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 8 of 8 for “"aqueous sample"”.
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Raman Spectroscopy for Monitoring of Microcystins in Water
… cyanotoxin variants potentially present in an aqueous sample. The use of Raman spectroscopy for identification and quantification of the ubiquitous cyanotoxin microcystin-LR (MC-LR) was examined. Raman spectra readily reflect minute changes in molecular structure, spectra can be collected …
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A Deuterium Labeling Method for the Characterization of (Chromophoric) Dissolved Organic Matter Using Ultrahigh Resolution Electrospray Ionization Mass Spectrometry
… emission of chromophoric DOM. In this method, an aqueous sample is treated with sodium borodeuteride (NaBD4) and is analyzed via ultrahigh resolution electrospray ionization (ESI) mass spectrometry. Ketone/aldehyde-containing species (at mass m) in the untreated sample are identified by searching …
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Development of multi-residue and selective methods for the ultra-sensitive determination of endocrine disrupting chemicals in aqueous samples
… environmental matrix is very complex. Therefore, sample clean-up en pre-concentration of the sample is necessary before analysis. In this framework, the current work focuses on the optimization of the sample preparation in order to develop selective and multi-residue methods for the determination …
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A cylindrical specimen holder for electron cryo-tomography
… specimens, the tubes are filled with an aqueous sample and then plunge-frozen in liquid ethane. Electron images acquired from the tubes have equal quality at all viewing angles, with a tilt range restricted only by the physical limits of the microscope. Tomograms from specimens such as …
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A cylindrical specimen holder for electron cryo-tomography
… specimens, the tubes are filled with an aqueous sample and then plunge-frozen in liquid ethane. Electron images acquired from the tubes have equal quality at all viewing angles, with a tilt range restricted only by the physical limits of the microscope. Tomograms from specimens such as …
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Development of a low-power molecular microwave plasma and its application as an atom source for atomic spectroscopy
… and atomization properties. It can handle aqueous sample flows of around 1 mL/min, introduced as an aerosol from a nebulizer. A detection system and sampling system were designed and an analytical instrument was built around the HEMMP cavity. Details of construction, operating conditions …
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Development Of Electrochemical Sensors And Non-Covalent Monolayer Modification Of Graphene
… buffer from the ion-selective membrane into the aqueous sample could not be prevented, resulting in potential drifts. In this work, a new class of polymeric redox buffers was prepared by attaching redox couples to polymers through covalent bonds and using these polymeric redox buffers for the …
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Supercritical Fluid Extraction Directly Coupled with Reversed Phase Liquid Chromatography for Quantitative Analysis of Analytes in Complex Matrices
… whether any degradation occurs during the sample-processing step in the analytical laboratory. On-line coupling of SFE-LC with UV absorbance/ electrospray ionization mass spectrometry (SFE-LC-UV/ESI-MS) provided an air/light free extraction-separation-detection system, which addressed this …