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 20 of 657 for “"Chromatographic"”.
-
Chromatographic Separation of Metals
… explores the possibility of using a continuous chromatographic method to extract the lesser components of the irradiated fuel. One of the major problems with the use of chromatography as an industrial process is the expansion from the batch separations on the bench top to a continuous efficient …
-
Chromatographic Separation of Carbohydrates
… are reviewed. Also the theories concerning the chromatographic separation of sugar mixtures are presented and examples of industrial applications reported. The general performance of zeolites, anion and cation exchange resins for the separation of carbohydrate mixtures using batch analytical …
-
Continuous chromatographic biochemical reaction-separation
… on a moving port semi-continuous counter-current chromatographic reactor-separator (SCCR-S1) consisting of twelve 5.4cm id x 75cm long columns packed with calcium charged cross-linked polystyrene resin (KORELA V07C). The inversion of sucrose to glucose and fructose in the presence of the enzyme …
-
Multidimensional liquid chromatographic separations for proteomics
… (2DGE) of proteins and multidimensional liquid chromatographic separation (MuDPIT) of peptides, which rely on isoelectric focusing followed by mass separation in the former, and ion exchange followed by reversed phase separation in the latter. These methods have significant drawbacks in terms of …
-
The chromatographic separation of carbohydrate mixtures
… performance of a semicontinuous counter-current chromatographic refiner (SCCR7), consisting of twelve 5.4 cm id x 75cm long columns packed with calcium charged cross-linked polysytrene resin (KORELA VO7C), was optimised. An industrial barley syrup was used containing 42% fructose, 52% glucose and …
-
High efficiency gas-solid chromatographic columns
A study of two types of high efficiency gas chromatographic columns was conducted. The first type (micropacked) can be defined as columns having an internal diameter less than 1 mm and a particle/column diameter ratio between 0.1 and O.3 and a packing density comparable to conventional packed …
-
Anion exchange chromatographic analysis with conductometric detection
Thesis (M.S.)--Michigan State University. Dept. of Chemistry, 1971
-
Chromatographic Fractionation of the Hydrous Oxide Ions
Chromatography is the name given to a technique for the analysis of mixtures by passage of their solutions through an adsorbent column. The different constituents adsorb at different rates, and advantage is taken of this property to separate the components into different sections of the column. …
-
Bioreaction and separation in batch chromatographic columns
… study the behaviour and performance of a batch chromatographic column under simultaneous bioreaction and separation conditions for several carbohydrate feedstocks. Four bioreactions were chosen, namely the hydrolysis of sucrose to glucose and fructose using the enzyme invertase, the hydrolysis …
-
A Fast-Response Odor Chromatographic Sniffer (FOX)
This thesis in microscale gas chromatography (μGC) creates a paradigm shift in rapidly analyzing chemicals in the environment or analytes. We are looking for unexpected chemical changes that have been added purposefully or unintentionally. The work examines various aspects of μGC technology, …
-
Gas chromatographic studies of drugs of abuse
1. The sensitivity obtained even with the free compounds (except morphine) make gas chromatography a good technique for trace analysis of drugs in biological samples. 2. For many of the drugs studied the detector response curves are not linear with sample concentration but the calibration curves …
-
Comparison of high performance liquid chromatographic, gas liquid chromatographic, and Saccharomyces uvarum methods for the determination of B{u2086} compounds
A high performance liquid chromatographic (HPLC) system consisting of an acetonitrile/phosphate buffer, a Spherisorb ODS column, and UV detector was used to separate the B₆ compounds pyridoxol, pyridoxal, pyridoxamine, and 4'-deoxypyridoxine. A gas chromatography (GC) equipped with a ⁶³Ni electron …
-
Microextraction and gas chromatographic determination of organotin compounds /
… form, are non-volatile and polar, so before gas chromatographic analysis OTC must be derivatized. Sodium tetraethylborate has been used for the derivatization. Derivatization conditions (pH, derivatization time, derivatization reagent concentration) have been examined, gas chromatographic-mass …
-
Comparison of selected radiopharmaceutical chromatographic quality control procedures
<p>The purpose of this study was to compare the accuracy and reproducibility of two commercially available chromatography kits with Instant Thin Layer Chromatography-Silica Gel (ITLC-SG) and Whatman Chromatography Paper. The two commercial kits evaluated were the- MAC Klt- produced-General …
-
The cross-flow chromatographic separation of carbohydrate mixtures
… aspects of chromatography and of continuous chromatographic techniques. A pilot-scale rotating annular chromatograph has been constructed consisting of two concentric cylinders which form an annulus 1.4m in length and 12mm wide. The annular space is filled with ion-exchange resin. The upper …
-
Scale-Up of the Semi-Continuous Chromatographic Process
… to a better understanding of the gas/- liquid chromatographic scale-up problem. The potential of several proposed process schemes for production-scale separations is discussed. Colum utilisation can be increased, with respect to the conventional batch process, by employing a counter-current …
Page 1 of 33