Journal Title
Title of Journal: Environ Geol
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Abbravation: Environmental Geology
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Publisher
Springer-Verlag
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Authors: Giuseppe Montana Luciana Randazzo Ilaria A Oddo Mariano Valenza
Publish Date: 2008/01/18
Volume: 56, Issue: 2, Pages: 367-380
Abstract
Chemical mineralogical and isotopic composition 34S/32S analyses were carried out on “black crusts” developed on the old buildings of Palermo Sicily with the aim to distinguish between natural and anthropogenic sulphur sources Furthermore individual samples of total suspended particulate TSP were collected and analysed in order to estimate the influence of air pollution on the decay process of calcareous stones in a typical southern Mediterranean coastal environment SEM/EDS analysis Xray diffractometry IR spectroscopy and liquid chromatography led to the compositional characterization of “black crusts” and airborne particulate matter in the city Sulphur isotopic compositions of gypsumbearing crusts showed a prevailing contribution of anthropogenic sources vehicle exhaust and other combustion processes Natural sulphur and/or sulphate sources biogenic and/or seaspray were shown to play a secondary role These data can be considered a starting point for the determination of the rate of growth of “black crusts” in a coastal Mediterranean urban environment like Palermo In the future they might be useful to local authorities for planning more efficient maintenance action in order to slow as much as possible the rate of decay of the monumental heritage of the city
Keywords:
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