title: Partitioning of marine antifoulants in the marine environment.
abstract: The partitioning behaviour of the organic biocides, Irgarol 1051 and diuron and two inorganic biocides (copper and zinc) was investigated using six sediments of differing physico-chemical properties collected from unimpacted sites along the south coast of England. The kinetics of sorption and equilibrium partitioning between the sediments and seawater were investigated over a period of 20 days. Resulting organic carbon/water partition coefficients (log Koc) were related to suspended sediment concentration and ranged from 2.28 to 5.20 for diuron; and from 2.41 to 4.89 for Irgarol 1051. Sediment/water partition coefficients (log Kp) for copper and zinc varied from 2.46 to 5.08 l/kg and from 2.49 to 4.97 l/kg, respectively. Kinetic data indicated that there were significant interactions between the dissolved and particulate phases at the start of the experiments, just after mixing. This is thought to be a result of redistribution of organic carbon between the two phases.
authors.affiliation: WRc-NSF, Medmenham, Marlow, UK. comber_s@wrcplc.co.uk
authors.forename: S D W
authors.initials: SD
authors.lastname: Comber
authors.forename: G
authors.initials: G
authors.lastname: Franklin
authors.forename: M J
authors.initials: MJ
authors.lastname: Gardner
authors.forename: C D
authors.initials: CD
authors.lastname: Watts
authors.forename: A B A
authors.initials: AB
authors.lastname: Boxall
authors.forename: J
authors.initials: J
authors.lastname: Howcroft