Speciated atmospheric mercury at the Waliguan Global Atmosphere Watch station in the northeastern Tibetan Plateau: implication of dust-related sources for particulate bound mercury
<p>To understand the ambient levels and sources of atmospheric mercury (Hg) in the Tibetan Plateau, a full-year continuous measurement of speciated atmospheric mercury was conducted at the Waliguan (WLG) Baseline Observatory (3816 m a.s.l.) from May 2012 to April 2013. Mean concentrations (<...
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2021-10-01
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| Series: | Atmospheric Chemistry and Physics |
| Online Access: | https://acp.copernicus.org/articles/21/15847/2021/acp-21-15847-2021.pdf |
| _version_ | 1818837655266263040 |
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| author | H. Zhang X. Fu X. Fu B. Yu B. Li P. Liu G. Zhang L. Zhang X. Feng X. Feng X. Feng |
| author_facet | H. Zhang X. Fu X. Fu B. Yu B. Li P. Liu G. Zhang L. Zhang X. Feng X. Feng X. Feng |
| author_sort | H. Zhang |
| collection | DOAJ |
| description | <p>To understand the ambient levels and sources of atmospheric mercury (Hg) in
the Tibetan Plateau, a full-year continuous measurement of speciated
atmospheric mercury was conducted at the Waliguan (WLG) Baseline Observatory
(3816 m a.s.l.) from May 2012 to April 2013. Mean concentrations (<span class="inline-formula">±</span> 1 SD) of gaseous elemental mercury (GEM), gaseous oxidized mercury (GOM) and
particulate bound mercury (PBM) during the whole study period were <span class="inline-formula">1.90±0.80</span> ng m<span class="inline-formula"><sup>−3</sup></span>, <span class="inline-formula">12.0±10.6</span> and <span class="inline-formula">65.4±63.2</span> pg m<span class="inline-formula"><sup>−3</sup></span>, respectively. Seasonal variations of GEM were very small,
while those of PBM were quite large with mean values being 4 times higher
in the cold (<span class="inline-formula">102.3±66.7</span> pg m<span class="inline-formula"><sup>−3</sup></span>) than warm (<span class="inline-formula">22.8±14.6</span> pg m<span class="inline-formula"><sup>−3</sup></span>) season. Anthropogenic emissions to the east of the Tibetan Plateau
contributed significantly to GEM pollution at WLG, while dust particles
originating from desert and Gobi regions in Xinjiang province and the Tibetan
Plateau to the west of WLG were responsible for PBM pollution at WLG. This
finding is also supported by the significant positive correlation between
daily PBM concentration and daily cumulative absorbing aerosol index (AAI)
in air masses transported during the preceding 2 d.</p> |
| first_indexed | 2024-12-19T03:25:57Z |
| format | Article |
| id | doaj.art-1cbc53627e8c472fa163c7fc192780f5 |
| institution | Directory Open Access Journal |
| issn | 1680-7316 1680-7324 |
| language | English |
| last_indexed | 2024-12-19T03:25:57Z |
| publishDate | 2021-10-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Atmospheric Chemistry and Physics |
| spelling | doaj.art-1cbc53627e8c472fa163c7fc192780f52022-12-21T20:37:38ZengCopernicus PublicationsAtmospheric Chemistry and Physics1680-73161680-73242021-10-0121158471585910.5194/acp-21-15847-2021Speciated atmospheric mercury at the Waliguan Global Atmosphere Watch station in the northeastern Tibetan Plateau: implication of dust-related sources for particulate bound mercuryH. Zhang0X. Fu1X. Fu2B. Yu3B. Li4P. Liu5G. Zhang6L. Zhang7X. Feng8X. Feng9X. Feng10State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, 99 Lincheng West Road, Guiyang, 550081, ChinaState Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, 99 Lincheng West Road, Guiyang, 550081, ChinaCAS Center for Excellence in Quaternary Science and Global Change, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, 710061, ChinaState Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, ChinaChina Global Atmosphere Watch Baseline Observatory, Qinghai Meteorological