Abstract
Desorption hysteresis has been reported frequently in the literature, with several theories advanced to explain the cause of this phenomenon. Batch experiments were performed to observe sorption-desorption behaviour of endrin and heptachlor epoxide onto chitin in seawater as a function of chitin concentration, temperature and salinity. For full range of solids concentrations, sorption was described by a single linear partition coefficient. Desorption hysteresis was found at low chitin concentrations for endrin, increasing both at low temperatures and high salinity values. Results of these experiments were interpreted with a radial-diffusion sorption rate model. Model predictions of the desorption experiments showed that slow desorption rates explained most of the apparent hysteresis. The “salting effect” in marine systems makes partition coefficients ∼ 0.2 log unit higher than comparable partition coefficents measured in freshwater.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
