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Abstract

A study in the Mount Etna volcano area on trace elements deposition has been carried out using mosses and superficial soils. Thirty nine samples of different moss species were collected in an area of 150 km2. Besides Hypmum cupressiforme, commonly employed in bio-monitoring studies, Homalothecium sericeum, Ceratodon purpureus, Polytrichum juniperinum, Polytrichum piliferum, Pohlia cruda were employed too. After suitable treatments, the mineralizations were done with an acid digestion using a microwave, the concentration of the elements Al, As, Bi, Cd, Co, Cr, Cu, Mn, Ni, Pb, Sb, Sc, Ti, TI, V and Zn, were obtained via ICP-MS (apart from Hg which was analysed through SAA). The distribution of the concentration in soils was found to be almost homogeneous apart from Cd, Cr, Cu, Ni, Pb, Ti and Zn. Only Zn exceeds the values of the threshold specified under the law of D.M. 471/99.

The concentrations measured in the mosses were generally low and indicate a reduced deposition of elements. Cd, Ti, TI and V showed high concentrations similar to those found in areas with a elevated anthropic pressure. Cd and Hg have a natural (volcano) and anthropic origin due to the uniform distribution of the two elements in air. Also Sb shows a pattern due mainly to human activities while the remaining elements have a natural origin. Further research to measure the rate of growth of mosses could make it possible to carry out a more accurate interpretation of the results in order to evaluate the rate of deposition.

Additional information

Authors: PRIVITERA M, Università degli Studi di Catania (IT);PUGLISI M, Università degli Studi di Catania (IT);CENCI R M, European Commission, Joint Research Centre, Institute for Environment and Sustainability, Ispra (IT);DABERGAMI D, European Commission, Joint Research Centre, Institute for Environment and Sustainability, Ispra (IT);TRINCHERINI P, European Commission, Joint Research Centre, Institute for Environment and Sustainability, Ispra (IT)
Bibliographic Reference: An oral paper given at: Societa' Italiana.della Scienza del Suolo. Convegno Annuale. Conservazione della risorsa suolo Organised by: Societa' Italiana della Scienza del Suolo and Unlversita' di Piacenza Held at: Piacenza, 8-10 June 2002
Availability: Available from European Commission, JRC Knowledge Management Unit, Ispra (IT) Tel: +39 033278 9843 or +39 033278 9864 Fax: +39 033278 9623 E-mail: jrc-publications-office@ec.europa.eu
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