TY  - CHAP
A1  - Helsper, Christoph
A1  - Fissan, H. J.
A1  - Franzen, H.
ED  - Benarie, Michel M.
T1  - Particle Size Distributions of Combustion Aerosols
T2  - Atmospheric Pollution 1978 : Proceedings of the 13th International Colloquium; 25-28 April 1978; Paris, France; Edited by Michel M. Benarie
N2  - It has been observed that carcinogenic polycyclic aromatic hydrocarbons (PAH) are present in the atmosphere. Combustion processes are considered the most important sources for PAH. Among these, the burning of coal produces the highest emission, but in cities with high traffic density and low meteorological exchange activities, vehicle emissions determine the immission situation, especially in narrow streets. For estimating the potential health effects caused by PAH, it is sufficient to characterize the emission of PAH with respect to their physical state, concentrations, and, as far as the particulate phase is concerned, size distribution. The size distribution is important for transport phenomena, inhalation, and deposition in the respiratory tract. These parameters mainly depend on the combustion system, on system operating conditions, on the exhaust system, and on exhaust cooling conditions. At exhaust-gas temperatures in the range of ambient air temperatures, almost the whole emission of PAH is made up of particulate matter.
Y1  - 1978
SN  - 0-444-41691-9
U6  - http://dx.doi.org/10.1016/S0166-1116(08)71583-8
SP  - 263
EP  - 266
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - BOOK
A1  - Helsper, Christoph
A1  - Fißan, Heinz
A1  - Ahrens, Werner
T1  - Entwicklung eines Meßsystems zur direkten Bestimmung der Partikelgrößenverteilung von Aerosolen aus Verbrennungsvorgängen / Fißan, Heinz; Helsper, Christoph; Ahrens, Werner
Y1  - 1979
SN  - 3-531-02827-8
N1  - Forschungsberichte des Landes Nordrhein Westfalen, Nr. 2827
PB  - Westdeutscher Verl.
CY  - Opladen
ER  - 
TY  - JOUR
A1  - Helsper, Christoph
T1  - Evaluation of Particle Size Distributions by Means of Particle Counters / Fißan, H. J. ; Helsper, C.
JF  - Proceedings of the First Workshop of Particulate Control : 16. - 17. March 1978, Kernforschung-sanlage Jülich GmbH / prepared by U.S. Environmental Protection Agency, Off. of Research and Development, Washington, D.C, 1979,
Y1  - 1979
N1  - Workshop of Particulate Control ; (1, 1978, Jülich); Berichte der Kernforschungsanlage Jülich Conferences ; 28
PB  - Zentralbibliothek d. Kernforschungsanlage Jülich [in Komm.]
CY  - Jülich
ER  - 
TY  - BOOK
A1  - Helsper, Christoph
A1  - Beßling, Harro
A1  - Kiock, R.
A1  - Fißan, H. J.
T1  - Experimentelle Untersuchung der Partikelanzahlkonzentration im Windkanal für den Einsatz von laseranemometrischen Verfahren / Beßling, Harro; Kiock, R.; Helsper, C.; Fißan, H. J.
Y1  - 1979
N1  - Deutsche Forschungs- und Versuchsanstalt für Luft- und Raumfahrt (Köln). Forschungsbericht. 79-28.
PB  - DFVLR
CY  - Köln
ER  - 
TY  - JOUR
A1  - Helsper, Christoph
A1  - Fißan, H. J.
T1  - Numerical Simulation Studies and Data Reduction for Size Classifying Measurement Techniques / Fißan, H. J.; Helsper, C.
JF  - Aerosols in science, medicine and technology : conference / Gesellschaft für Aerosolforschung 7. 1979.
Y1  - 1979
SP  - 199
EP  - 205
ER  - 
TY  - JOUR
A1  - Helsper, Christoph
A1  - Fißan, H. J.
T1  - Numerical Simulation Studies and Data Reduction for Size Classifying Measurement Techniques / Fißan, H. J.; Helsper, C.
JF  - Advances in Particle Sampling and Measurement: Proceedings, Daytona Beach, EPA 600/9 80 004, 1980
Y1  - 1980
N1  - Advances in Particle Sampling and Measurement ; (1979.10. : ; Daytona Beach/Fla.)
PB  - National Technical Information Service
CY  - Springfield, Va.
ER  - 
TY  - JOUR
A1  - Helsper, Christoph
A1  - Fißan, H. J.
A1  - Muggli, J.
A1  - Scheidweiler, A.
T1  - Particle Number Distributions of Aerosols from Test Fires
JF  - Journal of Aerosol Science. 11 (1980), H. 5-6
Y1  - 1980
SN  - 0021-8502
SP  - 439
EP  - 446
ER  - 
TY  - JOUR
A1  - Helsper, Christoph
A1  - Fißan, H. J.
T1  - Response Characteristic of a Polytec HC-15 Optical Particle Counter
JF  - Aerosols in science, medicine and technology : Physical and chemical properties of aerosols : Association for Aerosol Research: annual conference. 1980 : Gesellschaft für Aerosolforschung: annual conference. 1980 : Aerosols in science, medicine and technology : Physical and chemical properties of aerosols : Associa-tion for Aerosol Research: annual conference. 1980 : Gesellschaft für Aerosolforschung: annual conference. 1980 : Schmallenberg, 22.10.80 - 24.10.80
Y1  - 1981
N1  - Journal of aerosol science. Volume 0012 ; no 003
SP  - 287
EP  - 292
PB  - Pergamon Pr.
CY  - Oxford
ER  - 
TY  - BOOK
A1  - Helsper, Christoph
T1  - Bestimmung, Simulation und Korrektur des nichtidealen Übertragungsverhaltens klassifizierender Aerosolmeßverfahren
Y1  - 1981
N1  - Duisburg, Univ.-Gesamthochsch., Diss., 1981
PB  - Univ.-Gesamthochsch
CY  - Duisburg
ER  - 
TY  - JOUR
A1  - Helsper, Christoph
A1  - Fißan, H. J.
A1  - Kapadi, A.
A1  - Liu, B. Y. H.
T1  - Data Inversion by Simplex Minimization for the Electrical Aerosol Analyzer
JF  - Aerosol Science and Technology. 1 (1982), H. 1982
Y1  - 1982
SN  - 0278-6826
SP  - 136
EP  - 146
ER  -