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.
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Showing 1 to 5 of 5 for “"Ultraviolet Detector"”.
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Microwave-assisted sequential extraction of polyclic aromatic hydrocarbons and potentially toxic elements from urban environmental solids
… High performance liquid chromatography - ultraviolet detector was used for the determination of PAH. Flame atomic absorption spectrometry and inductively coupled plasma atomic emission spectrometry were as used for the determination of PTEs. The method was developed using certified …
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Nitrophenyl boronic acids as derivatizing agents in chromatography
… with flame ionization and electron capture detectors. Detection limits in the femtomole range were achieved with the EC detector. Solvent background and adsorption problems were found at the picomole level in some cases. The applicability of nitrophenyl boronates to HPLC analysis is …
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Impact of modified carbon dioxide mobile phases on detection on packed-column supercritical fluid chromatography
… can interfere with the use of most commonly used detectors like the flame ionization detector (FID) and ultraviolet detector (UV). Therefore, a detector is needed in which the modifier/additive does not interfere and detection is possible. Two such detectors are the electron capture detector (ECD) …
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Supercritical Fluid Chromatography of Ionic Compounds
Addition of a small amount of polar solvent (i.e. modifier) which contains an ionic component (i.e. additive) to a CO2 mobile phase has shown major improvement in the elution of ionic analytes via packed column supercritical fluid chromatography (SFC). Firstly, we focused on the elution of sodium …
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Zinc Oxide Nanorod Based Ultraviolet Detectors with Wheatstone Bridge Design
… zine oxide (ZnO) nanorod based ultra-violet (UV) detectors having a Wheatstone bridge design with a high</p> <p>responsivity at room temperature and above, as well as a responsivity that was largely independent of the change in ambient conditions. The ZnO nanorods which acted as the sensing …