Synthesis of a New Calix[4]Arene and Its Application in Construction of a Highly Selective Silver Ion-Selective Membrane Electrode

<table>Potentiometric titration curve of 25.0 mL of 1.0 <svg height="8.7875004" id="M68" style="vertical-align:-0.3135pt" version="1.1" viewbox="0 0 10.125 8.7875004" width="10.125" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,8.7875)">
<g transform="translate(72,-64.97)">
<text transform="matrix(1,0,0,-1,-71.95,65.34)">
<tspan style="font-size: 12.50px; " x="0" y="0">×</tspan>
</text>
</g>
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</svg> 10<sup>-4</sup> M Ag<sup>+</sup>  solution with a standard solution of 1.0 <svg height="8.7875004" id="M69" style="vertical-align:-0.3135pt" version="1.1" viewbox="0 0 10.125 8.7875004" width="10.125" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,8.7875)">
<g transform="translate(72,-64.97)">
<text transform="matrix(1,0,0,-1,-71.95,65.34)">
<tspan style="font-size: 12.50px; " x="0" y="0">×</tspan>
</text>
</g>
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</svg> 10<sup>-2</sup> M of EDTA with the silver sensor as indicator electrode (membrane number 9).</table>

Organic Chemistry International

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Figure 5

Figure 5: Synthesis of a New Calix[4]Arene and Its Application in Construction of a Highly Selective Silver Ion-Selective Membrane Electrode 