Recognizing Dew as an Indicator and an Improver of Near-Surface Air Quality
The relationship between dew and airborne particles is important in urban ecosystems, but the capability of dew to remove airborne particles remains unclear. During 2015 in Changchun, China, 74 dew and particle samples were collected simultaneously to investigate their chemical characteristics under...
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Wiley
2017-01-01
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| Series: | Advances in Meteorology |
| Online Access: | http://dx.doi.org/10.1155/2017/3514743 |
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| author | Yingying Xu Xinyue Zhu |
| author_facet | Yingying Xu Xinyue Zhu |
| author_sort | Yingying Xu |
| collection | DOAJ |
| description | The relationship between dew and airborne particles is important in urban ecosystems, but the capability of dew to remove airborne particles remains unclear. During 2015 in Changchun, China, 74 dew and particle samples were collected simultaneously to investigate their chemical characteristics under normal, fog, and haze conditions. Analyses included measuring total dissolved solids, total suspended particulates, PM2.5 and PM10 concentrations, major cations (NH4+, Na+, K+, Ca2+, and Mg2+), major anions (F−, Cl−, SO42-, and NO3-), and organic and elemental carbon. Results showed that air quality deteriorated during haze but improved in fog. The particle size distributions, major cations, and carbonaceous species documented in the dew and airborne particles demonstrated consistent synchronous patterns with values descending in the order haze > normal > fog conditions. We found that dew is a good indicator of near-surface air quality. Specifically, its water-soluble ions and carbonaceous species could be used to distinguish emission sources and to identify the presence of secondary organic carbon. Dew is more effective at removing airborne particles in normal weather than in haze or fog conditions; PM2.5 removal rates were 21.5%, 15.2%, and 13.7% on normal, foggy, and hazy days, respectively. Dew condensation processes reduce concentrations of gaseous and particulate pollutants in the near-surface layer. |
| format | Article |
| id | doaj-art-ffe0055fc20743daae5c697768ab0224 |
| institution | Kabale University |
| issn | 1687-9309 1687-9317 |
| language | English |
| publishDate | 2017-01-01 |
| publisher | Wiley |
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| series | Advances in Meteorology |
| spelling | doaj-art-ffe0055fc20743daae5c697768ab02242025-02-03T01:07:29ZengWileyAdvances in Meteorology1687-93091687-93172017-01-01201710.1155/2017/35147433514743Recognizing Dew as an Indicator and an Improver of Near-Surface Air QualityYingying Xu0Xinyue Zhu1Key Laboratory of Songliao Aquatic Environment, Ministry of Education, Jilin Jianzhu University, Xincheng St., Dist. 5088, Changchun 130118, ChinaKey Laboratory of Songliao Aquatic Environment, Ministry of Education, Jilin Jianzhu University, Xincheng St., Dist. 5088, Changchun 130118, ChinaThe relationship between dew and airborne particles is important in urban ecosystems, but the capability of dew to remove airborne particles remains unclear. During 2015 in Changchun, China, 74 dew and particle samples were collected simultaneously to investigate their chemical characteristics under normal, fog, and haze conditions. Analyses included measuring total dissolved solids, total suspended particulates, PM2.5 and PM10 concentrations, major cations (NH4+, Na+, K+, Ca2+, and Mg2+), major anions (F−, Cl−, SO42-, and NO3-), and organic and elemental carbon. Results showed that air quality deteriorated during haze but improved in fog. The particle size distributions, major cations, and carbonaceous species documented in the dew and airborne particles demonstrated consistent synchronous patterns with values descending in the order haze > normal > fog conditions. We found that dew is a good indicator of near-surface air quality. Specifically, its water-soluble ions and carbonaceous species could be used to distinguish emission sources and to identify the presence of secondary organic carbon. Dew is more effective at removing airborne particles in normal weather than in haze or fog conditions; PM2.5 removal rates were 21.5%, 15.2%, and 13.7% on normal, foggy, and hazy days, respectively. Dew condensation processes reduce concentrations of gaseous and particulate pollutants in the near-surface layer.http://dx.doi.org/10.1155/2017/3514743 |
| spellingShingle | Yingying Xu Xinyue Zhu Recognizing Dew as an Indicator and an Improver of Near-Surface Air Quality Advances in Meteorology |
| title | Recognizing Dew as an Indicator and an Improver of Near-Surface Air Quality |
| title_full | Recognizing Dew as an Indicator and an Improver of Near-Surface Air Quality |
| title_fullStr | Recognizing Dew as an Indicator and an Improver of Near-Surface Air Quality |
| title_full_unstemmed | Recognizing Dew as an Indicator and an Improver of Near-Surface Air Quality |
| title_short | Recognizing Dew as an Indicator and an Improver of Near-Surface Air Quality |
| title_sort | recognizing dew as an indicator and an improver of near surface air quality |
| url | http://dx.doi.org/10.1155/2017/3514743 |
| work_keys_str_mv | AT yingyingxu recognizingdewasanindicatorandanimproverofnearsurfaceairquality AT xinyuezhu recognizingdewasanindicatorandanimproverofnearsurfaceairquality |