Journal
SEPARATION SCIENCE AND TECHNOLOGY
Volume 55, Issue 9, Pages 1650-1655Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/01496395.2019.1600551
Keywords
Calix[4]arene; silica resin; copper; solid-phase extraction; HPLC; atomic absorption spectroscopy
Funding
- National Centre of Excellence in Analytical Chemistry, University of Sindh, Jamshoro
- Scientific and Technological Research Council of Turkey (TUBITAK) under 2216program in Selcuk University, Faculty of Science, Department of Chemistry, Konya, Turkey
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This study deals with investigation of selectivity of p-morpholino-methylcalix[4]arene appended silica from a group of metal ions having similar charge and radii. The values of distribution ratio revealed that modified silica possess higher selectivity for Cu2+. In addition, relative selectivity coefficients of modified silica were found to be 24.1, 13.8, 8.6 and 4.01 for Cu2+/Ni2+, Cu2+/Co2+, Cu2+/Cd2+, Cu2+/Pb2+, respectively. The maximum adsorption capacity was 1.5 mmolg(-1). The reusability data suggested no any loss of adsorption capacity of this material up to 10 cycles. The developed material was also applied for determination of copper in lake water samples with satisfactory results.
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