Strong Acid aerosol size distributions in the Los Angeles Air Basin

Conference · Sun Jan 01 04:00:00 EST 1984 · Proc., Annu. Meet., Air Pollut. Control Assoc.; (United States)

OSTI ID:5808464

Wall, S; Ondo, J; John, W

Exploratory measurements have been made of strong acid particle size in the Los Angeles Basin using a new low pressure cascade impactor. Precautions were taken to prevent acid neutralization during sampling, storage and chemical analysis. Sufficient sample was obtained to allow acid microtitration and chemical analysis on each impactor stage. Maximum strong acid concentration occurred for particles on the stage representing mean diameter 0.35 ..mu..m, except for one Los Angeles sampling period. The absence of a correlation between particulate size distributions for strong acid and sulfates precludes the prediction of strong acid particle size from the more easily measured sulfate. A strong similarity in size distributions for ammonium and sulfate is consistent with the presence of ammonium sulfate salts. The nitrate size distributions peaked at larger than one micron.

• Research Organization: Air and Industrial Hygiene Lab., Berkeley, CA
• OSTI ID: 5808464
• Report Number(s): CONF-840612-
• Conference Information: Journal Name: Proc., Annu. Meet., Air Pollut. Control Assoc.; (United States) Journal Volume: 6
• Country of Publication: United States
• Language: English

Related Subjects

500200* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ACID RAIN
AIR QUALITY
AMMONIUM COMPOUNDS
AMMONIUM SULFATES
ATMOSPHERIC PRECIPITATIONS
CALIFORNIA
CASCADE IMPACTORS
CHEMICAL ANALYSIS
ENVIRONMENTAL QUALITY
FEDERAL REGION IX
LOS ANGELES
NITRATES
NITROGEN COMPOUNDS
NORTH AMERICA
OXYGEN COMPOUNDS
PARTICLE SIZE
PARTICLES
PARTICULATES
PH VALUE
RAIN
SAMPLING
SIZE
STORAGE
SULFATES
SULFUR COMPOUNDS
USA