Normally, molecular diffusion of contamination across the sediment-water interface is driven by chemical concentration gradient, then diffusive flux of dissolved contaminants from pore water to overlying water could be estimated through Fick’s First Law on this assumption.
In many previous reports, this Law was used to calculate the diffusive flux for many dissolved inorganic species (like nutrients and heavy metals). So, I want to know whether this Law could also be true for the cases of HOCs?
Besides, according to the Fick's equation, Ds (cm2 s-1), the sediment diffusion coefficient of the species derived from the diffusion coefficient D0 (cm2 s-1) of the species at infinite dilution. This parameter is crucial for getting the diffusive flux. However, there are few publications that report the values of several typical HOCs (such as 16 priority PAHs) under specific experimental conditions. Then, are there some theoretical approaches to get this parameter?
Thanks!
See the following (it's a great source for what you're looking for):
Calculating the Diffusive Flux of Persistent Organic Pollutants between Sediments and the Water Column on the Palos Verdes Shelf Superfund Site Using Polymeric Passive Samplers
Loretta A. Fernandez*‡, Wenjian Lao§, Keith A. Maruya§, and Robert M. Burgess‡
‡ U.S. Environmental Protection Agency, Atlantic Ecology Division, Narragansett, Rhode Island 02882, United States
§ Southern California Coastal Water Research Project (SCCWRP), Costa Mesa, California 92626, United States
Environ. Sci. Technol., 2014, 48 (7), pp 3925–3934
DOI: 10.1021/es404475c
Publication Date (Web): February 24, 2014
Copyright © 2014 American Chemical Society
You can look at the book given in below
Soil and Aquifer Pollution: Non-Aqueous Phase Liquids - Contamination and Reclamation
Thanks a lot ! Dear, Dr. Ahmet Altin, Do you have an electronic version of this book (PDF or docx) within convenient? contact me: [email protected].
Unfortunately, i have not got pdf version of it. İf i reach, i Will send you one copy
Unfortunately, i have not got pdf version of it. İf i reach, i Will send you one copy
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