Influence of vapor pressure on vapor-particle partitioning of trace organic pollutants
Particle (P) and vapor (V) phase polycyclic aromatic hydrocarbons (PAH) at the Savannah River Plant were collected using a filter-polyurethane foam (PUF) plug hi-vol sampler. PUF was retentive for gaseous 3-ring PAH when air volumes not exceeding 600 m/sup 3/ were sampled on warm days. PAH breakthrough on PUF was governed by the liquid-phase vapor pressure (p/sub L//sup 0/) rather than the solid phase (p/sub S//sup 0/). The apparent VP partitioning of PAH, as estimated by (A(TSP)F) where A and F are the adsorbent- and filter-retained SOC concentrations and TSP is the total suspended particle concentration also correlated well with p/sub L//sup 0/. An apparatus was designed to equilibrate urban air particulate matter on a filter with controlled vapor concentrations of semivolatile organic compounds (SOC) at 20/sup 0/C under simulated air sampling conditions. VP for organochlorine pesticides and 3-4 ring PAH were estimated from laboratory measurements of A(TSP)F. Measured A(TSP)F correlated well with (p/sub L//sup 0/) of the SOC tested, but not with p/sub S//sup 0/. Comparisons of field and laboratory A(TSP)F were made and implications of p/sup 0/-dependent partitioning to the atmospheric chemistry of SOC are discussed
- Research Organization:
- South Carolina Univ., Columbia (USA)
- OSTI ID:
- 5282946
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR POLLUTION
AIR POLLUTION MONITORING
AIR SAMPLERS
AROMATICS
ATMOSPHERIC CHEMISTRY
CHEMISTRY
DESIGN
ECOLOGICAL CONCENTRATION
EQUIPMENT
HYDROCARBONS
NATIONAL ORGANIZATIONS
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
PHYSICAL PROPERTIES
POLLUTION
POLYCYCLIC AROMATIC HYDROCARBONS
SAMPLERS
SAVANNAH RIVER PLANT
THERMODYNAMIC PROPERTIES
TRACE AMOUNTS
US AEC
US DOE
US ERDA
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