Characteristics of Water-soluble Inorganic Ions in Aerosol and Precipitation and their Scavenging Ratios in an Urban Environment in Southwest China
Abstract Daily fine particulate matter (PM2.5) and precipitation samples were collected simultaneously at an urban site in southwest China in four segregated months in 2015 for measuring major water-soluble inorganic ions (WSIIs). Online hourly concentrations of PM10 and PM2.5 were also monitored, w...
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| Format: | Article |
| Language: | English |
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Springer
2020-12-01
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| Series: | Aerosol and Air Quality Research |
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| Online Access: | https://doi.org/10.4209/aaqr.200513 |
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| author | Chuanjie Lin Tingting Huo Fumo Yang Bin Wang Yang Chen Huanbo Wang |
| author_facet | Chuanjie Lin Tingting Huo Fumo Yang Bin Wang Yang Chen Huanbo Wang |
| author_sort | Chuanjie Lin |
| collection | DOAJ |
| description | Abstract Daily fine particulate matter (PM2.5) and precipitation samples were collected simultaneously at an urban site in southwest China in four segregated months in 2015 for measuring major water-soluble inorganic ions (WSIIs). Online hourly concentrations of PM10 and PM2.5 were also monitored, which showed annual mean concentrations of 67.8 and 41.6 µg m−3, respectively. PM2.5 showed the highest concentration in winter and lowest in summer. The annual mean concentration of the total WSIIs was 20.3 µg m−3, accounting for about 48.7% of PM2.5. Among the total WSIIs in ambient PM2.5, SO42− was the predominant component (49.7%), followed by NH4 + (24.1%) and NO3 − (21.4%). NH4 + and SO4 2− were the two most abundant ions in precipitation, followed by Ca2+ and NO3 −. Seasonal patterns of the major inorganic ions in precipitation were similar to those in PM2.5, with the highest concentration in winter and lowest in summer. The mean scavenging ratios were 454, 445, 364, 456, and 394 for SO4 2−, NO3 −, NH4 +, Cl−, and K+, and 116, 353, and 18 for gas SO2, HNO3, and NH3, respectively. The higher scavenging ratios of particulate ions than their gaseous precursors suggest the higher contributions of particles than gases to the total wet deposition. |
| format | Article |
| id | doaj-art-ad602d3564a64f87bbc95785459213c8 |
| institution | Kabale University |
| issn | 1680-8584 2071-1409 |
| language | English |
| publishDate | 2020-12-01 |
| publisher | Springer |
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| series | Aerosol and Air Quality Research |
| spelling | doaj-art-ad602d3564a64f87bbc95785459213c82025-02-09T12:21:02ZengSpringerAerosol and Air Quality Research1680-85842071-14092020-12-0121511310.4209/aaqr.200513Characteristics of Water-soluble Inorganic Ions in Aerosol and Precipitation and their Scavenging Ratios in an Urban Environment in Southwest ChinaChuanjie Lin0Tingting Huo1Fumo Yang2Bin Wang3Yang Chen4Huanbo Wang5School of Environment and Resource, Southwest University of Science and TechnologySchool of Environment and Resource, Southwest University of Science and TechnologyNational Engineering Research Center for Flue Gas Desulfurization, Department of Environmental Science and Engineering, Sichuan UniversitySchool of Environment and Resource, Southwest University of Science and TechnologyChongqing Institute of Green and Intelligent Technology, Chinese Academy of SciencesSchool of Environment and Resource, Southwest University of Science and TechnologyAbstract Daily fine particulate matter (PM2.5) and precipitation samples were collected simultaneously at an urban site in southwest China in four segregated months in 2015 for measuring major water-soluble inorganic ions (WSIIs). Online hourly concentrations of PM10 and PM2.5 were also monitored, which showed annual mean concentrations of 67.8 and 41.6 µg m−3, respectively. PM2.5 showed the highest concentration in winter and lowest in summer. The annual mean concentration of the total WSIIs was 20.3 µg m−3, accounting for about 48.7% of PM2.5. Among the total WSIIs in ambient PM2.5, SO42− was the predominant component (49.7%), followed by NH4 + (24.1%) and NO3 − (21.4%). NH4 + and SO4 2− were the two most abundant ions in precipitation, followed by Ca2+ and NO3 −. Seasonal patterns of the major inorganic ions in precipitation were similar to those in PM2.5, with the highest concentration in winter and lowest in summer. The mean scavenging ratios were 454, 445, 364, 456, and 394 for SO4 2−, NO3 −, NH4 +, Cl−, and K+, and 116, 353, and 18 for gas SO2, HNO3, and NH3, respectively. The higher scavenging ratios of particulate ions than their gaseous precursors suggest the higher contributions of particles than gases to the total wet deposition.https://doi.org/10.4209/aaqr.200513Wet scavengingWater-soluble inorganic ionsPM2.5Precipitation chemistry |
| spellingShingle | Chuanjie Lin Tingting Huo Fumo Yang Bin Wang Yang Chen Huanbo Wang Characteristics of Water-soluble Inorganic Ions in Aerosol and Precipitation and their Scavenging Ratios in an Urban Environment in Southwest China Aerosol and Air Quality Research Wet scavenging Water-soluble inorganic ions PM2.5 Precipitation chemistry |
| title | Characteristics of Water-soluble Inorganic Ions in Aerosol and Precipitation and their Scavenging Ratios in an Urban Environment in Southwest China |
| title_full | Characteristics of Water-soluble Inorganic Ions in Aerosol and Precipitation and their Scavenging Ratios in an Urban Environment in Southwest China |
| title_fullStr | Characteristics of Water-soluble Inorganic Ions in Aerosol and Precipitation and their Scavenging Ratios in an Urban Environment in Southwest China |
| title_full_unstemmed | Characteristics of Water-soluble Inorganic Ions in Aerosol and Precipitation and their Scavenging Ratios in an Urban Environment in Southwest China |
| title_short | Characteristics of Water-soluble Inorganic Ions in Aerosol and Precipitation and their Scavenging Ratios in an Urban Environment in Southwest China |
| title_sort | characteristics of water soluble inorganic ions in aerosol and precipitation and their scavenging ratios in an urban environment in southwest china |
| topic | Wet scavenging Water-soluble inorganic ions PM2.5 Precipitation chemistry |
| url | https://doi.org/10.4209/aaqr.200513 |
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