Differentiation of Hydrophobic from Hydrophilic Submicrometer Aerosol Particles

A method has been developed that differentiates hydrophobic from hydrophilic submicrometer aerosol particles in air environments containing polydisperse aerosols composed of different chemical species. First, a narrow particle size range is extracted from the polydisperse aerosol by an electrostatic...

Full description

Saved in:
Bibliographic Details
Published in:Aerosol science and technology 1993, Vol.18 (2), p.202-212
Main Authors: Juozaitis, Arvydas, Ulevičius, Vidmantas, Girgždys, Aloyzas, Willeke, Klaus
Format: Article
Language:English
Subjects:
AEROSOLS
AIR POLLUTION MONITORING
APPLIANCES
Chemistry
COAL BURNING APPLIANCES
Colloidal state and disperse state
COLLOIDS
DISPERSIONS
ELECTROSTATIC SEPARATION
ENVIRONMENTAL SCIENCES
Exact sciences and technology
FUEL OILS
FUELS
General and physical chemistry
LIQUID FUELS
MONITORING
PETROLEUM PRODUCTS
PROBABILITY
SEPARATION PROCESSES
SOLS 540120 > Environment, Atmospheric-- Chemicals Monitoring & Transport-- (1990-)
SOOT
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A method has been developed that differentiates hydrophobic from hydrophilic submicrometer aerosol particles in air environments containing polydisperse aerosols composed of different chemical species. First, a narrow particle size range is extracted from the polydisperse aerosol by an electrostatic aerosol classifier. Then the monodisperse aerosols of different origins are exposed to preselected supersaturation levels and are size-classified again by a second electrostatic classifier. Hydrophobic aerosol particles pass through the second classifier when its size window matches that of the first classifier. Hydrophilic aerosol particles grow to a larger size and are removed by the second classifier. The method has been applied in the field by measuring the fraction of hydrophobic atmospheric particles in a suburb of Vilnius, Lithuania, during a period of high emission of hydrophobic soot particles from residential coal and industrial oil burning in winter.
ISSN:0278-6826
1521-7388
DOI:10.1080/02786829308959595