Solvent Extraction of Thorium Using 5,11,17,23-Tetra[(2-ethyl acetoethoxyphenyl)(azo)phenyl]calix[4]arene

<table class="table-group" id="tab4"><tr><td><table class="table"><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr class="thead"><td class="align_left">Samples</td><td class="align_center">Certificated values  (mg/kg)</td><td class="align_center">Found (mg/kg)</td><td class="align_center">Recovery (%)</td><td class="align_center">RSD (%)</td></tr><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr><td class="align_left">SOIL-7</td><td class="align_center">8.2</td><td class="align_center">7.8  ±  0.8</td><td class="align_center">95.1%</td><td class="align_center">4%</td></tr><tr><td class="align_left">SL-1</td><td class="align_center">14.0</td><td class="align_center">14.9 ± 1.3</td><td class="align_center">106.4%</td><td class="align_center">6.4%</td></tr><tr class="table-tr"><td colspan="5"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

Determination of Th(IV) in the standard samples.

Journal of Chemistry

tab4

Table 4

Table 4: Solvent Extraction of Thorium Using 5,11,17,23-Tetra[(2-ethyl acetoethoxyphenyl)(azo)phenyl]calix[4]arene 