@article{fdi:010083820,
  title = {{C}ompositional data analysis ({C}o{DA}) as a tool to evaluate a new low-cost settling-based {PM}10 sampling head in a desert dust source region},
  author = {{X}u-{Y}ang, {Y}. {J}. {J}. and {L}osno, {R}. and {M}onna, {F}. and {R}ajot, {J}ean-{L}ouis and {L}abiadh, {M}. and {B}ergametti, {G}. and {M}articorena, {B}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}his paper presents a new sampling head design and the method used to evaluate it. {T}he elemental composition of aerosols collected by two different sampling devices in a semi-arid region of {T}unisia is compared by means of compositional perturbation vectors and biplots. {T}his set of underused mathematical tools belongs to a family of statistics created specifically to deal with compositional data. {T}he two sampling devices operate at a flow rate in the range of 1 m(3) h(-1), with a cut-off diameter of 10 mu m. {T}he first device is a low-cost laboratory-made system, where the largest particles are removed by gravitational settling in a vertical tube. {T}his new system will be compared to the second device, a brand-new standard commercial {PM}10 sampling head, where size segregation is achieved by particle impaction on a metal surface. {A} total of 44 elements (including rare earth elements, {REE}s, together with {A}l, {A}s, {B}a, {B}e, {C}a, {C}d, {C}o, {C}r, {C}u, {F}e, {K}, {L}i, {M}g, {M}n, {M}o, {N}a, {N}i, {P}, {P}b, {R}b, {S}, {S}c, {S}e, {S}r, {T}i, {T}l, {U}, {V}, {Z}n, and {Z}r) were analysed in 16 paired samples, collected during a 2-week field campaign in {T}unisian dry lands, close to source areas, with high levels of large particles. {T}he contrasting meteorological conditions encountered during the field campaign allowed a broad range of aerosol compositions to be collected, with very different aerosol mass concentrations. {T}he compositional data analysis ({C}o{DA}) tools show that no compositional differences were observed between samples collected simultaneously by the two devices. {T}he mass concentration of the particles collected was estimated through chemical analysis. {R}esults for the two sampling devices were very similar to those obtained from an online aerosol weighing system, {FLOM} (tapered element oscillating microbalance), installed next to them. {T}hese results suggest that the commercial {PM}10 impactor head can therefore be replaced by the decanter, without any measurable bias, for the determination of chemical composition and for further assessment of {PM}10 concentrations in source regions.},
  keywords = {{TUNISIE} ; {ZONE} {ARIDE} ; {MEDENINE}},
  booktitle = {},
  journal = {{A}tmospheric {M}easurement {T}echniques},
  volume = {14},
  numero = {12},
  pages = {7657--7680},
  ISSN = {1867-1381},
  year = {2021},
  DOI = {10.5194/amt-14-7657-2021},
  URL = {https://www.documentation.ird.fr/hor/fdi:010083820},
}