|
|
|
| Characteristics and depositional fluxes of heavy metals in aerosol of the Yangtze Estuary |
|
|
|
|
Abstract Atmospheric aerosol at the Qingcaosha Reservoir and Changxing Island, in the Yangtze Estuary, were collected, and its heavy metals measured. Concentrations of PM10were from 109to 197μg/m3. The elemental concentrations followed the order Zn > Cr > Mn > Cu > Ti > Ni > Pb > V. Zn, Cr, Mn, Cu, Ni, and Pb were significantly enriched relative to crustal contributions. The average concentrations of Zn, Cr, Mn, Cu, Ni, and Pb were estimated to be 297, 241, 186, 181, 52, and 32ng/m3. Average daily dry-depositional fluxes to the Yangtze Estuary were estimated to be 0.14, 0.09, 0.08, 0.08, 0.02, and 0.02mg/(m2×d), respectively. Dry deposition accounted for about 25% of the Cu in the Qingcaosha Reservoir.
|
|
Received: 12 October 2011
|
|
|
|
|
|
|
