Relevant bibliographies by topics / Diferenční pulzní voltametrie (DPV) / Dissertations / Theses
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Dissertations / Theses on the topic 'Diferenční pulzní voltametrie (DPV)'

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Published: 4 June 2021
Last updated: 1 February 2022

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1

Polický, Jiří. "Využití uhlíkových nanotrubic pro realizaci elektrod tlustovrstvých senzorů." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2010. http://www.nusl.cz/ntk/nusl-218685.

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This work covers an area of heavy metals detection by miniaturized thick film sensors. Working electrode of these sensors was fabricated using thick film paste that was prepared as a nanocomposition of carbon nanotubes powder, suitable vehicle and a thinner. The response of fabricated electrodes to cadmium and lead ions was measured using differential pulse voltammetry in an acetate buffer solution using a three electrode sytem. The results were compared with the carbon electrode made from special commercial thick film polymer paste. Finally the possibility of working electrode surface activat
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Matouš, Petr. "Voltametrické stanovení vybraných psychofarmak pomocí uhlíkových elektrod." Master's thesis, 2019. http://www.nusl.cz/ntk/nusl-396825.

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Differential pulse voltammetry (DPV) was used for developing a method for the determination of phenothiazine derivatives, namely chlorpromazine (CHP) and levomepromazine (LMP), using a glassy carbon electrode (GCE) and a graphite electrode, both with a 2 mm disc diameter. Comparison of quantification limits (LQ) for both substances on both electrodes was performed. After optimizing and processing the results, the optimal conditions for measuring calibrations were as follows: Britton- Robinson (BR) buffer at pH 4.0. Calibration dependences were measured inthe concentration range from 1·10-7 to
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3

Jílková, Eva. "Izolace bakteriálních buněk pomocí paramagnetických částic." Master's thesis, 2012. http://www.nusl.cz/ntk/nusl-166610.

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4

Ječmínková, Jana. "Voltametrické stanovení chloramfenikolu a ofloxacinu na borem dopované diamantové filmové elektrodě." Master's thesis, 2011. http://www.nusl.cz/ntk/nusl-296342.

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Voltammetric methods for the determination amphenicol antibiotic chloramphenicol (CAP) and quinolone antibiotic Ofloxacin (OFL) were developed. TTechniques differential pulse voltammetry (DPV) and DC voltammetry (DCV) for determination of both substances at boron doped diamond film electrode (BDDFE) were used. The effect of pH of Britton-Robinson buffer was tested and the stability of the signal with repeated measurements was monitored. Optimal pH 6 was used for determining of CAP by both, DPV and DCV techniques. Media of pH 4 for determining of OFL by DPV and DCV was optimal. Under thes
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5

Libánský, Milan. "Konstrukce měřící cely s elektrodou na bázi uhlíkového filmu." Master's thesis, 2013. http://www.nusl.cz/ntk/nusl-330713.

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This Thesis deals with the construction of an electrochemical cell with two types of integrated composite electrodes based on carbon films. Using these electrodes, the voltammetric behavior of environmental pollutant triclosan (5-chlor-2-(2,4- dichlorophenoxy)phenol) was studied. For the construction of composite electrodes, graphite and glassy carbon were used as conductive microparticles. Several types of polymers served as the nonconductive binder. For the measurements, combinations of graphite with polystyrene and graphite with polycarbonate were selected as optimum materials. From the dep
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6

Samiec, Petr. "Voltametrické stanovení diazepamu a nordiazepamu na meniskem modifikované stříbrné pevné amalgámové elektrodě." Master's thesis, 2013. http://www.nusl.cz/ntk/nusl-324640.

