VICENCE<br />

ANDAMENTO DEL CONTENUTO DI ALCUNI METALLI E<br />

METALLOIDI NEI SUOLI DI UN'AREA DELL'ALTO VICENTINO<br />

Paolo Gi<strong>and</strong>on (1) *, Roberta Cappellin (2) , Giovanni Gasparetto (1)<br />

(1)<br />

ARPAV Servizio Osservatorio Suoli e Rifiuti, via Baciocchi 9 – 31033<br />

Castelfranco Veneto. Fax (2) ARPAV Dipartimento Provinciale di Vicenza<br />

* Corresponding author: e-mail: pgi<strong>and</strong>on@arpa.veneto.it Fax 0423 720 388.<br />

Summary<br />

In the area that comprises the municipalities situated in the northern part of the<br />

high plains of the province of Vicenza, a survey was conducted on the concentration<br />

of major metals <strong>and</strong> metalloids in the <strong>soil</strong>s: antimony, arsenic, beryllium, cadmium,<br />

cobalt, chromium, copper, mercury, nickel, lead, selenium, tin, vanadium<br />

<strong>and</strong> zinc. Altogether 92 samples were collected in 50 points, at two depths (5-40<br />

cm <strong>and</strong> 80-120 cm, respectively representing the anthropic <strong>and</strong> the natural content<br />

in each metal), on an area of approximately 4900 ha.<br />

The analysis revealed the presence of significantly higher values of chromium,<br />

cobalt, nickel <strong>and</strong> vanadium in the map units with parent basic volcanic rocks than<br />

in units where <strong>soil</strong>s originated from limestone. Only for certain metals (copper,<br />

lead <strong>and</strong> zinc) were higher values found in the upper layer than in the deeper one.<br />

Keywords: Soil; heavy metals.<br />

Résumé<br />

Dans la zone des communes situées dans le nord des hautes plaines de la province<br />

de Vicenza, un sondage a été mené sur la concentration des principaux métaux et<br />

métalloïdes dans les sols: antimoine, arsenic, béryllium, cadmium, cobalt, chrome,<br />

cuivre, mercure, nickel, plomb, sélénium, étain, vanadium et zinc. On a prélevé 92<br />

en 50 points, à deux profondeurs (5-40 cm et 80-120 cm, représentant respectivement<br />

les teneurs naturelle-anthropique et naturelle pour chaque métal), sur une<br />

superficie d'environ 4900 ha.<br />

L'analyse a révélé la présence de valeurs sensiblement plus élevées de chrome, de<br />

cobalt, de nickel et de vanadium dans les unités cartographiques à substrat volcanique<br />

basique que dans celles à matériaux calc<strong>air</strong>es. Seulement pour certains<br />

métaux (cuivre, plomb et zinc) on a trouvé des valeurs plus élevées à la surface<br />

qu'en profondeur.<br />

Mots-clés: Sol; métaux.<br />

167

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