@article{fdi:010085346,
  title = {{N}ine-year trends of {PM}10 sources and oxidative potential in a rural background site in {F}rance},
  author = {{B}orlaza, {L}. {J}. and {W}eber, {S}. and {M}arsal, {A}. and {U}zu, {G}a{\¨e}lle and {J}acob, {V}. and {B}esombes, {J}. {L}. and {C}hatain, {M}. and {C}onil, {S}. and {J}affrezo, {J}. {L}.},
  editor = {},
  language = {{ENG}},
  abstract = {{L}ong-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. {I}n this study, 9-year sampling of {PM}10 (particles with an aerodynamic diameter below 10 mu m) was performed in a rural background site in {F}rance ({O}bservatoire {M}enne de l'{E}nvironnement or {OPE}) from 28 {F}ebruary 2012 to 22 {D}ecember 2020. {T}he 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. {O}xidative 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}). {T}he sources of {OP} were also estimated using multiple linear regression ({MLR}) analysis. {I}n terms of mass contribution, the dominant sources are secondary aerosols (nitrate- and sulfate-rich) associated with long-range transport ({LRT}). {H}owever, in terms of {OP} contributions, the main drivers are traffic, mineral dust, and biomass burning factors. {T}here 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. {T}he 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. {N}evertheless, 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 {E}urope, mainly for urban areas.},
  keywords = {{FRANCE}},
  booktitle = {},
  journal = {{A}tmospheric {C}hemistry and {P}hysics},
  volume = {22},
  numero = {13},
  pages = {8701--8723},
  ISSN = {1680-7316},
  year = {2022},
  DOI = {10.5194/acp-22-8701-2022},
  URL = {https://www.documentation.ird.fr/hor/fdi:010085346},
}