Electrochemical determination of melatonin hormone using a boron-doped diamond electrode
DOI: 10.1016/J.DIAMOND.2011.10.018
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摘要: Abstract In this study, a boron-doped diamond electrode was used for the electroanalytical determination of melatonin in pharmaceutical tablet and urine samples by square-wave voltammetry. Melatonin yielded well-defined voltammetric response Britton-Robinson buffer, pH 3.0 at + 0.88 V (vs. Ag/AgCl). Using optimal voltammetry conditions, oxidation peak to determine concentration range 5.0 × 107 M 4.0 × 106 M (r = 0.998, n = 8), detection limit 1.1 × 107 M (0.025 μg/mL) relative standard deviation 2.06% 2.0 × 106 M level (n = 10). Recoveries were 97.67–105%, both spiked human samples.
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