Fluorescence Turns on-off-on Sensing of Ferric Ion and L-Ascorbic Acid by Carbon Quantum Dots

<table class="table-group" id="tab3"><tr><td><table class="table"><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr class="thead"><td class="align_left">Sample</td><td class="align_center">Added (<i>μ</i>M)</td><td class="align_center">Found (<i>μ</i>M)</td><td class="align_center">Error (%)</td><td class="align_center">Recovery (%)</td></tr><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr><td class="align_left" rowspan="4">Orange fruit</td><td class="align_center">0.125</td><td class="align_center">0.121</td><td class="align_center">3.2</td><td class="align_center">96.8</td></tr><tr><td class="align_center">0.310</td><td class="align_center">0.298</td><td class="align_center">3.8</td><td class="align_center">96.0</td></tr><tr><td class="align_center">0.520</td><td class="align_center">0.515</td><td class="align_center">0.95</td><td class="align_center">99.0</td></tr><tr><td class="align_center">0.710</td><td class="align_center">0.685</td><td class="align_center">3.5</td><td class="align_center">96.0</td></tr><tr class="table-tr"><td colspan="5"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Determination of ascorbic acid in the real sample.</div>

Journal of Food Quality

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Table 3

Table 3: Fluorescence Turns on-off-on Sensing of Ferric Ion and L-Ascorbic Acid by Carbon Quantum Dots 