Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 17 of 17 for “"amperometric detection"”.
-
Determination of formaldehyde by ion exclusion and ion exchange separation with amperometric detection
… and ion exchange separation followed by amperometric detection. Optimum eluant compositions and separation columns for the best separation have been determined, as well as the optimum working electrode, electrolytes, and applied potentials for the best detection. An internal …
-
Rapidly Scanning Coulostatic Liquid Chromatography/electrochemistry Combined With Conventional Amperometric Detection in a Series Dual-Electrode Cell
The technique of rapidly scanning coulostatic pulse amperometry is combined with conventional fixed-potential amperometry in a series dual-electrode cell to create a novel detector for high performance liquid chromatography. After a preliminary period of electrode evaluation, a flow cell was …
-
Chemical composition and fiber structure as factors affecting fiber fermentation
… anion exchange chromatography and pulsed amperometric detection, resulted in superior separation and detection of the monosaccharides compared to current HPLC techniques employing refractive index. An anion exchange HPLC technique with pulsed amperometric detection for the analysis of …
-
Development of electrochemical detection for capillary electrophoreses
… reliable and sensitive electrochemical (EC) detection for capillary electrophoresis. To achieve this goal, electrochemical behavior of the electrolyte and analytes and the factors affecting the behavior were studied by on-line cyclic voltammetry (CV) to understand electrode response. The …
-
High-performance liquid chromatographic methods for quantitative assessment of degradation products and extractives in pretreated lignocellulose.
… A reversed-phase HPLC method with UV detection is developed for simultaneous separation and quantitation of organic acids and neutral degradation products present in the corn stover hydrolysate. On the other hand, inorganic ions and some organic anions which present in water extractive …
-
Development and characterization of novel detectors for use in flow injection analysis or liquid chromatography
… resistance and analyte band spreading in the detection zone. The detector was evaluated in terms of its minimum detectable quantity, linear dynamic range, electrochemical efficiency, and analyte band spreading. The MDQ was found to be in the low parts per billion range for hydroquinone. The …
-
Electrochemical immunosensor based on cyclodextrin supramolecular interactions for the detection of human chorionic gonadotropin
… are important enzymes for the development of amperometric enzyme linked immunosensors. The selectivity of each enzyme towards its analyte deepens its importance in determining the sensitivity of the resultant immunosensor. In designing immunosensors that have customized transducer surfaces, …
-
Electrochemical Immunosensor based on Cyclodextrin Supramolecular interactions for the detection of human chorionic gonadotropin
… are important enzymes for the development of amperometric enzyme linked immunosensors. The selectivity of each enzyme towards its analyte deepens its importance in determining the sensitivity of the resultant immunosensor. In designing immunosensors that have customized transducer surfaces, …
-
Electrochemical immunosensor based on cyclodextrin supramolecular interactions for the detection of human chorionic gonadotropin
… are important enzymes for the development of amperometric enzyme linked immunosensors. The selectivity of each enzyme towards its analyte deepens its importance in determining the sensitivity of the resultant immunosensor. In designing immunosensors that have customized transducer surfaces, …
-
A Selectivity Study on the Use of Caffeine and Theobromine Imprinted Polypyrrole Surface Electrodes
… conducting polymer matrix, 2) comparing pulsed amperometric detection (PAD) and electrical impedance spectroscopy (EIS), for their value as potential detection schemes and 3) to determined the applicability of the molecularly imprinted polypyrrole by analyzing commercial samples of instant …
-
Nature of Large Vesicle Exocytosis in Pancreatic β-cells: Release of ATP and GABA
… on the cell membrane permitted the electrical detection of minute (amoles) quantities of ATP and thus created a possibility to measure ATP released from a single insulin granule. The release of peptides and low molecular weight substances was explored by combining the detection of exocytotic …
-
Improved analytical methods for carbohydrate analysis in biofuel research.
… liquid chromatography with refractive index detection (HPLC-RI) and a ligand-exchange column is the standard method the biofuels industry utilizes for interrogation of carbohydrates in research samples. Overall, the HPLC-RI methods have proven to be both robust and easy to use, providing a …
-
DEVELOPMENT OF MICROCHIP ELECTROPHORESIS BASED METHODS TO PROFILE CELLULAR NITROSATIVE STRESS
… diseases. A method for the simultaneous detection of prooxidants and antioxidants associated with nitrosative stress in biological samples would be beneficial for better understanding of their role in disease states. Therefore, in this dissertation a separation-based approach is described …
-
Design And Characterization Of An Embedded Amperometric Analyzer For Field-Portable Electrochemical Applications
A novel miniaturized amperometric analyzer with enhanced performance was developed to meet the need of field-portable, wide adaptable, user friendly, and cost effective electrochemical detection in various application fields. Based on the new MSP430FG479 microcontroller, the embedded system was …
-
Rapid separation of phenolic flavourings by liquid chromatography and nanomolar electrochemical detection at a boron-doped diamond electrode
… and anti-microbial. Their investigation and detection in plants, food and beverages require the development of rapid, selective and sensitive analytical methods. In this thesis, an overview of plant secondary metabolites, their classification and physiological properties are given. The …
-
Physicochemical studies of a novel adjuvant and conjugate vaccines
… anion exchange chromatography with pulsed amperometric detection (HPAEC-PAD) were investigated for saccharide quantification in Mn A-TT vaccines. The HPAEC-PAD method for the monomer (mannosamine-6-phosphate from acid hydrolysis) permitted higher specificity and sensitivity for the free …
-
Development of stationary phase materials and methods for analysis of pharmaceuticals via high-performance liquid chromatography and electrochemical detection
… placed on the rapid separation and sensitive detection of the local anaesthetic TCH and the nasal decongestant OZH combining the high separation efficiencies and the short analysis time of core-shell silica particles with the sensitivity of a BDD electrode. The chromatographic separation was …