Atmospheric Wet Deposition of PCDD/Fs in the Ambient Air
Abstract Wet deposition is an important mechanism for removing air pollutants from the atmosphere. The total PCDD/Fs-WHO2005-TEQ wet deposition from 2018–2020 was investigated for Beijing and Tianjin City in this study. In addition, the gas-particle partitioning of wet deposition, the total PCDD/Fs-...
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| Format: | Article |
| Language: | English |
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Springer
2021-05-01
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| Series: | Aerosol and Air Quality Research |
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| Online Access: | https://doi.org/10.4209/aaqr.210096 |
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| author | Xueying Tian Kangping Cui Hwey-Lin Sheu Yen-Kung Hsieh Fanxuan Yu |
| author_facet | Xueying Tian Kangping Cui Hwey-Lin Sheu Yen-Kung Hsieh Fanxuan Yu |
| author_sort | Xueying Tian |
| collection | DOAJ |
| description | Abstract Wet deposition is an important mechanism for removing air pollutants from the atmosphere. The total PCDD/Fs-WHO2005-TEQ wet deposition from 2018–2020 was investigated for Beijing and Tianjin City in this study. In addition, the gas-particle partitioning of wet deposition, the total PCDD/Fs-WHO2005-TEQ concentrations in the rain, the PM2.5-bound total PCDD/Fs-WHO2005-TEQ content, and the PM2.5 concentration were also studied for Beijing and Tianjin City, respectively. Between 2018 to 2020, as a whole, the average seasonal variations in PCDD/F wet deposition fluxes in spring, summer, fall, and winter were 50.50, 41.47, 23.03 and 16.76 pg WHO2005-TEQ m–2 month–1, respectively, while in Tianjin, they were 35.30, 42.40, 13.37, and 14.77 pg WHO2005-TEQ m–2 month–1, respectively. Because the two cities have more rainfall in spring and summer than they do in fall and winter, rainfall has a significant influence on the wet deposition flux. In regard to PCDD/Fs-WHO2005-TEQ in the rain, in Beijing, the average total PCDD/Fs-WHO2005-TEQ concentration in the rain in spring, summer, fall, and winter were 1.70, 0.39, 1.42, and 1.52 pg WHO2005-TEQ L–1, respectively, while those in Tianjin, were 1.73, 0.42, 1.35, and 1.88 pg WHO2005-TEQ L–1, respectively. The above results show that the total PCDD/Fs-WHO2005-TEQ concentrations in the rain are significantly lower in summer, which is mainly due to the fact that in summer, the total PCDD/Fs-WHO2005-TEQ concentrations in the air are lower, and the proportion of the gas phase is increased. When the total PCDD/Fs-WHO2005-TEQ concentrations in the air are washed away by a heavy rainfall, the PCDD/F concentrations are diluted. |
| format | Article |
| id | doaj-art-9137745026334426aefc1ec20c82c42f |
| institution | Kabale University |
| issn | 1680-8584 2071-1409 |
| language | English |
| publishDate | 2021-05-01 |
| publisher | Springer |
| record_format | Article |
| series | Aerosol and Air Quality Research |
| spelling | doaj-art-9137745026334426aefc1ec20c82c42f2025-02-09T12:19:49ZengSpringerAerosol and Air Quality Research1680-85842071-14092021-05-0121611610.4209/aaqr.210096Atmospheric Wet Deposition of PCDD/Fs in the Ambient AirXueying Tian0Kangping Cui1Hwey-Lin Sheu2Yen-Kung Hsieh3Fanxuan Yu4School of Resources and Environmental Engineering, Hefei University of TechnologySchool of Resources and Environmental Engineering, Hefei University of TechnologyDepartment of Environmental Engineering, Kun Shan UniversityMarine Ecology and Conservation Research Center, National Academy of Marine ResearchSchool of Resources and Environmental Engineering, Hefei University of TechnologyAbstract Wet deposition is an important mechanism for removing air pollutants from the atmosphere. The total PCDD/Fs-WHO2005-TEQ wet deposition from 2018–2020 was investigated for Beijing and Tianjin City in this study. In addition, the gas-particle partitioning of wet deposition, the total PCDD/Fs-WHO2005-TEQ concentrations in the rain, the PM2.5-bound total PCDD/Fs-WHO2005-TEQ content, and the PM2.5 concentration were also studied for Beijing and Tianjin City, respectively. Between 2018 to 2020, as a whole, the average seasonal variations in PCDD/F wet deposition fluxes in spring, summer, fall, and winter were 50.50, 41.47, 23.03 and 16.76 pg WHO2005-TEQ m–2 month–1, respectively, while in Tianjin, they were 35.30, 42.40, 13.37, and 14.77 pg WHO2005-TEQ m–2 month–1, respectively. Because the two cities have more rainfall in spring and summer than they do in fall and winter, rainfall has a significant influence on the wet deposition flux. In regard to PCDD/Fs-WHO2005-TEQ in the rain, in Beijing, the average total PCDD/Fs-WHO2005-TEQ concentration in the rain in spring, summer, fall, and winter were 1.70, 0.39, 1.42, and 1.52 pg WHO2005-TEQ L–1, respectively, while those in Tianjin, were 1.73, 0.42, 1.35, and 1.88 pg WHO2005-TEQ L–1, respectively. The above results show that the total PCDD/Fs-WHO2005-TEQ concentrations in the rain are significantly lower in summer, which is mainly due to the fact that in summer, the total PCDD/Fs-WHO2005-TEQ concentrations in the air are lower, and the proportion of the gas phase is increased. When the total PCDD/Fs-WHO2005-TEQ concentrations in the air are washed away by a heavy rainfall, the PCDD/F concentrations are diluted.https://doi.org/10.4209/aaqr.210096PM2.5Wet depositionPCDD/FsBeijingTianjin |
| spellingShingle | Xueying Tian Kangping Cui Hwey-Lin Sheu Yen-Kung Hsieh Fanxuan Yu Atmospheric Wet Deposition of PCDD/Fs in the Ambient Air Aerosol and Air Quality Research PM2.5 Wet deposition PCDD/Fs Beijing Tianjin |
| title | Atmospheric Wet Deposition of PCDD/Fs in the Ambient Air |
| title_full | Atmospheric Wet Deposition of PCDD/Fs in the Ambient Air |
| title_fullStr | Atmospheric Wet Deposition of PCDD/Fs in the Ambient Air |
| title_full_unstemmed | Atmospheric Wet Deposition of PCDD/Fs in the Ambient Air |
| title_short | Atmospheric Wet Deposition of PCDD/Fs in the Ambient Air |
| title_sort | atmospheric wet deposition of pcdd fs in the ambient air |
| topic | PM2.5 Wet deposition PCDD/Fs Beijing Tianjin |
| url | https://doi.org/10.4209/aaqr.210096 |
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