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National Repository of Grey Literature 3 records found  Search took 0.00 seconds. 
VOLTAMMETRIC DETERMINATION OF INSECTICIDE CHLORPYRIFOS AT MERCURY MENISCUS MODIFIED SILVER SOLID AMALGAM ELECTRODE
 Křeček, Matěj ; Barek, Jiří (advisor) ; Fischer, Jan (referee)
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VOLTAMMETRIC DETERMINATION OF INSECTICIDE CHLORPYRIFOS AT MERCURY MENISCUS MODIFIED SILVER SOLID AMALGAM ELECTRODE
 Křeček, Matěj ; Barek, Jiří (advisor) ; Fischer, Jan (referee)
Detailed record
Voltammetric Determination of 5-Nitrobenzimidazole at a Silver Amalgam Paste Electrode
 Chládková, Barbora ; Vyskočil, Vlastimil (advisor) ; Zima, Jiří (referee)
This bachelor's thesis concerns the determination of 5-nitrobenzimidazole (5-NBIA) by the methods DC voltammetry (DCV) and differential pulse voltammetry (DPV). A silver amalgam paste electrode (AgA-PE), which was prepared for this determination in the laboratory, was used as a working electrode. The optimum conditions for voltammetric determination of 5-NBIA were found and under these conditions, concentration dependences were measured and the limits of quantification (LQ) were calculated for each method. The media of BR-buffer pH 7.0 and pH 5.0 were chosen as optimum for DCV determination of 5-NBIA at AgA-PE and DPV determination of 5-NBIA at AgA-PE, respectively. For both DCV and DPV, the linear concentration dependences were obtained in concentration ranges of 5-NBIA from 2 × 10-7 mol/l to 1 × 10-4 mol/l. The attained LQ were found to be 6 × 10-7 mol/l (for DCV at AgA-PE) and 2 × 10-7 mol/l (for DPV at AgA-PE).
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