Qureshi, ImdadullahMemon, ShahabuddinYılmaz, Mustafa2020-03-262020-03-262009Qureshi, I., Memon, S., Yılmaz, M., (2009). Estimation of Chromium(VI) Sorption Efficiency of Novel Regenerable P-tert-butylcalix[8]areneoctamide Impregnated Amberlite Resin. Arsenic in Geosphere and Human Diseases, (164), 675-682. Doi: 10.1016/j.jhazmat.2008.08.076978-0-203-84531-8; 978-0-415-57898-11876-6218https://hdl.handle.net/20.500.12395/245883rd International Congress on Arsenic in the Environment -- MAY 17-21, 2010 -- Natl Cheng Kung Univ, Dept Earth Sci, Tainan, TAIWANThe article describes a convenient synthesis and Cr(VI) extraction efficiency of a novel p-tertbutylcalix[8]areneoctamide impregnated Amberlite (XAD-4) resin. Using p-tert-butylcalix[8]arene macrocyclic building block, two strategies have been developed; i.e., derivatization of p-tertbutylcalix[8]arene framework with sophisticated ionophoric groups having efficiency to extract oxoanions from aqueous media and, impregnation of p-tert-butylcalix[8]arene derivative onto the polymeric support. Liquid–liquid and solid–liquid extraction experiments have been performed to evaluate the Cr(VI) extraction efficiency of both p-tert-butylcalix[8]arene derivative and the impregnated resin. From the results, it has been deduced that solid-phase extraction method is more convenient and efficient than liquid–liquid extraction process. The impregnated XAD-4 resin has been found regenerable with better extracting efficiency as compared to the simple p-tert-butylcalix[8]areneoctamide ionophore.eninfo:eu-repo/semantics/openAccessCalixareneDichromateImpregnationSorptionLangmuir/Freundlich isothermSolid-phase extractionConference Object164675682N/AWOS:000392030500167N/A