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Fourier transform infrared spectrometry of ambient aerosols

Technical Report ·
OSTI ID:7007587
;
Fourier transform infrared (FTIR) spectrometry has been 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 ..mu..m diameter) of the ambient particles on 2 ..mu..m 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. 46 refs., 22 figs., 3 tabs.
Research Organization:
Lawrence Berkeley Lab., CA (USA)
DOE Contract Number:
AC03-76SF00098
OSTI ID:
7007587
Report Number(s):
LBL-25009; ON: DE88014051
Country of Publication:
United States
Language:
English

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Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102* -- Chemical &amp; Spectral Procedures
500200 -- Environment
Atmospheric-- Chemicals Monitoring &amp; Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AEROSOLS
AIR FILTERS
AMMONIUM COMPOUNDS
CARBON
CHEMICAL ANALYSIS
COLLOIDS
DATA
DISPERSIONS
ELEMENTS
EQUIPMENT
EXPERIMENTAL DATA
FILTERS
FLUORINATED ALIPHATIC HYDROCARBONS
FOURIER TRANSFORM SPECTROMETERS
HALOGENATED ALIPHATIC HYDROCARBONS
INFORMATION
INFRARED SPECTRA
MATERIALS
MEASURING INSTRUMENTS
NITRATES
NITROGEN COMPOUNDS
NONDESTRUCTIVE ANALYSIS
NONMETALS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC FLUORINE COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC POLYMERS
OXYGEN COMPOUNDS
PARTICLES
PARTICULATES
PETROCHEMICALS
PETROLEUM PRODUCTS
PLASTICS
POLLUTION CONTROL EQUIPMENT
POLYETHYLENES
POLYMERS
POLYOLEFINS
POLYTETRAFLUOROETHYLENE
SOLS
SPECTRA
SPECTROMETERS
SULFATES
SULFUR COMPOUNDS
SYNTHETIC MATERIALS
TEFLON
X-RAY EMISSION ANALYSIS
X-RAY FLUORESCENCE ANALYSIS