Bureau, Xining, 810001, ChinaChina Global Atmosphere Watch Baseline Observatory, Qinghai Meteorological Bureau, Xining, 810001, ChinaChina Global Atmosphere Watch Baseline Observatory, Qinghai Meteorological Bureau, Xining, 810001, ChinaAir Quality Research Division, Science and Technology Branch, Environment and Climate Change Canada, Toronto, M3H5T4, CanadaState Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, 99 Lincheng West Road, Guiyang, 550081, ChinaCAS Center for Excellence in Quaternary Science and Global Change, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, 710061, ChinaUniversity of Chinese Academy of Sciences, Beijing, 100049, China<p>To understand the ambient levels and sources of atmospheric mercury (Hg) in the Tibetan Plateau, a full-year continuous measurement of speciated atmospheric mercury was conducted at the Waliguan (WLG) Baseline Observatory (3816 m a.s.l.) from May 2012 to April 2013. Mean concentrations (<span class="inline-formula">±</span> 1 SD) of gaseous elemental mercury (GEM), gaseous oxidized mercury (GOM) and particulate bound mercury (PBM) during the whole study period were <span class="inline-formula">1.90±0.80</span> ng m<span class="inline-formula"><sup>−3</sup></span>, <span class="inline-formula">12.0±10.6</span> and <span class="inline-formula">65.4±63.2</span> pg m<span class="inline-formula"><sup>−3</sup></span>, respectively. Seasonal variations of GEM were very small, while those of PBM were quite large with mean values being 4 times higher in the cold (<span class="inline-formula">102.3±66.7</span> pg m<span class="inline-formula"><sup>−3</sup></span>) than warm (<span class="inline-formula">22.8±14.6</span> pg m<span class="inline-formula"><sup>−3</sup></span>) season. Anthropogenic emissions to the east of the Tibetan Plateau contributed significantly to GEM pollution at WLG, while dust particles originating from desert and Gobi regions in Xinjiang province and the Tibetan Plateau to the west of WLG were responsible for PBM pollution at WLG. This finding is also supported by the significant positive correlation between daily PBM concentration and daily cumulative absorbing aerosol index (AAI) in air masses transported during the preceding 2 d.</p>https://acp.copernicus.org/articles/21/15847/2021/acp-21-15847-2021.pdf |
| spellingShingle | H. Zhang X. Fu X. Fu B. Yu B. Li P. Liu G. Zhang L. Zhang X. Feng X. Feng X. Feng Speciated atmospheric mercury at the Waliguan Global Atmosphere Watch station in the northeastern Tibetan Plateau: implication of dust-related sources for particulate bound mercury Atmospheric Chemistry and Physics |
| title | Speciated atmospheric mercury at the Waliguan Global Atmosphere Watch station in the northeastern Tibetan Plateau: implication of dust-related sources for particulate bound mercury |
| title_full | Speciated atmospheric mercury at the Waliguan Global Atmosphere Watch station in the northeastern Tibetan Plateau: implication of dust-related sources for particulate bound mercury |
| title_fullStr | Speciated atmospheric mercury at the Waliguan Global Atmosphere Watch station in the northeastern Tibetan Plateau: implication of dust-related sources for particulate bound mercury |
| title_full_unstemmed | Speciated atmospheric mercury at the Waliguan Global Atmosphere Watch station in the northeastern Tibetan Plateau: implication of dust-related sources for particulate bound mercury |
| title_short | Speciated atmospheric mercury at the Waliguan Global Atmosphere Watch station in the northeastern Tibetan Plateau: implication of dust-related sources for particulate bound mercury |
| title_sort | speciated atmospheric mercury at the waliguan global atmosphere watch station in the northeastern tibetan plateau implication of dust related sources for particulate bound mercury |
| url | https://acp.copernicus.org/articles/21/15847/2021/acp-21-15847-2021.pdf |
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