Field comparison of methods for the measurement of gaseous and particulate contributors to acidic dry deposition
A field study was conducted to compare methods for sampling and analysis of atmospheric constituents that are important contributors to acidic dry deposition. Three multicomponent samplers were used: the Canadian filter pack (FP), the annular denuder system (ADS), and the transition flow reactor (TFR). A tunable diode laser absorption spectrometer (TDLAS) provided continuous reference measurements of NO2 and HNO3. Nitrogen dioxide was also monitored with continuous luminol-based chemiluminescence monitors and with passive sampling devices (PSDs). The study was designed to provide a database for statistical comparison of the various methods with emphasis on the multicomponent samplers under consideration for use in a national dry deposition network. The study was conducted at the EPA dry deposition station in Research Triangle Park, NC between 29 September and 12 October, 1986. Daily averaging and/or sampling times were employed for the 13-day study; weekly samples were also collected, but results from these samples are not compared in the paper. Different measurements of ambient concentrations of the following constituents are compared: total particulate and gaseous NO3(-), HNO3, NO2, total particulate NH4(-), NH3, total particulate SO4(-), and SO2.
- Research Organization:
- Research Triangle Inst., Durham, NC (USA)
- OSTI ID:
- 5772119
- Report Number(s):
- PB-91-163774/XAB; CNN: EPA-68-02-4544
- Resource Relation:
- Other Information: Pub. in Atmospheric Environment, v24A n1 p155-165 1990. Prepared in cooperation with Atmospheric Environment Service, Downsview (Ontario), Unisearch Associates, Inc., Toronto (Ontario), and Northrop Services, Inc., Research Triangle Park, NC. Sponsored by Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Research and Exposure Assessment Lab
- Country of Publication:
- United States
- Language:
- English
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01 COAL, LIGNITE, AND PEAT
AIR SAMPLERS
COMPARATIVE EVALUATIONS
AMMONIA
AIR POLLUTION MONITORING
AMMONIUM COMPOUNDS
NITRIC ACID
NITROGEN DIOXIDE
SULFATES
SULFUR DIOXIDE
ACIDIFICATION
AIR POLLUTION
CANADA
CHEMICAL ANALYSIS
DEPOSITION
FIELD TESTS
CHALCOGENIDES
DEVELOPED COUNTRIES
EQUIPMENT
HYDRIDES
HYDROGEN COMPOUNDS
INORGANIC ACIDS
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NITROGEN OXIDES
NORTH AMERICA
OXIDES
OXYGEN COMPOUNDS
POLLUTION
SAMPLERS
SULFUR COMPOUNDS
SULFUR OXIDES
TESTING
540120* - Environment
Atmospheric- Chemicals Monitoring & Transport- (1990-)
010900 - Coal
Lignite
& Peat- Environmental Aspects