Fourier-transform infrared spectrometry of ambient aerosols

Technical Report · Sun May 01 04:00:00 EDT 1988

OSTI ID:6958382

Pollard, M; Jaklevic, J

Fourier-transform infrared (FTIR) spectrometry was evaluated as a method for determining the concentration of selected species present in ambient aerosols collected on Teflon filters. The filters are analyzed by transmission measurements after collection of the fine fraction (<2.5 micrometers diameter) of the ambient particles on 2 micrometers-pore-size Teflon filters. The spectra of the blank filters are subtracted from the spectra of the loaded filters and the area of the specific absorbance bands for ammonium, nitrate, and sulfate are measured and compared to calibration curves. The filter orientation must be maintained for all measured infrared spectra.

• Research Organization: Lawrence Berkeley Lab., CA (USA). Engineering Div.
• OSTI ID: 6958382
• Report Number(s): PB-88-213236/XAB
• Country of Publication: United States
• Language: English

Related Subjects

440300 -- Miscellaneous Instruments-- (-1989)
47 OTHER INSTRUMENTATION
500200* -- Environment
Atmospheric-- Chemicals Monitoring &amp; Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AEROSOLS
AIR FILTERS
AIR POLLUTION MONITORING
AMMONIUM COMPOUNDS
CHEMICAL ANALYSIS
COLLOIDS
DISPERSIONS
EQUIPMENT
FILTERS
FOURIER TRANSFORM SPECTROMETERS
INFRARED SPECTROMETERS
MEASURING INSTRUMENTS
NITRATES
NITROGEN COMPOUNDS
OXYGEN COMPOUNDS
PARTICLES
PARTICULATES
POLLUTION CONTROL EQUIPMENT
SOLS
SPECTROMETERS
SULFATES
SULFUR COMPOUNDS