气候变化领域集成服务门户(CCPortal): Rainwater chemistry in a subtropical high-altitude mountain site, South China: Seasonality, source apportionment and potential factors

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DOI	10.1016/j.atmosenv.2021.118786
	Rainwater chemistry in a subtropical high-altitude mountain site, South China: Seasonality, source apportionment and potential factors
	Li J.; Wu H.; Jiang P.; Fu C.
发表日期	2022
ISSN	1352-2310
卷号	268
英文摘要	Long-term and frequent observation of rainwater chemistry provides an opportunity to explore the evolution of air pollutant emissions and the effectiveness of the emission control measures. This study presents variations in rainwater chemistry, possible sources of air pollutant emissions, and wet deposition fluxes of ionic species in the rainfall samples during 2018–2020 at Mt. Lushan located in South China. Results showed that the annual volume-weighted mean (VWM) pH of rainwater was 5.8. Moreover, the VWM of 87.7% rainwater samples had pH values above 5.6, which indicated that the atmospheric pollution at Mt. Lushan had less effect during the study period. The polytonic nitrate ion (NO3−), the doubly charged positive calcium ion (Ca2+) and the ammonium ion (NH4+) were the dominant ions in rainwater where Ca2+ and NH4+ were the main neutralizing ionic species for rainwater acidity. The highly seasonal variability of ionic concentrations in rainwater was observed among different ionic species, which is closely associated with meteorological conditions and anthropogenic emissions present in the various seasons. Annual wet deposition flux showed an increasing trend during the entire periods. Hence, the wet flux of NO3− (76.3 kg ha−1 yr−1) was three times higher than the annual wet deposition flux of sulfate (SO42−, 21.7 kg ha−1 yr−1), which points to the fact that acid deposition is still a severe environmental issue in the Mt. Lushan region. Positive matrix factorization (PMF) and correlation matrix were used to identify five sources for ionic species, including aging sea salt, fossil fuel combustion, agriculture, dust, and biomass burning. These findings could be helpful in establishing emission control policies to protect and manage pollution control in the eco-environment in South China. © 2021 Elsevier Ltd
关键词	Acid rain Mt. Lushan Neutralization Source identification Wet deposition
语种	英语
scopus关键词	Acid rain; Air pollution; Deposition; Emission control; Factorization; Fossil fuels; Sulfur compounds; Air pollutant emission; Ionic species; Mt lushan; Neutralisation; Rainwater chemistry; Sources identifications; South China; Volume-weighted means; Wet deposition; Wet deposition flux; Ions; ammonia; calcium ion; fossil fuel; nitrate; rain; sodium chloride; sulfate; altitude; atmospheric pollution; concentration (composition); detection method; fossil fuel; rainfall; rainwater; seasonality; source apportionment; subtropical region; acid deposition; acid rain; acidity; agriculture; air pollutant; air pollution; air pollution control; altitude; Article; biomass; chemical analysis; China; combustion; concentration (parameter); controlled study; data analysis; dust; environmental policy; mathematical analysis; meteorology; pH; seasonal variation; wet deposition; China
来源期刊	ATMOSPHERIC ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/248158
作者单位	Geographic Information and Tourism College, Chuzhou University, Chuzhou, China; Key Laboratory of Watershed Geographic Sciences, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, China; College of Forestry, Henan Agriculture University, Zhengzhou, China
推荐引用方式 GB/T 7714	Li J.,Wu H.,Jiang P.,et al. Rainwater chemistry in a subtropical high-altitude mountain site, South China: Seasonality, source apportionment and potential factors[J],2022,268.
APA	Li J.,Wu H.,Jiang P.,&Fu C..(2022).Rainwater chemistry in a subtropical high-altitude mountain site, South China: Seasonality, source apportionment and potential factors.ATMOSPHERIC ENVIRONMENT,268.
MLA	Li J.,et al."Rainwater chemistry in a subtropical high-altitude mountain site, South China: Seasonality, source apportionment and potential factors".ATMOSPHERIC ENVIRONMENT 268(2022).