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Voltammetric methods for the determination of diazepam (DZ) and nordiazepam (NDZ) were developed. Techniques differential pulse voltammetry (DPV) and DC voltammetry were used for determination of DZ and NDZ at meniscus modified silver solid amalgam electrode (m-AgSAE). The effect of pHa on the intensity of signal was observed in the mixture of Britton-Robinson buffer and methanol (9:1), and in the mixture of 0.1 mol.l−1 NaOH and methanol (9:1). The stability of the signal during repeated measurements in the mixture of 0.1 mol.l−1 NaOH and methanol (9:1), and in the mixture of BR buffer and met
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7

Havlíková, Štěpánka. "Voltametrické stanovení chloramfenikolu a chlorambucilu na amalgámových elektrodách." Master's thesis, 2015. http://www.nusl.cz/ntk/nusl-331222.

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This diploma thesis is focused on the determination of chloramphenicol by differential pulse voltammetry (DPV), DC voltammetry (DCV), cyclic voltammetry (CV) and adsorptive stripping voltammetry (AdSV) on a meniscus modified silver solid amalgame electrode (m- AgSAE). For the determination of chloramphenicol the optimum conditions were found and under these conditions concentration dependences were measured and then limits of quantification were determined. The influence of pH of BR buffer was tested. For determination of chloramphenicol by DCV pH 7 was chosen as an optimum background and pH 8
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8

Humpolíková, Jiřina. "Elektrochemické stanovení 6-thioguaninu na borem dopované diamantové filmové elektrodě." Master's thesis, 2013. http://www.nusl.cz/ntk/nusl-322169.

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This master's thesis is focused on the determination of 6-thioguanine (6-T) by DC voltammetry (DCV), differential pulse voltammetry (DPV) and flow injection analysis with electrochemical detection (FIA-ED) on a boron doped diamond electrode (BDDFE). The optimum conditions for determination of 6-T were found and under these conditions, concentration dependences were measured and the limits of quantification (LOQ) were calculated for each method. Medium of 60% methanol and phosphate buffer (PB) pH 2,0 was chosen as optimum for DCV and DPV determination of 6-T at BDDFE. For both DCV and DPV, the
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9

Šmejkalová, Hana. "Velkoplošná uhlíková filmová elektroda - nový senzor pro voltametrické stanovení elektrochemicky oxidovatelných organických sloučenin." Master's thesis, 2013. http://www.nusl.cz/ntk/nusl-322155.

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of the Diploma Thesis In this Diploma Thesis, the electrochemical behavior of 4-nitrophenol (4-NP) was studied at a newly prepared large-surface carbon film electrode (ls-CFE) using techniques of DC voltammetry (DCV) and differential pulse voltammetry (DPV) with the aim to develop sensitive analytical methods for its determination. Voltammetric behavior of 4-NP was investigated in the region of anodic potentials, in dependence on the pH of the medium used (realized using Britton-Robinson buffer). The optimum pH values for the determination of 4-NP were chosen as follows: pH 3.0 (for DCV) and p
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10

Krejčová, Markéta. "Stanovení butylhydroxyanisolu na elektrodách modifikovaných uhlíkovými nanotrubičkami." Master's thesis, 2015. http://www.nusl.cz/ntk/nusl-342916.

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This work was focused on study of a behaviour of the food additivum butylated hydroxyanisole on modified carbon electrodes by the voltammetric techniques - cyclic and differential pulse voltammetry. Glassy carbon and carbon paste electrode were used. Multiwalled carbon nanotubes (MWCNT) in combination with three different binders (acetonitrile, nafione or chitosane) were employed for the electrode modification. Carbon paste electrode was unable to modificate with film containing carbon nanotubes and acetonitrile, its active surface was treated only with nafione and chitosane film. All three me
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11

Šmídková, Monika. "Voltametrické stanovení 5-nitroimidazolu - strukturní jednotky nitroimidazolových léčiv." Master's thesis, 2013. http://www.nusl.cz/ntk/nusl-324134.

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Presented Diploma Thesis deals with the study of electrochemical behavior of 5-nitroimidazole (5-NI), with the search for optimal conditions for its determination using techniques of DC voltammetry (DCV) and differential pulse voltammetry (DPV) at a mercury meniscus modified silver solid amalgam electrode (m-AgSAE) and at a boron-doped diamond film electrode (BDDFE), and with the comparison of reached limits of quantification (LQs). The optimal conditions found for measuring calibration dependences of 5-NI at the m-AgSAE in deionized water were as follows: Britton-Robinson buffer of pH 7.0 and
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12

Horáková, Eva. "Voltametrické stanovení genotoxických nitrobifenylů." Master's thesis, 2012. http://www.nusl.cz/ntk/nusl-304407.

