Pyrene sorption by water-soluble organic carbon

Fluoranthene KDOC in sediment pore waters

“…The wide spread of K DOC values measured indicates that the composition of pore water organic matter varied between the sediments investigated. This finding is consistent with several recent reports of wide variation in Kj™ values measured in sediment pore water DOC with polycyclic aromatic hydrocarbons (PAHs) (Chin and Gschwend 1992) and soil water soluble DOC with PAHs (Herbert, Bertsch, and Novak 1993). and others 1991).…”

Organic Contaminants in Riverine and Groundwater Systems

“…An important aspect especially in riverine systems is the mobilisation of pollutants associated with colloids, suspended particulate matter or dissolved geopolymers and the subsequent enhanced spatial distribution (s.a. McCarthy and Zachara 1989;Johnson and Amy 1995). Modified transport processes in the presence of aquatic geopolymers are reported for pyrene and the pesticides amitrol, terbutylazine as well as pendimethaline (Huber et al 1992;Herbert et al 1993;Oesterreich et al 1999). …”

Solid-Phase Microextraction for the Evaluation of Partition Coefficients of a Chlorinated Dioxin and Hexachlorobenzene into Humic Substances

“…[1][2][3][4][5] The partition of HOPs into HS has been useful for the reduction of ecotoxicity of HOPs and has also been useful for better understanding of their transportations in the environment. [6][7][8][9] To quantify the partition of HOPs into HSs, researchers have evaluated the partition coefficients of HOPs into HSs (Koc) by measuring the unbound and bound species of HOPs with HSs.…”

“…

We developed a method for the evaluation of the partition coefficients (Koc) of hexachlorobenzene (HCB) and 1,2,3,4,6,7, into humic substances (HSs) by using solid-phase microextraction (SPME). In the aqueous solution containing HCB or HpCDD and HS, the unbound species of HCB or HpCDD were accumulated on the SPME fiber.

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