DOI: 10.1016/j.atmosenv.2017.12.040
Scopus记录号: 2-s2.0-85040236266
论文题名: Atmospheric ammonia measurements along the coastal lines of Southeastern China: Implications for inorganic nitrogen deposition to coastal waters
作者: Wu S ; -P ; , Dai L ; -H ; , Wei Y ; , Zhu H ; , Zhang Y ; -J ; , Schwab J ; J ; , Yuan C ; -S
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2018
卷: 177 起始页码: 1
结束页码: 11
语种: 英语
英文关键词: Ammonia
; Ammonium
; Nitrate
; Nitrogen deposition
; Xiamen Bay
Scopus关键词: Ammonia
; Ecosystems
; Meteorological problems
; Nitrates
; Nitrogen
; Photosynthesis
; Phytoplankton
; Urban growth
; Ammonium
; Ammonium concentrations
; Atmospheric depositions
; Coastal marine ecosystems
; Nitrate concentration
; Nitrogen deposition
; Particle transformation
; Xiamen Bay
; Barium compounds
; ammonia
; ammonium sulfate
; nitrate
; nitrogen
; rain
; ambient air
; ammonia
; ammonium
; atmospheric chemistry
; atmospheric deposition
; coastal water
; coastal zone
; concentration (composition)
; environmental monitoring
; inorganic nitrogen
; measurement method
; nitrate
; air pollutant
; air pollution control
; air temperature
; Article
; atmosphere
; atmospheric deposition
; biogeochemistry
; boundary layer
; coastal waters
; concentration ratio
; dry deposition
; eutrophication
; falling
; flow rate
; high temperature
; nitrogen deposition
; precipitation
; priority journal
; seashore
; seasonal variation
; spring
; suburban area
; summer
; surface area
; temperature dependence
; urban area
; volatilization
; wet deposition
; winter
; China
; Fujian
; Guangdong
; Taiwan Strait
; Xiamen Bay
Scopus学科分类: Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要: Ambient NH3 concentrations were determined using Ogawa passive samplers along the coastal lines of southeast China from June 2015 to May 2017. Additional monitoring of PM2.5 and precipitation around Xiamen Bay during the period from November 2015 to May 2017 were carried out to estimate atmospheric inorganic nitrogen (IN) deposition to the bay. Distinct seasonal variations of ambient NH3 were observed with summer averages 1.41–5.56 times higher than winter, which agreed well with the seasonal trend of air temperature. Nitrate concentrations (pNO3 -) in PM2.5 were significantly higher than ammonium concentrations (pNH4 +), and both species showed higher concentrations in winter and spring and lower values in summer and fall which were influenced mainly by the monsoon cycle, gas-to-particle transformation process and rain washout. Paired t-testing revealed that no significant differences of pNO3 - and pNH4 + between the urban and suburban sites around the Xiamen Bay. Unlike pNO3 - and pNH4 +, there were no clear seasonal trends for NH4 + and NO3 − concentrations in precipitation samples (wNH4 + and wNO3 -). On average, the deposition of IN consisted of NH3-N (27.4–28.2%) and pNO3 --N (25.9–26.8%), followed by pNH4 +-N (17.0–17.7%), wNH4 +-N (14.5%), wNO3 --N (13.3–13.8%) and NO2-N (0.35–0.46%); and showed distinct seasonal trends with higher values in winter/spring and lower values in summer/fall. In 2016, the total IN deposition was determined to be 36.45 and 35.92 kg N ha−1 at the urban and suburban sites around the Xiamen Bay, respectively. The proportion of IN deposition to total IN loads (terrestrial + atmospheric), varied over the range of 7.1–13.3% depending on the data source of riverine influx. Our observations revealed that the total IN deposition could account for 9.6–25.1% (based on primary productivity over Taiwan Strait) and 1.7–5.3% (based on primary productivity in Guangdong coastal region) of new productivity in Xiamen Bay, respectively. As an important nutrient source, the atmospheric deposition of N could have significant impacts on coastal marine ecosystems. © 2017 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/83004
Appears in Collections: 气候变化事实与影响
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作者单位: Center for Marine Environmental Chemistry and Toxicology, College of Environment and Ecology, Xiamen University, Xiamen, China; State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen, China; Atmospheric Sciences Research Center, University at Albany, SUNY, Albany, United States; Institute of Environmental Engineering, Sun Yat-Sen University, Kaohsiung, Taiwan
Recommended Citation:
Wu S,-P,, Dai L,et al. Atmospheric ammonia measurements along the coastal lines of Southeastern China: Implications for inorganic nitrogen deposition to coastal waters[J]. Atmospheric Environment,2018-01-01,177