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Samontha, Atitaya; Waiyawat, Weerawan; Shiowatana, Juwadee; McLaren, R. G.

doi:10.2306/scienceasia1513-1874.2007.33.421

Cited by 6 publications

(1 citation statement)

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“…And dry deposition of atmospheric PM is a potentially important source of pollutants on the surfaces of water bodies, soils, or plants [107][108][109]. Wet deposition is a precipitation-induced process involving the binding of PM to water droplets in and under clouds [110,111]. During precipitation, fine particles of anthropogenic sources get wiped away due to nucleation where aerosols or droplets get in the way.…”

Section: Trace Metals In the Atmospherementioning

confidence: 99%

Emissions and Atmospheric Dry and Wet Deposition of Trace Metals from Natural and Anthropogenic Sources in Mainland China

Jiang,

Dong,

Han

et al. 2024

Atmosphere

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Trace metals from natural and anthropogenic sources impact the atmospheric environment and enter the soil through dry and wet atmospheric deposition, ultimately affecting human health. In this study, we established an emission inventory of Pb, As, Cr, and Cd in East Asia (80° E–140° E, 15° N–50° N) for the year 2017, including dust and anthropogenic sources from both land and marine. We modified the Community Multiscale Air Quality (CMAQ) model to provide gridded data on concentrations, as well as dry and wet atmospheric deposition fluxes of metals, with a focus on mainland China. The emissions of Pb, As, Cr, and Cd in East Asia were 19,253, 3415, 3332, and 9379 tons, respectively, in 2017, with 55%, 69%, 25%, and 58% distributed in the fine mode. The spatial distribution of atmospheric concentrations and dry deposition of trace metals was similar to that of emissions, while the spatial distribution of precipitation-related wet deposition was further east and greater in the south than in the north. In mainland China, the average bulk-deposition fluxes of Pb, As, Cr, and Cd were 1036.5, 170.3, 465.9, and 185.0 μg·m−2·year−1, respectively. Our study provides gridded data on trace metals in mainland China, which can be used for assessing air quality, human exposure risks, and metal inputs to soils.

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