Potential sources, scavenging processes, and source regions of mercury in the wet deposition of South Korea

Eom, Sangwoo; Lee, Haebum; Kim, Jihee; Park, Kihong; Kim, Young‐Hee; Sheu, Guey Rong; Gay, David A.; Schmeltz, D.; Han, Seunghee

doi:10.1016/j.scitotenv.2020.143934

Cited by 11 publications

(1 citation statement)

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“…The Hg concentrations ranged from n.d. to 211.7 ng L −1 (weigh average of annual: 56.8 ng L −1 ), and from n.d. to 205.7 ng L −1 (weighted average of ann 79.8 ng L −1 ) for the precipitation and the dry deposition, respectively (Figure 2). As T 1 shows, the concentrations of precipitation in metropolises such as Beijing and Shang were one order of magnitude higher than those in rural environments and forests [17 while the average level in Dinghu Mountain was a little higher than that in Southw China [19,20], the United States (USA) [21,22], Republic of Korea [23], and Mexico [ The results indicated that the deposition of Hg was related to the anthropogenic emis sources. Notably, the highest deposition Hg event was observed on July 31th, and so electronic waste disposal industries settled in northeast Guangzhou, Qingyuan, w may be contributing to the upper northeast atmosphere delivering the non-l atmospheric Hg (Figure S3).…”

Section: The Concentration and Seasonal Trends Of Hgmentioning

confidence: 99%

Dry and Wet Deposition Fluxes and Source of Atmospheric Mercury in the Forest in Southeast China

Dong

Kang

Deng³

et al. 2023

Sustainability

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Studying atmospheric mercury (Hg) deposition in a forest system is a key step to understanding Hg biogeochemical cycles. However, observations based on Hg deposition fluxes in worldwide stations under forest ecosystems tend to differ considerably. In this work, a sampling station was set up in Dinghu Mountain to study the atmospheric Hg’s dry and wet deposition in typical forest ecosystems in Southeast China. One hundred and two atmospheric dry and wet deposition samples were collected with an automatic sampler from March 2009 to February 2010, and concentrations of Hg, magnesium (Mg), calcium (Ca), cadmium (Cd), copper (Cu), zinc (Zn), lead (Pb), and chromium (Cr) were detected. The results showed that the annual rainfall weighted average Hg concentration was 56.8 ng L−1, and 79.8 ng L−1 in the dry deposition. The mean total deposition flux was 158.8 μg m−2, and the wet deposition was predominant. The highest and lowest concentrations were detected in the high-temperature rainy season. Generally, the wet deposition flux was notably positively correlated with the rainfall. The source of atmospheric Hg deposition in Dinghu Mountain was analyzed using principal component analysis (PCA). The main source of Hg in precipitation was soil dust, followed by coal and fuel (automobile exhaust). The primary source of Hg in dry deposition was fuel (automobile exhaust), followed by soil dust, which indicates that Dinghu Mountain has been polluted by the anthropogenic sources of Hg.

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