Extraction of organic compounds from solid samples
Pyridine, benzene, cyclohexane, methylene chloride, dimethyl sulfoxide, dimethylformamide, and n-methylpyrrolidone have been compared for the extraction of polycyclic organic materials (POMs) from urban air, diesel, and stack particulate samples. Both sonic and Soxhlet techniques have been examined for both natural environmental particulates and particulates spiked with selected POMs. The extraction results vary for different polycyclic compounds adsorbed on different solid matrices, so no single solvent or extraction technique could be unambiguously recommended. However, comparative average results for 14 compounds spiked onto fly ash at 0.1, 0.25, and 1.0 ..mu..g/g showed pyridine to have 1.5 times more extraction efficiency than benzene. These and other reported results suggest that pyridine deserves more attention as an extractant for particulate samples. In separate tests, recoveries of POMs from fly ash were not improved by deactivation with aqueous solutions of ammonium hydroxide, thiocyanate and carbonate, and sodium nitrite prior to the extraction. 39 references, 5 tables.
- Research Organization:
- Ames Lab., IA
- DOE Contract Number:
- W-7405-ENG-82
- OSTI ID:
- 6014642
- Journal Information:
- Anal. Chem.; (United States), Vol. 58:4
- Country of Publication:
- United States
- Language:
- English
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ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
54 ENVIRONMENTAL SCIENCES
02 PETROLEUM
BENZENE
SOLVENT PROPERTIES
CYCLOHEXANE
DMSO
FORMAMIDE
METHYLENE CHLORIDE
ORGANIC COMPOUNDS
SOLVENT EXTRACTION
PYRIDINE
PYRROLIDONES
AIR
EXHAUST GASES
EXPERIMENTAL DATA
PARTICULATES
STACKS
ALKANES
AMIDES
AROMATICS
AZINES
AZOLES
CYCLOALKANES
DATA
EXTRACTION
FLUIDS
GASEOUS WASTES
GASES
HETEROCYCLIC COMPOUNDS
HYDROCARBONS
INFORMATION
LACTAMS
NUMERICAL DATA
ORGANIC CHLORINE COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC SULFUR COMPOUNDS
PARTICLES
PYRIDINES
PYRROLES
SEPARATION PROCESSES
SULFOXIDES
WASTES
400105* - Separation Procedures
500200 - Environment
Atmospheric- Chemicals Monitoring & Transport- (-1989)
020800 - Petroleum- Waste Management