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ORIGINAL ARTICLE
Year : 2013  |  Volume : 36  |  Issue : 2  |  Page : 78-84

Para-tert-butylcalix[4]arene as promising complexing agent for removal of the strontium from the aqueous medium


1 Division of CBRN Defence, Institute of Nuclear Medicine and Allied Sciences, Delhi; Department of Pharmaceutics, JSS College of Pharmacy, JSS University, Mysore, Karnataka, India
2 Division of CBRN Defence, Institute of Nuclear Medicine and Allied Sciences, Delhi, India
3 Department of Pharmaceutics, JSS College of Pharmacy, JSS University, Mysore, Karnataka, India

Correspondence Address:
Rakesh Kumar Sharma
Division of CBRN Defence, Institute of Nuclear Medicine and Allied Sciences, Brig. S. K. Mazumdar Road, New Delhi - 110 054
India
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Source of Support: Director, INMAS Delhi India for providing experimental facilities and the financial support for this work., Conflict of Interest: None


DOI: 10.4103/0972-0464.128873

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Strontium-90 is one of radioactive nuclear fallout products, can cause serious health effects. Efficient techniques are needed to remove radioactive strontium from contaminated persons. In this study complexation properties of the p-tert-butylcalix[4]arene has been evaluated against cold strontium nitrate. Ultra violet-visible (UV-vis) and fluorescence spectrophotometric techniques were used for the qualitative analytical screening and the inductively coupled plasma-atomic emission spectrometry (ICP-AES) technique used for the quantitative complexation of p-tert-butylcalix[4]arene with strontium nitrate. UV-vis, fluorescence spectroscopy and ICP-AES studies confirmed the complexation of p-tert-butylcalix[4]arene and strontium. Extraction study of strontium from picric acid by trans-chelation method proves that p-tert-butylcalix[4]arene is nearly 87% ± 3% effective. Complexation can be attributed to the cation-lone pair interaction and the bonding between the Sr 2+ and the hydroxyl group of the p-tert-butylcalix[4]arene implying its promise as a complexing agent for the removal of strontium.


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