Detecting organic contaminants in the unsaturated zone using soil and soil-pore water samples
- Texas A M Univ., College Station (USA)
- McNeese State Univ., Lake Charles, LA (USA)
A lysimeter study was conducted to compare the effectiveness of soil core and soil-pore water samples in detecting the movement of organic constituents from land-treated industrial wastes. Lysimeters collected from the Bastrop, Padina, and Weswood soils were amended with a refinery separator sludge, a wood-preserving bottom sediment sludge, or a nonhalogenated solvent recovery sludge at rates of 50, 15, and 50 g kg{sup {minus}1}, respectively. Soil-pore water samples from porous ceramic cups and soil cores were collected monthly at three depths in the lysimeters to monitor n-alkanes and polynuclear aromatic hydrocarbons from the petroleum waste, phenols and cresols from the wood-preserving waste, and aromatic solvents from the solvent recovery waste. The organic carbon normalized soil sorption coefficient (K{sub oc}) may be useful for determining when soil-pore water or soil core samples will be most effective in detecting organic chemicals in the unsaturated zone of soils. N-alkanes with log K{sub oc} values < 4.4; PNAs < 3; chlorophenols (mono-, di-, tri-) < 4.0; nitrophenols (mono-, di-) < 2.3; and aromatics < 3.3, are best detected using soil-pore water sampling methods. N-alkanes with log K{sub oc} values between 4.8 and 6.2 are equally detected by either sampling method. Otherwise, all these classes of chemicals with log K{sub oc} values greater than those mentioned are best detected by obtaining soil cores.
- OSTI ID:
- 5765048
- Journal Information:
- Hazardous Waste and Hazardous Materials; (USA), Vol. 7:2; ISSN 0882-5696
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ALKANES
ENVIRONMENTAL TRANSPORT
AROMATICS
CHLORINATED AROMATIC HYDROCARBONS
CRESOLS
NITRO COMPOUNDS
ORGANIC SOLVENTS
PHENOLS
POLYCYCLIC AROMATIC HYDROCARBONS
SOILS
CONTAMINATION
DRILL CORES
INTERSTITIAL WATER
LAND POLLUTION
LYSIMETERS
SAMPLING
GROUND WATER
HALOGENATED AROMATIC HYDROCARBONS
HYDROCARBONS
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
MASS TRANSFER
MEASURING INSTRUMENTS
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXYGEN COMPOUNDS
POLLUTION
SOLVENTS
WATER
540220* - Environment
Terrestrial- Chemicals Monitoring & Transport- (1990-)