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| Titel |
Quantitative sampling and analysis of trace elements in atmospheric aerosols: impactor characterization and Synchrotron-XRF mass calibration |
| VerfasserIn |
A. Richard, N. Bukowiecki, P. Lienemann, M. Furger, M. Fierz, M. C. Minguillón, B. Weideli, R. Figi, U. Flechsig, K. Appel, A. S. H. Prévôt, U. Baltensperger |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1867-1381
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Measurement Techniques ; 3, no. 5 ; Nr. 3, no. 5 (2010-10-20), S.1473-1485 |
| Datensatznummer |
250001304
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| Publikation (Nr.) |
 copernicus.org/amt-3-1473-2010.pdf |
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| Zusammenfassung |
| Identification of trace elements in ambient air can add substantial
information to pollution source apportionment studies, although they
do not contribute significantly to emissions in terms of
mass. A method for quantitative size and time-resolved trace element
evaluation in ambient aerosols with a rotating drum impactor and
synchrotron radiation based X-ray fluorescence is presented. The
impactor collection efficiency curves and size segregation
characteristics were investigated in an experiment with oil and salt
particles. Cutoff diameters were determined through the ratio of size
distributions measured with two particle sizers. Furthermore, an
external calibration technique to empirically link fluorescence
intensities to ambient concentrations was developed. Solutions of
elemental standards were applied with an ink-jet printer on thin films
and area concentrations were subsequently evaluated with external wet
chemical methods. These customized and reusable reference standards
enable quantification of different data sets analyzed under varying
experimental conditions. |
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