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| Titel |
Effective density of Aquadag and fullerene soot black carbon reference materials used for SP2 calibration |
| VerfasserIn |
M. Gysel, M. Laborde, J. S. Olfert, R. Subramanian, A. J. Gröhn |
| 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 ; 4, no. 12 ; Nr. 4, no. 12 (2011-12-22), S.2851-2858 |
| Datensatznummer |
250002158
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| Publikation (Nr.) |
 copernicus.org/amt-4-2851-2011.pdf |
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| Zusammenfassung |
| The mass and effective density of black carbon (BC) particles generated from
aqueous suspensions of Aquadag and fullerene soot was measured and
parametrized as a function of their mobility diameter. The measurements were
made by two independent research groups by operating a differential mobility
analyser (DMA) in series with an aerosol particle mass analyser (APM) or a
Couette centrifugal particle mass analyser (CPMA). Consistent and
reproducible results were found in this study for different production lots
of Aquadag, indicating that the effective density of these particles is a
stable quantity and largely unaffected by differences in aerosol generation
procedures and suspension treatments. The effective density of fullerene soot
particles from one production lot was also found to be stable and independent
of suspension treatments. Some differences to previous literature data were
observed for both Aquadag and fullerene soot at larger particle diameters.
Knowledge of the exact relationship between mobility diameter and particle
mass is of great importance, as DMAs are commonly used to size-select
particles from BC reference materials for calibration of single particle soot
photometers (SP2), which quantitatively detect the BC mass in single
particles. |
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