Desorption kinetics of chlorobenzenes, polycyclic aromatic hydrocarbons, and polychlorinated biphenyls: Sediment extraction with Tenax{reg_sign} and effects of contact time and solute hydrophobicity

Journal Article · Tue Jul 01 00:00:00 EDT 1997 · Environmental Toxicology and Chemistry

DOI:https://doi.org/10.1002/etc.5620160703· OSTI ID:514565

Cornelissen, G; Noort, P C.M. van ^[1]; Govers, H A.J. ^[2]

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1. Inst. for Inland Water Management and Waste Water Treatment, Lelystad (Netherlands)
2. Univ. of Amsterdam (Netherlands). Dept. of Environmental, and Toxicological Chemistry

A technique using Tenax TA{reg_sign} beads as sink for desorbed solute was employed to measure the kinetics of desorption of chlorobenzenes, polychlorinated biphenyls, and polycyclic aromatic hydrocarbons from laboratory-contaminated sediment. First-order rate constants of rapid and slow desorption were in the order of 10{sup {minus}1}/h and 10{sup {minus}3}/h, respectively. The rate constants of slow desorption correlate well with the molecular volumes of the compounds used and decrease between 2 and 34 d of equilibration. Slowly desorbing fractions increase with both increasing solute hydrophobicity and increasing equilibration time.

• Sponsoring Organization: USDOE
• OSTI ID: 514565
• Journal Information: Environmental Toxicology and Chemistry, Journal Name: Environmental Toxicology and Chemistry Journal Issue: 7 Vol. 16; ISSN ETOCDK; ISSN 0730-7268
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
CHLORINATED AROMATIC HYDROCARBONS
DESORPTION
POLYCYCLIC AROMATIC HYDROCARBONS
POLYMERS
SEDIMENTS
SORPTIVE PROPERTIES
WATER POLLUTION