Factors affecting sequestration and bioavailability of phenanthrene in soils

Journal Article · Wed Oct 01 04:00:00 EDT 1997 · Environmental Toxicology and Chemistry

DOI:https://doi.org/10.1002/etc.5620161008· OSTI ID:563979

White, J C; Kelsey, J W; Hatzinger, P B; Alexander, M ^[1]

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1. Cornell Univ., Ithaca, NY (United States)

A study was conducted to determine factors affecting the sequestration and changes in bioavailability as phenanthrene persists in soils. Phenanthrene became sequestered in seven soils differing appreciably in organic matter and clay content as measured by earthworm uptake, bacterial mineralization, or extractability. Phenanthrene also became sequestered as it aged in soil aggregates of various sizes as measured by decline in availability to a bacterium, a mild extractant, or both. Wetting and drying a soil during aging reduced the amount of phenanthrene recovered by a mild extractant and the rate and extent of bacterial mineralization of the hydrocarbon. After biodegradation of phenanthrene added to the soil, more of the compound remained if it had been aged than if it had not been aged. Wetting and drying the soil during aging further increased the amount of phenanthrene remaining after biodegradation. The rate and extent of bacterial mineralization of phenanthrene were less in leached than in unleached soil. Aging/sequestration is thus markedly affected by soil properties and environmental factors.

• Sponsoring Organization: USDOE
• OSTI ID: 563979
• Journal Information: Environmental Toxicology and Chemistry, Journal Name: Environmental Toxicology and Chemistry Journal Issue: 10 Vol. 16; ISSN ETOCDK; ISSN 0730-7268
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
BIODEGRADATION
BIOLOGICAL AVAILABILITY
LEACHING
PHENANTHRENE
RISK ASSESSMENT
SOIL CHEMISTRY
SOILS