Field Determination of Phosphate in Environmental Water by Using a Hand-Powered Paper Centrifuge for Preconcentration and Digital Image Colorimetric Sensing

<table class="table-group" id="tab1"><tr><td><table class="table"><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr class="thead"><td class="align_left">Compound</td><td class="align_center">Relative sensitivity to phosphate (%)</td></tr><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr><td class="align_left">Cetyltrimethylammonium bromide (CTAB)</td><td class="align_center">84.9 ± 4.6</td></tr><tr><td class="align_left">Sodium dodecyl sulfate (SDS)</td><td class="align_center">98.5 ± 1.5</td></tr><tr><td class="align_left">Ethylenediaminetetraacetic acid (EDTA)</td><td class="align_center">79.1 ± 7.3</td></tr><tr><td class="align_left">Silicate</td><td class="align_center">98.4 ± 2.0</td></tr><tr class="table-tr"><td colspan="2"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Effects of possible interfering species (100 <i>μ</i>M) on measuring phosphate (2.5 <i>μ</i>M) via the PMB-SPE method (<i>n</i> = 3).</div>

Journal of Analytical Methods in Chemistry

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Table 1

Table 1: Field Determination of Phosphate in Environmental Water by Using a Hand-Powered Paper Centrifuge for Preconcentration and Digital Image Colorimetric Sensing 

Table 1 | Field Determination of Phosphate in Environmental Water by Using a Hand-Powered Paper Centrifuge for Preconcentration and Digital Image Colorimetric Sensing 