气候变化领域集成服务门户(CCPortal): Nine-year trends of PM10 sources and oxidative potential in a rural background site in France

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DOI	10.5194/acp-22-8701-2022
	Nine-year trends of PM10 sources and oxidative potential in a rural background site in France
	Borlaza, Lucille Joanna; Weber, Samuel; Marsal, Anouk; Uzu, Gaelle; Jacob, Veronique; Besombes, Jean-Luc; Chatain, Melodie; Conil, Sebastien; Jaffrezo, Jean-Luc
发表日期	2022
ISSN	1680-7316
EISSN	1680-7324
起始页码	8701
结束页码	8723
卷号	22 期号:13 页码:23
英文摘要	Long-term monitoring at sites with relatively low particulate pollution could provide an opportunity to identify changes in pollutant concentration and potential effects of current air quality policies. In this study, 9-year sampling of PM10 (particles with an aerodynamic diameter below 10 mu m) was performed in a rural background site in France (Observatoire Menne de l'Environnement or OPE) from 28 February 2012 to 22 December 2020. The positive matrix factorization (PMF) method was used to apportion sources of PME) based on quantified chemical constituents and specific chemical tracers analysed on collected filters. Oxidative potential (OP), an emerging health metric that measures PM capability to potentially cause anti-oxidant imbalance in the lung, was also measured using two acellular assays: dithiothreitol (DTT) and ascorbic acid (AA). The sources of OP were also estimated using multiple linear regression (MLR) analysis. In terms of mass contribution, the dominant sources are secondary aerosols (nitrate- and sulfate-rich) associated with long-range transport (LRT). However, in terms of OP contributions, the main drivers are traffic, mineral dust, and biomass burning factors. There is also some OP contribution apportioned to the sulfate- and nitrate-rich sources influenced by processes and ageing during LRT that could have encouraged mixing with other anthropogenic sources. The study indicates much lower OP values than in urban areas. A substantial decrease (58 % reduction from the year 2012 to 2020) in the mass contributions from the traffic factor was found, even though this is not clearly reflected in its OP contribution. Nevertheless, the findings in this long-term study at the OPE site could indicate effectiveness of implemented emission control policies, as also seen in other long-term studies conducted in Europe, mainly for urban areas.
学科领域	Environmental Sciences; Meteorology & Atmospheric Sciences
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000821138800001
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/273924
作者单位	Centre National de la Recherche Scientifique (CNRS); CNRS - National Institute for Earth Sciences & Astronomy (INSU); Communaute Universite Grenoble Alpes; UDICE-French Research Universities; Universite Grenoble Alpes (UGA); Institut de Recherche pour le Developpement (IRD); Centre National de la Recherche Scientifique (CNRS)
推荐引用方式 GB/T 7714	Borlaza, Lucille Joanna,Weber, Samuel,Marsal, Anouk,et al. Nine-year trends of PM10 sources and oxidative potential in a rural background site in France[J],2022,22(13):23.
APA	Borlaza, Lucille Joanna.,Weber, Samuel.,Marsal, Anouk.,Uzu, Gaelle.,Jacob, Veronique.,...&Jaffrezo, Jean-Luc.(2022).Nine-year trends of PM10 sources and oxidative potential in a rural background site in France.ATMOSPHERIC CHEMISTRY AND PHYSICS,22(13),23.
MLA	Borlaza, Lucille Joanna,et al."Nine-year trends of PM10 sources and oxidative potential in a rural background site in France".ATMOSPHERIC CHEMISTRY AND PHYSICS 22.13(2022):23.