@article{fdi:010084750,
  title = {{C}ellulose in atmospheric particulate matter at rural and urban sites across {F}rance and {S}witzerland},
  author = {{B}righty, {A}. and {J}acob, {V}. and {U}zu, {G}a{\¨e}lle and {B}orlaza, {L}. and {C}onil, {S}. and {H}ueglin, {C}. and {G}range, {S}. {K}. and {F}avez, {O}. and {T}rebuchon, {C}. and {J}affrezo, {J}. {L}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he spatiotemporal variations in free-cellulose concentrations in atmospheric particles, as a proxy for plant debris, were investigated using an improved protocol with a high-performance liquid chromatography with pulsed amperometric detection ({HPLC}-{PAD}) method. {F}ilter samples were taken from nine sites of varying characteristics across {F}rance and {S}witzerland, with sampling covering all seasons. {C}oncentrations of cellulose, as well as carbonaceous aerosol and other source-specific chemical tracers (e.g. elemental carbon, {EC}; levoglucosan; polyols; trace metals; and glucose), were quantified. {A}nnual mean free-cellulose concentrations within {PM}10 (particulate matter) ranged from 29 +/- 38 ng m(-3) at {B}asel (urban site) to 284 +/- 225 ng m(-3) at {P}ayerne (rural site). {C}oncentrations were considerably higher during episodes, with spikes exceeding 1150 and 2200 ng m(-3) at {P}ayerne and {ANDRA}-{OPE} ({A}gence nationale pour la gestion des dechets radioactifs {O}bservatoire {P}erenne de l'{E}nvironnement; rural site), respectively. {A} clear seasonality, with highest cellulose concentrations during summer and autumn, was observed at all rural and some urban sites. {H}owever, some urban locations exhibited a weakened seasonality. {C}ontributions of cellulose carbon to total organic carbon are moderate on average (0.7 %-5.9 %) but much greater during "episodes", reaching close to 20 % at {P}ayerne. {C}ellulose concentrations correlated poorly between sites, even at ranges of about 10 km, indicating the localised nature of the sources of atmospheric plant debris. {W}ith regards to these sources, correlations between cellulose and typical biogenic chemical tracers (polyols and glucose) were moderate to strong ({R}-s = 0.28-0.78, p < 0.0001) across the nine sites. {S}easonality was strongest at sites with stronger biogenic correlations, suggesting the main source of cellulose arises from biogenic origins. {A} second input to ambient plant debris concentrations was suggested via resuspension of plant matter at several urban sites, due to moderate cellulose correlations with mineral dust tracers, {C}a2+, and {T}i metal ({R}-s = 0.28-0.45, p < 0.007). {N}o correlation was obtained with the biomass burning tracer (levoglucosan), an indication that this is not a source of atmospheric cellulose. {F}inally, an investigation into the interannual variability in atmospheric cellulose across the {G}renoble metropole was completed. {I}t was shown that concentrations and sources of ambient cellulose can vary considerably between years. {A}ll together, these results deeply improve our knowledge on the phenomenology of plant debris within ambient air.},
  keywords = {{FRANCE} ; {SUISSE}},
  booktitle = {},
  journal = {{A}tmospheric {C}hemistry and {P}hysics},
  volume = {22},
  numero = {9},
  pages = {6021--6043},
  ISSN = {1680-7316},
  year = {2022},
  DOI = {10.5194/acp-22-6021-2022},
  URL = {https://www.documentation.ird.fr/hor/fdi:010084750},
}