Alkali Metal Modification of Silica Gel-Based Stationary Phase in Gas Chromatography

<table class="table-group" id="tab4"><tr><td><table class="table"><tr><td class="thead-hr" colspan="10"><hr/></td></tr><tr class="thead"><td align="left" rowspan="2">Columns</td><td align="center" colspan="2">C<sub>6</sub>, C<sub>7</sub></td><td align="center" colspan="2">C<sub>7</sub>, C<sub>8</sub></td><td align="center" colspan="2">C<sub>8</sub>, C<sub>9</sub></td><td align="center" colspan="2">C<sub>9</sub>, C<sub>10</sub></td><td align="center" rowspan="2">Uniformity criterion <svg height="11.425" id="M48" style="vertical-align:-0.0pt" version="1.1" viewbox="0 0 11.025 11.425" width="11.025" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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										Ά
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</svg></span></td></tr><tr><td class="thead-hr" colspan="10"><hr/></td></tr><tr><td align="left">Si</td><td align="center">1.237</td><td align="center">3.132</td><td align="center">1.177</td><td align="center">2.9</td><td align="center">1.135</td><td align="center">2.6</td><td align="center">1.110</td><td align="center">2.4</td><td align="center"><b>0.51</b></td></tr><tr><td align="left">Si<sub>Na10%</sub></td><td align="center">1.25</td><td align="center">3</td><td align="center">1.2</td><td align="center">2.52</td><td align="center">1.15</td><td align="center">2.38</td><td align="center">1.12</td><td align="center">2.67</td><td align="center">0.46</td></tr><tr class="table-tr"><td colspan="10"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

Separation efficiency parameters of selected stationary phases using paraffins as probes.

Advances in Materials Science and Engineering

tab4

Table 4

Table 4: Alkali Metal Modification of Silica Gel-Based Stationary Phase in Gas Chromatography 