Size-dependent chemical composition of Los Angeles aerosols: a report on measurements made August 8-10, 1984. Final report

Technical Report · Wed May 01 00:00:00 EDT 1985

OSTI ID:5594566

McMurry, P H

Data acquired during a three-day (August 8-10, 1984) intensive field study in Los Angeles are discussed. The sampling site was on the grounds of the City of Hope Hospital in Duarte, California; simultaneous, complementary measurements were made at the same site by Southern California Edison. The primary objective of the CRC-supported research was to evaluate the utility of new aerosol-sampling instrumentation for measuring the size-dependent chemical composition of ambient aerosols. Two 30-liter-per-minute micro-orifice impactors were used to acquire ten size-resolved samples (four size cuts between 0.05 and 2.2 um) for analyses of total organic carbon, elemental carbon, sulfate, and nitrate. Two total filter samplers were also used to measure sub-2.2 um concentrations of total organic carbon, elemental carbon, sulfate, and nitrate. Sample times varied from four to twelve hours, depending on ambient loadings. Three size-resolved samples (three size cuts below 1 um) for organic species analyses were obtained with a 760-liter-per-minute high-volume micro-orifice impactor.

• Research Organization: Minnesota Univ., Minneapolis (USA). Dept. of Mechanical Engineering
• OSTI ID: 5594566
• Report Number(s): PB-86-166477/XAB
• Country of Publication: United States
• Language: English

Related Subjects

500200* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AEROSOLS
AIR POLLUTION
AIR SAMPLERS
CALIFORNIA
CARBON
CHEMICAL COMPOSITION
COLLOIDS
DISPERSIONS
ELEMENTS
EQUIPMENT
FEDERAL REGION IX
HAZARDOUS MATERIALS
MATERIALS
MEASURING INSTRUMENTS
NITRATES
NITROGEN COMPOUNDS
NONMETALS
NORTH AMERICA
OXYGEN COMPOUNDS
PARTICLE SIZE
POLLUTION
SAMPLERS
SAMPLING
SIZE
SOLS
SULFATES
SULFUR COMPOUNDS
USA