Concentration and Potential Sources of Total Gaseous Mercury in a Concentrated Non-Ferrous Metals Smelting Area in Mengzi of China
To investigate concentration and potential sources of total gaseous mercury (TGM) in a concentrated non-ferrous metals smelting area in southwest China, a high temporal resolution automatic mercury meter was used to measure TGM in the environment and the emissions from major sources of Mengzi city....
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MDPI AG
2024-12-01
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| Series: | Atmosphere |
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| Online Access: | https://www.mdpi.com/2073-4433/16/1/8 |
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| author | Xinyu Han Yuqi Xie Haojie Su Wei Du Guixin Du Shihan Deng Jianwu Shi Senlin Tian Ping Ning Feng Xiang Haitao Xie |
| author_facet | Xinyu Han Yuqi Xie Haojie Su Wei Du Guixin Du Shihan Deng Jianwu Shi Senlin Tian Ping Ning Feng Xiang Haitao Xie |
| author_sort | Xinyu Han |
| collection | DOAJ |
| description | To investigate concentration and potential sources of total gaseous mercury (TGM) in a concentrated non-ferrous metals smelting area in southwest China, a high temporal resolution automatic mercury meter was used to measure TGM in the environment and the emissions from major sources of Mengzi city. The average concentration of TGM in urban air was 2.1 ± 3.5 ng·m<sup>−3</sup> with a range of 0.1~61.1 ng·m<sup>−3</sup> over the study period. The highest TGM concentration was in fall (3.3 ± 4.3 ng·m<sup>−3</sup>). The daytime TGM concentration (2.8 ± 3.5 ng·m<sup>−3</sup>) was significantly higher than that in the nighttime (1.6 ± 1.1 ng·m<sup>−3</sup>), which may be attributed to the increased emissions of mercury from the high volume of vehicle activity during the day. To discuss the contributions of local sources and long-range transport, eight pollution events were identified based on the ratio of ΔTGM/ΔCO (Carbon Monoxide), which can be found that local sources are a key contributor to the major TGM pollution events. Concentrations of TGM in flue gases from eight non-ferrous industrial sources were also measured in Mengzi, which were found that the highest TGM emission concentration was up to 4.6 mg·m<sup>−3</sup>. Simultaneously, the concentrations of TGM in ambient air around these industries and Xidu Tunnel were also detected, the concentrations were 1 to 4 times higher than that in the urban air sampling site. Based on the analysis of air mass and PSCF, when northwest wind happened, these emissions of industries and vehicles can be identified as the primary sources of TGM in urban air of Mengzi. |
| format | Article |
| id | doaj-art-7bf99c68ee5043fe9a62b7f766c0446a |
| institution | Kabale University |
| issn | 2073-4433 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Atmosphere |
| spelling | doaj-art-7bf99c68ee5043fe9a62b7f766c0446a2025-01-24T13:21:40ZengMDPI AGAtmosphere2073-44332024-12-01161810.3390/atmos16010008Concentration and Potential Sources of Total Gaseous Mercury in a Concentrated Non-Ferrous Metals Smelting Area in Mengzi of ChinaXinyu Han0Yuqi Xie1Haojie Su2Wei Du3Guixin Du4Shihan Deng5Jianwu Shi6Senlin Tian7Ping Ning8Feng Xiang9Haitao Xie10Faculty of Civil Engineering and Mechanics, Kunming University of Science and Technology, Kunming 650500, ChinaFaculty of Civil Engineering and Mechanics, Kunming University of Science and Technology, Kunming 650500, ChinaFaculty of Civil Engineering and Mechanics, Kunming University of Science and Technology, Kunming 650500, ChinaFaculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, ChinaFaculty of Civil Engineering and Mechanics, Kunming University of Science and Technology, Kunming 650500, ChinaFaculty of Civil Engineering and Mechanics, Kunming University of Science and Technology, Kunming 650500, ChinaFaculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, ChinaFaculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, ChinaFaculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, ChinaYunnan Ecological and Environmental Monitoring Center, Kunming 650032, ChinaYunnan Ecological and Environmental Monitoring Center, Kunming 650032, ChinaTo investigate concentration and potential sources of total gaseous mercury (TGM) in a concentrated non-ferrous metals smelting area in southwest China, a high temporal resolution automatic mercury meter was used to measure TGM in the environment and the emissions from major sources of Mengzi city. The average concentration of TGM in urban air was 2.1 ± 3.5 ng·m<sup>−3</sup> with a range of 0.1~61.1 ng·m<sup>−3</sup> over the study period. The highest TGM concentration was in fall (3.3 ± 4.3 ng·m<sup>−3</sup>). The daytime TGM concentration (2.8 ± 3.5 ng·m<sup>−3</sup>) was significantly higher than that in the nighttime (1.6 ± 1.1 ng·m<sup>−3</sup>), which may be attributed to the increased emissions of mercury from the high volume of vehicle activity during the day. To discuss the contributions of local sources and long-range transport, eight pollution events were identified based on the ratio of ΔTGM/ΔCO (Carbon Monoxide), which can be found that local sources are a key contributor to the major TGM pollution events. Concentrations of TGM in flue gases from eight non-ferrous industrial sources were also measured in Mengzi, which were found that the highest TGM emission concentration was up to 4.6 mg·m<sup>−3</sup>. Simultaneously, the concentrations of TGM in ambient air around these industries and Xidu Tunnel were also detected, the concentrations were 1 to 4 times higher than that in the urban air sampling site. Based on the analysis of air mass and PSCF, when northwest wind happened, these emissions of industries and vehicles can be identified as the primary sources of TGM in urban air of Mengzi.https://www.mdpi.com/2073-4433/16/1/8TGMnon-ferrous metal smeltingΔTGM/ΔCOsource emissionswind direction |
| spellingShingle | Xinyu Han Yuqi Xie Haojie Su Wei Du Guixin Du Shihan Deng Jianwu Shi Senlin Tian Ping Ning Feng Xiang Haitao Xie Concentration and Potential Sources of Total Gaseous Mercury in a Concentrated Non-Ferrous Metals Smelting Area in Mengzi of China Atmosphere TGM non-ferrous metal smelting ΔTGM/ΔCO source emissions wind direction |
| title | Concentration and Potential Sources of Total Gaseous Mercury in a Concentrated Non-Ferrous Metals Smelting Area in Mengzi of China |
| title_full | Concentration and Potential Sources of Total Gaseous Mercury in a Concentrated Non-Ferrous Metals Smelting Area in Mengzi of China |
| title_fullStr | Concentration and Potential Sources of Total Gaseous Mercury in a Concentrated Non-Ferrous Metals Smelting Area in Mengzi of China |
| title_full_unstemmed | Concentration and Potential Sources of Total Gaseous Mercury in a Concentrated Non-Ferrous Metals Smelting Area in Mengzi of China |
| title_short | Concentration and Potential Sources of Total Gaseous Mercury in a Concentrated Non-Ferrous Metals Smelting Area in Mengzi of China |
| title_sort | concentration and potential sources of total gaseous mercury in a concentrated non ferrous metals smelting area in mengzi of china |
| topic | TGM non-ferrous metal smelting ΔTGM/ΔCO source emissions wind direction |
| url | https://www.mdpi.com/2073-4433/16/1/8 |
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