Recovery of organic carbon from atmospheric particulate matter using soxhlet extraction with the benzene/methanol azeotrope
The extraction efficiency of the benzene/methanol azeotrope for organic carbon in atmospheric particulate matter was determined using a carbon types analyzer and also radio-labeled tracers and liquid scintillation spectroscopy. A twenty-four hour Soxhlet extraction with the azeotrope extracts 76 percent of the organic carbon, 15 percent of the elemental carbon, and 61 percent of the total carbon. Nonpolar and moderately polar organic compounds such as dotriacontane, benzo(a)pyrene, and stearic acid are extracted with 95 percent recovery. Highly polar oxygenated species such as succinic acid are extracted with an efficiency of 82 percent. The Soxhlet extractor was more efficient than ultrasonication for the extraction of highly polar species.
- Research Organization:
- Oak Ridge National Lab., TN
- DOE Contract Number:
- W-7405-ENG-26
- OSTI ID:
- 7001687
- Journal Information:
- J. Environ. Sci. Health, Part A; (United States), Vol. A18:2
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
CARBON 14 COMPOUNDS
SCINTILLATION COUNTING
PARTICULATES
SOLVENT EXTRACTION
BENZENE
BENZOPYRENE
LIQUID SCINTILLATION DETECTORS
METHANOL
OCTADECANOIC ACID
RADIOACTIVE AEROSOLS
SUCCINIC ACID
AEROSOLS
ALCOHOLS
AROMATICS
CARBOXYLIC ACIDS
COLLOIDS
CONDENSED AROMATICS
COUNTING TECHNIQUES
DICARBOXYLIC ACIDS
DISPERSIONS
EXTRACTION
HYDROCARBONS
HYDROXY COMPOUNDS
LABELLED COMPOUNDS
MEASURING INSTRUMENTS
MONOCARBOXYLIC ACIDS
ORGANIC ACIDS
ORGANIC COMPOUNDS
PARTICLES
RADIATION DETECTORS
SCINTILLATION COUNTERS
SEPARATION PROCESSES
SOLS
500300* - Environment
Atmospheric- Radioactive Materials Monitoring & Transport- (-1989)