Abstract：
:Mining operations are a potential source of metal and metalloid contamination by atmospheric particulate generated from smelting activities, as well as from erosion of mine tailings. In this work, we show how lead isotopes can be used for source apportionment of metal and metalloid contaminants from the site of an active copper mine. Analysis of atmospheric aerosol shows two distinct isotopic signatures: one prevalent in fine particles (<1μm aerodynamic diameter) while the other corresponds to coarse particles as well as particles in all size ranges from a nearby urban environment. The lead isotopic ratios found in the fine particles are equal to those of the mine that provides the ore to the smelter. Topsoil samples at the mining site show concentrations of Pb and As decreasing with distance from the smelter. Isotopic ratios for the sample closest to the smelter (650m) and from topsoil at all sample locations, extending to more than 1km from the smelter, were similar to those found in fine particles in atmospheric dust. The results validate the use of lead isotope signatures for source apportionment of metal and metalloid contaminants transported by atmospheric particulate.
journal_name
Chemospherejournal_title
Chemosphereauthors
Félix OI,Csavina J,Field J,Rine KP,Sáez AE,Betterton EAdoi
10.1016/j.chemosphere.2014.11.057subject
Has Abstractpub_date
2015-03-01 00:00:00pages
219-226eissn
0045-6535issn
1879-1298pii
S0045-6535(14)01380-0journal_volume
122pub_type
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