Application of unmodified boron-doped diamond electrode for determination of dopamine and paracetamol

Electrochemical Determination of Vitamin D3 in Pharmaceutical Products by Using Boron Doped Diamond Electrode

“…In order to find optimum content of ethanol, different ratios of ethanol with BRB as the supporting electrolyte were tested (30,40,50,60, 96 % of ethanol), with varying concentration of vitamin D 3 (25, 50 and 100 μmol dm À 3 ). The results showed that, due to insufficient solubility of vitamin D 3 in BRB containing 30 % of ethanol, the analytical signal could not be detected, whereas with increase of ethanol content up to 50 % the signal increased, with subsequent decrease, caused by increase of the ethanol content in BRB.…”

“…The boron-doped diamond electrode (BDDE) has been extensively used in electrosynthesis and electroanalysis. Due to superior electrochemical properties that include wide potential window, low background and capacitive current, reduced fouling and chemical stability, boron-doped diamond presents also an attractive material for electrochemical detection of organic compounds in pharmaceutical and environmental samples [26][27][28][29][30][31][32]. Very recently, BDDE was used for electrochemical oxidation of cholecalciferol in order to generate vitamin D metabolites [33], but not for analytical purposes.…”

Analytical Applications of Electrochemically Pretreated Boron‐Doped Diamond Electrodes

“…The electrochemical activity is thus adjusted to attain, for example, a higher sensitivity and selectivity, besides a lower adsorption . In some instances, BDDEs have been used without any electrochemical pretreatments in the determination of different analytes, with satisfactory analytical results and good repeatability, e. g . However, in most such cases, since comparisons with the electrochemical signals from the same BDDEs when electrochemically pretreated were not reported at all, the question of whether better results could be attained with a CPT‐BDDE or an APT‐BDDE remains unanswered.…”

“…In a few of those cases, when a free‐standing BDD was used, the BDDE was simply polished, as first done by Marken et al . ; comparisons between the electrochemical activities for the respective analyte after different pretreatments (polish, PTA or PTC) were performed in two cases, with better results after the polish procedure. More extensive such comparisons would be welcome.…”

“…The electrochemical activity is thus adjusted to attain, for example, a higher sensitivity and selectivity, besides a lower adsorption. [19,107,118,119] In some instances, BDDEs have been used without any electrochemical pretreatments [118][119][120][121][122][123][124][125][126][127][128][129][130][131][132][133][134][135][136] in the determination of different analytes, with satisfactory analytical results and good repeatability, e. g. [120,126] However, in most such cases, since comparisons with the electrochemical signals from the same BDDEs when electrochemically pretreated were not reported at all, the question of whether better results could be attained with a CPT-BDDE or an APT-BDDE remains unanswered. In a few of those cases, [133][134][135][136] when a free-standing BDD was used, the BDDE was simply polished, as first done by Marken et al; [77] comparisons between the electrochemical activities for the respective analyte after different pretreatments (polish, PTA or PTC) were performed in two cases, [135,136] with better results after the polish procedure.…”