Intercomparison of four methods to determine size distributions of low-concentration (approximately 100 cm[sup [minus]3]), ultrafine aerosols (3 < D[sub p] < 10 nm) with illustrative data from the Arctic
- Univ. of Lund (Sweden)
- Univ. of Helsinki (Finland)
- Univ. of Washington, Seattle, WA (United States)
- Univ. of Stockholm (Sweden)
- Univ. of Minnesota, Minneapolis, MN (United States)
Four different methods for measuring ultrafine particle size distributions in the 3-10-nm particle diameter range are compared and discussed. These methods all use an ultrafine condensation particle counter (TSI Inc. Model 3025 or its prototype) as the detector, but use different approaches to determine the size of the particles counted. Size classification was achieved using a Hauke Model VIE-06 differential mobility analyzer, a specially configured TSI Model 3040S diffusion battery, an ultrafine condensation particle counter with a variable condenser temperature, and an ultrafine condensation particle counter with a pulse height analyzer for signals produced by the optical detector. The response of these systems to ultrafine particles of known size and composition was studied during a workshop held in Lund, Sweden, during July 1991. After this workshop, measurements of ultrafine particles were made on the Swedish icebreaker Oden during the International Arctic Ocean Expedition 1991 (August 1, 1991 through October 7, 1991). In this article, the results of these laboratory and field measurements are discussed. The strengths and limitations of these measurement methods are emphasized. 30 refs., 9 figs., 3 tabs.
- OSTI ID:
- 7174545
- Journal Information:
- Aerosol Science and Technology; (United States), Vol. 21:2; ISSN 0278-6826
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
47 OTHER INSTRUMENTATION
AEROSOLS
PARTICLE SIZE
ARCTIC REGIONS
AIR POLLUTION MONITORING
COMPILED DATA
COUNTING TECHNIQUES
DIFFUSION
MEASURING INSTRUMENTS
NUCLEATION
SODIUM CHLORIDES
SULFUR DIOXIDE
SULFURIC ACID
ALKALI METAL COMPOUNDS
CHALCOGENIDES
CHLORIDES
CHLORINE COMPOUNDS
COLLOIDS
CRYOSPHERE
DATA
DISPERSIONS
HALIDES
HALOGEN COMPOUNDS
HYDROGEN COMPOUNDS
INFORMATION
INORGANIC ACIDS
MONITORING
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
POLAR REGIONS
SIZE
SODIUM COMPOUNDS
SOLS
SULFUR COMPOUNDS
SULFUR OXIDES
540110*
540120 - Environment
Atmospheric- Chemicals Monitoring & Transport- (1990-)
440700 - Geophysical & Meteorological Instrumentation- (1990-)