期刊
ATMOSPHERE
卷 13, 期 2, 页码 -出版社
MDPI
DOI: 10.3390/atmos13020168
关键词
particulate matter; biomass burning; potassium ion; meteorological impact; thermal inversion layer
资金
- National Research and Development Agency (ANID, Chile) [FONIS SA17I0212]
- Universidad de Los Lagos [DI R19/20]
- KAKENHI [19KK0263]
- Grants-in-Aid for Scientific Research [19KK0263] Funding Source: KAKEN
This study clarifies the source of PM2.5 in Osorno, Chile by analyzing its chemical composition and comparing it with meteorological conditions. The results indicate that biomass combustion, such as wood burning, is the dominant source of PM2.5. The study also highlights the impact of low temperature, low precipitation, and low wind speed on the formation of a thermal inversion layer.
Over the decades, air pollution has become a serious problem in Osorno, Chile. This study aims to clarify the source of PM2.5 by comprehensively analyzing its chemical composition and comparing it with meteorological conditions. The PM2.5 and filter samples were collected during April 2019-August 2019 using a continuous particulate monitor. The analyses were conducted using Image J software, ion chromatography, and backward trajectory. The ion composition and the PM2.5 were compared. The results on the PM2.5 and potassium (K+) concentrations indicated a correlation factor of 0.93, indicating that biomass combustion, such as wood burning, is the dominant source of PM2.5 in Osorno. High PM2.5 concentrations of over 170 to 1124 mu g/m(3) were observed in low temperature, low precipitation, and low wind speed periods-meteorological conditions contributed to the development of a thermal inversion layer. In addition, correlations of 0.61 to 0.67 were found among the detected ions that are often found in seawater. The backward trajectory analyses showed dominant air mass transport from the South Pacific Ocean, suggesting that part of the detected PM2.5 was derived from the marine environment. Continuous monitoring and mitigation strategies focusing on wood combustion activities are necessary to alleviate the current air pollution problem in Osorno city.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据