Pyrene sorption by water-soluble organic carbon

Journal Article · Mon Feb 01 04:00:00 EST 1993 · Environmental Science and Technology; (United States)

DOI:https://doi.org/10.1021/es00039a021· OSTI ID:6248280

Herbert, B E ^[1]; Bertsch, P M; Novak, J M ^[2]

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1. Texas A M Univ., College Station (United States)
2. Univ. of Georgia, Aiken, SC (United States)

Natural dissolved organic matter (DOM) in soil solution has the potential to facilitate the transport of nonionic organic contaminants (NOC). The interactions between pyrene and ultrafiltration fractions of water-soluble organic carbon (WSOC), humic acid, and fulvic acid were quantified using fluorescence-quenching spectroscopy. Pyrene partition coefficients to the smaller WSOC fractions varied between 4.1 [times] 1.0[sup 3] and 6.8 [times] 10[sup 3] L kg[sup [minus]1], while partition coefficients for the largest fraction of WSOC, humic acid, and fulvic acid were 1.5 [times] 10[sup 4], 1.7 [times] 10[sup 5], and 1.1 [times] 10[sup 4] L kg[sup [minus]1], respectively. These results demonstrate that the use of the same [sup c]K[sub oc] value to describe NOC partitioning to both immobile organic matter and soil solution DOM will overestimate the ability of DOM to facilitate the transport of NOC. Conversely, pyrene partitioning data to the largest WSOC fraction suggest that the presence of colloidal organic matter suspended in the soil solution may have a large influence on NOC transport. 32 refs., 3 figs., 3 tabs.

• DOE Contract Number: AC09-76SR00819
• OSTI ID: 6248280
• Journal Information: Environmental Science and Technology; (United States), Journal Name: Environmental Science and Technology; (United States) Vol. 27:2; ISSN 0013-936X; ISSN ESTHAG
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
54 ENVIRONMENTAL SCIENCES
540320* -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (1990-)
AROMATICS
CONDENSED AROMATICS
EMISSION SPECTROSCOPY
FLUORESCENCE SPECTROSCOPY
FULVIC ACIDS
HUMIC ACIDS
HYDROCARBONS
MATTER
MONITORING
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC MATTER
POLLUTION
PYRENE
SORPTION
SPECTROSCOPY
WATER POLLUTION