Sulphur and oxygen isotope analysis to identify sources of sulphur in gypsum-rich black crusts developed on granites.


We describe the results of sulphur and oxygen isotope analyses used to identify sources of the gypsum present in black crusts that grow on the granite of historical buildings. The crusts were sampled at various locations in and near the city of Vigo (NW Spain) and were analysed for their sulphur content and δ(34)S and δ(18)O isotope ratios. Sampled crusts… (More)
DOI: 10.1016/j.scitotenv.2014.02.128


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