Southern California Air Quality Study: summer phase. Final report
Technical Report
·
OSTI ID:6694040
During the Southern California Air Quality Study (SCAQS), sampling was performed at Long Beach for eleven, 24-hr. periods between June 19 and September 4, 1987. Sampling focused on fine particulate acids. Two fine particulate samplers were operated, with one of the units preceded by an ammonia denuder. In addition, a semi-continuous particle sulfur monitor was employed, which was able to discriminate between sulfuric acid and ammonium sulfates. Strong acid concentrations observed were very low, ranging up to 3 ug/cu m, expressed as H/sub 2/SO/sub 4/. Total particulate-acid concentrations were as high as 11 ug/cu m, expressed as H/sub 2/SO/sub 4/. Acidic sulfates contributed to no more than 20% of the strong acidity. Relatively strong organic acids (e.g., formic acid are possible important contributors to the particulate strong acids. Sulfuric acid concentrations with the particle S monitor were below detectable levels. Ammonium sulfate results with the S monitor showed moderate correlation with filter-collected sulfate (r=0.82) and averaged about 5 percent higher.
- Research Organization:
- California Dept. of Health Services, Berkeley (USA). Air and Industrial Hygiene Lab.
- OSTI ID:
- 6694040
- Report Number(s):
- PB-88-240445/XAB; CA/DOH/AIHL/SP-49
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
500200* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ACID RAIN
AEROSOLS
AIR POLLUTION MONITORING
AIR QUALITY
AIR SAMPLERS
ATMOSPHERIC CHEMISTRY
ATMOSPHERIC PRECIPITATIONS
CALIFORNIA
CHALCOGENIDES
CHEMISTRY
COLLOIDS
DISPERSIONS
DOCUMENT TYPES
ELEMENTS
ENVIRONMENTAL QUALITY
EQUIPMENT
FEDERAL REGION IX
HYDROGEN COMPOUNDS
INORGANIC ACIDS
NAPAP
NITROGEN COMPOUNDS
NITROGEN OXIDES
NONMETALS
NORTH AMERICA
ORGANIC ACIDS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
OZONE
PARTICLES
PARTICULATES
PROGRESS REPORT
RAIN
SAMPLERS
SOLS
SULFATES
SULFUR
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
SULFURIC ACID
USA
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ACID RAIN
AEROSOLS
AIR POLLUTION MONITORING
AIR QUALITY
AIR SAMPLERS
ATMOSPHERIC CHEMISTRY
ATMOSPHERIC PRECIPITATIONS
CALIFORNIA
CHALCOGENIDES
CHEMISTRY
COLLOIDS
DISPERSIONS
DOCUMENT TYPES
ELEMENTS
ENVIRONMENTAL QUALITY
EQUIPMENT
FEDERAL REGION IX
HYDROGEN COMPOUNDS
INORGANIC ACIDS
NAPAP
NITROGEN COMPOUNDS
NITROGEN OXIDES
NONMETALS
NORTH AMERICA
ORGANIC ACIDS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
OZONE
PARTICLES
PARTICULATES
PROGRESS REPORT
RAIN
SAMPLERS
SOLS
SULFATES
SULFUR
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
SULFURIC ACID
USA