Dry-acid deposition on materials and vegetation: concentrations in ambient air. Final report, 13 July 1982-15 April 1985

Technical Report · Wed May 01 04:00:00 EDT 1985

OSTI ID:6185892

John, W; Wall, S M; Ondo, J L

The objectives of this study were to: (1) make baseline measurements of dry-acid deposition at two sites in the South Coast Air Basin in California, (2) develop measurement techniques suitable for long-term monitoring of dry-acid deposition, and; (3) study the mechanisms of dry deposition in order to provide a better basis for monitoring methods. The ambient concentration - deposition velocity method was selected for the development of monitoring techniques for dry acid deposition. Filter sampling trains containing cyclones, gaseous denuders and multiple filters, some chemically impregnated, were used to sample particulate strong acid, ammonium nitrate acid, and ammonia. Hydrogen peroxide bubblers sampled sulfur dioxide. Additionally, a Berner Cascade impactor was used to measure the size distributions of acidic particles. A new passive sampler (nuclepore surrogate leaf) for sulfur dioxide, sulfate, and nitrate was tested. Potted Ligustrum plants were exposed and the leaves washed for sulfate and nitrate deposits.

• Research Organization: California Dept. of Health Services, Berkeley (USA). Air and Industrial Hygiene Lab.
• OSTI ID: 6185892
• Report Number(s): PB-85-241206/XAB; CA/DOH/AIHL/SP-34
• Country of Publication: United States
• Language: English

Related Subjects

500200* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ACID RAIN
AIR POLLUTION
ATMOSPHERIC PRECIPITATIONS
CALIFORNIA
CHALCOGENIDES
CHEMICAL ANALYSIS
FEDERAL REGION IX
NITROGEN COMPOUNDS
NITROGEN OXIDES
NORTH AMERICA
OXIDES
OXYGEN COMPOUNDS
PARTICLES
PARTICULATES
POLLUTION
RAIN
SAMPLING
SULFATES
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
USA