Seasonal and Annual Variations in Atmospheric Hg and Pb Isotopes in Xi’an, China

We present a 3-year time series of lead (Pb) and mercury (Hg) concentrations and isotope signatures in total suspended particulate (TSP) matter and as total gaseous Hg (TGM) in Xi’an, Northwestern China. Mean concentrations of TSP (299 ± 120 μg m–3), PbTSP (0.33 ± 0.15 μg m–3) and HgTSP (0.64 ± 0.54...

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