Carbonate stable isotope constraints on sources of arsenic contamination in Neogene tufas and travertines of Attica, Greece

Abstract

We presented new C and O isotope data of rockforming calcite in terrestrial carbonate deposits from Neogene basins of Attica (Greece), coupled with standard mineralogical and bulk geochemical results. Whereas both isotope datasets [

Bioaccessible arsenic in soil of thermal areas of Viterbo, Central Italy: implications for human health risk

“…Arsenic is often widespread in hot spring deposits (e.g., Webster and Nordstrom, 2003), but not many works investigated As in the associated travertine (Pentecost, 2005;Catelani et al, 2018). In addition to Costagliola et al (2013), travertines with concentrations of As of hundreds to thousands mg/kg were documented in Iran (Hamidian et al, 2019;Khorasanipour & Esmaeilzadeh, 2015), Greece (Kampouroglou et al, 2017;Winkel et al, 2013), and Turkey (Dogan & Dogan, 2007), commonly associated with tectonically active areas, where the waning stages of Quaternary volcanic activity set up hydrothermal circulation at a basin scale, vehiculating emissions of CO 2 -rich fluids to the surface (Minissale et al, 2002). High concentrations of HCO 3 -, as those commonly observed at the thermal pools of Viterbo (Duchi et al, 1985;Di Benedetto et al, 2011), may indeed favor the leaching of As from the rock pile, represented in the study area by volcanic rocks (Casentini et al, 2010), during the fluid ascent (Anawar et al, 2004).…”