Selective extraction of water-soluble thallium fraction from contaminated drinking-water distribution networks: optimization of the procedure and extracts speciation
Metallic pipes in drinking water (DW) distribution networks are able to retain some elements over time that may be subsequently released into the water. In September 2014, researchers from the Department of Earth Sciences (University of Pisa, Tuscany, Italy) reported the presence of thallium in water samples collected from Pietrasanta DW wells (Lucca, Tuscany, Italy) at concentrations (up to 10 μg/L) much higher than US-EPA max contaminant level goal (2.0 μg/L).