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The presented diploma thesis is devoted to study of determination of 4-nitrobiphenyl (4-NBP) in model river water by DC voltammetry (DCV) and differential pulse voltammetry (DPV) at m-AgSAE (diploma thesis relates to bachelor thesis, in it DCV and DPV methods for determination of 4-NBP in deionized water were developed). Limit of determination (LOD) is 2·10-7 mol·l-1 by DCV and 4·10-7 mol·l-1 by DPV. The adsorptive stripping DPV (AdSDPV) technique was tested to archive lower LOD the AdSDPV, optimal conditions were not found. Electrochemical behavior of 2-nitrobiphenyl (2-NBP) at m-AgSAE was st
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13

Vyvadil, Jan. "Voltametrické stanovení pentritu pomocí rtuťových a stříbrných amalgamových elektrod." Master's thesis, 2015. http://www.nusl.cz/ntk/nusl-342940.

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This Diploma Thesis is focused on investigation of the voltammetric behavior of the explosive penthrite (pentaerythritol tetranitrate) (PETN) and on searching for optimum conditions for its determination using differential pulse voltammetry (DPV) at a hanging mercury drop electrode (HMDE) (this part of the Diploma Thesis follows the topic investigated in the author's Bachelor Thesis; in this Diploma Thesis, the results of the Bachelor thesis are applied to the determination of PETN in environmental matrices) and at a mercury meniscus modified silver solid amalgam electrode (m-AgSAE) and on inv
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14

Křížová, Tereza. "Voltametrické stanovení vybraných nitroaromatických výbušnin." Master's thesis, 2012. http://www.nusl.cz/ntk/nusl-307821.

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This Diploma Thesis is focused on study of electrochemical behavior of 2,4,6-trinitrotoluene (TNT) and 2,4,6-trinitrophenol (picric acid) on finding the optimum conditions for their determination using direct current voltammetry (DCV) and differential pulse voltammetry (DPV) at a mercury meniscus modified silver solid amalgam electrode (m-AgSAE) in the solution of Britton-Robinson (BR) and on finding of the limit of quantification (LQ) for these substances. Practical applicability of the newly developed methods was verified on direct determination of TNT and picric acid in model samples of dri
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15

Škvorová, Lucie. "Voltametrické stanovení vybraných nitroimidazolových léčiv." Master's thesis, 2012. http://www.nusl.cz/ntk/nusl-308284.

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The aim of presented Diploma Thesis was to study an electrochemical behavior of nitroimidazole drugs metronidazole and ornidazole and to find optimal conditions for their voltammetric determination at a mercury meniscus modified silver solid amalgam electrode using DC voltammetry (DCV) and differential pulse voltammetry (DPV). Voltammetric behavior of selected drugs was investigated in dependence on the pH of the medium used (realized using a Britton-Robinson buffer (BR buffer)) and a mechanism of the reduction of both drugs was investigated using cyclic voltammetry (CV). The optimum medium fo
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16

Skalová, Štěpánka. "Vývoj nových elektrochemických metod s využitím různých membránových materiálů pro sledování vybraných protinádorových léčiv a fytochelatinů." Doctoral thesis, 2019. http://www.nusl.cz/ntk/nusl-405532.

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Present Ph.D. Thesis is focused on the development of electrochemical methods for determination of anticancer drugs using various types of membranes for their preliminary separation. Furthermore, this Thesis reports the study of transport mechanisms of heavy metals in the presence of phytochelatins across biological membranes. Sodium anthraquinone-2-sulphonate (AQS) was used as a model compound for its similar structure with anthraquinone-based (AQ-based) anticancer drugs (doxo/daunorubicin) and also due to its better availability. All these compounds can be easily electrochemically oxidized a
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