Assessment of the performance of a tunnel sampler and cascade impactor system for ambient air sampling

Vawda, Y.; Colbeck, I.; Harrison, Roy M.; Nicholson, K.W.

doi:10.1016/0021-8502(92)90325-p

Cited by 11 publications

(1 citation statement)

References 19 publications

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“…The tunnel is directed into the ambient wind by means of a light wind vane and, as a ventilator produces a constant forced air stream inside the tunnel, the linear velocity of the particles in the air can be made exactly the same as the intake velocity in the sampling device. Since isokinetic sampling conditions are set up at the orifice of the impactor probe, 100~ aspiration efficiency from the tunnel air stream into the impactor probe may be assumed for all particle sizes [10].…”

Section: Samplinomentioning

confidence: 99%

Performance of a nuclear microprobe to study giant marine aerosol particles

Injuk¹,

Breitenbach²,

Grieken³

et al. 1994

Mikrochim Acta

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Abstract. The scanning nuclear microprobe analytical facility of the IRMM was used to determine with PIXE major, minor and trace elements in individual giant marine aerosol particles, collected above the North Sea (particle size > 5 #m ~). The instrumentation is briefly described, and the experimental parameters chosen for these analyses are discussed. Elements with atomic numbers Z > 15 could be determined. Detection limits observed under the prevailing experimental conditions reached down to 50 fg in the case of Ti, V or Cr, corresponding to a mass content of 10 #g/g in particles of 15 #m size. Quantitative evaluation of the acquired spectra revealed basically three aerosol types in these samples: sea salt particles, sea salt combined with high contents of S, K and Ca, and particles rich in heavier elements (Ti, Cr, Fe, Ni). The agglomeration of several large particles forming a giant one could be visualised directly through the heterogeneity found in the elemental maps of such a particle.

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Section: Samplinomentioning

confidence: 99%

Performance of a nuclear microprobe to study giant marine aerosol particles

Injuk¹,

Breitenbach²,

Grieken³

et al. 1994

Mikrochim Acta

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EDXRS study of aerosol composition variations in air masses crossing the North Sea

Injuk¹,

Malderen²,

Grieken³

et al. 1993

X-Ray Spectrometry

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X‐ray emission techniques for bulk and individual particle analysis (EDXRF, EPXMA, micro‐PIXE) were combined and applied in atmospheric research on the North Sea area as part of a field‐study on air‐sea exchange processes of particulate matter. The atmospheric loading for a number of elements was determined by EDXRF, yielding bulk concentrations for Mg, Al, Si, S, Cl, K, Ca, Cr, Mn, Fe, Ni, Cu, Zn, Br and Sr. From these EDXRF data, deposition rates were derived and, based on a classical multivariate statistical approach, different aerosol sources were identified. Complementary to this work, EPXMA combined with automated image analysis was applied to individual size‐segregated aerosol particles to determine their inorganic composition, physical size and shape. Also, the first results of micro‐PIXE analyses on individual North Sea aerosol particles, particularly their large‐size fraction, are discussed and compared with the corresponding EPXMA results. In summary, such a joint approach with the use of different x‐ray emission techniques contributed to the resolution of the mixed structure of the lower North Sea troposphere and to the determination of the atmospheric supply of material to the North Sea environment.

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Sampling of Airborne Particulate Matter

Hollander

1995

Airborne Particulate Matter

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Assessment of the performance of a tunnel sampler and cascade impactor system for ambient air sampling

Cited by 11 publications

References 19 publications

Performance of a nuclear microprobe to study giant marine aerosol particles

Performance of a nuclear microprobe to study giant marine aerosol particles

EDXRS study of aerosol composition variations in air masses crossing the North Sea

Sampling of Airborne Particulate Matter

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