Sensitive and Simultaneous Determination of Hydroquinone and Catechol in Water Using an Anodized Glassy Carbon Electrode with Polymerized 2-(Phenylazo) Chromotropic Acid

<table class="table-group" id="tab2"><tr><td><table class="table"><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr class="thead"><td class="align_left">Interferences</td><td class="align_center">Current ratios (HQ)</td><td class="align_center">Current ratios (CT)</td></tr><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr><td class="align_left">Resorcinol</td><td class="align_center">1.00</td><td class="align_center">1.00</td></tr><tr><td class="align_left">2-Nitrophenol</td><td class="align_center">0.96</td><td class="align_center">0.98</td></tr><tr><td class="align_left">3-Nitrophenol</td><td class="align_center">0.95</td><td class="align_center">0.97</td></tr><tr><td class="align_left">4-Nitrophenol</td><td class="align_center">0.93</td><td class="align_center">0.96</td></tr><tr><td class="align_left">Bisphenol A</td><td class="align_center">1.00</td><td class="align_center">1.00</td></tr><tr><td class="align_left">4-Acetamidophenol</td><td class="align_center">0.99</td><td class="align_center">0.99</td></tr><tr><td class="align_left">NH<sub>4</sub><sup>+</sup></td><td class="align_center">1.00</td><td class="align_center">1.00</td></tr><tr><td class="align_left">Na<sup>+</sup></td><td class="align_center">0.98</td><td class="align_center">0.99</td></tr><tr><td class="align_left">Cl<sup>−</sup></td><td class="align_center">1.00</td><td class="align_center">1.00</td></tr><tr><td class="align_left">NO<sub>3</sub><sup>−</sup></td><td class="align_center">0.99</td><td class="align_center">1.00</td></tr><tr><td class="align_left">SO<sub>4</sub><sup>2−</sup></td><td class="align_center">1.00</td><td class="align_center">0.99</td></tr><tr class="table-tr"><td colspan="3"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Estimation of the oxidation current ratios of HQ and CT in the absence and presence of interferences.</div>

Journal of Chemistry

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Table 2

Table 2: Sensitive and Simultaneous Determination of Hydroquinone and Catechol in Water Using an Anodized Glassy Carbon Electrode with Polymerized 2-(Phenylazo) Chromotropic Acid 

Table 2 | Sensitive and Simultaneous Determination of Hydroquinone and Catechol in Water Using an Anodized Glassy Carbon Electrode with Polymerized 2-(Phenylazo) Chromotropic Acid 