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 10 of 10 for “"Excitation-emission matrices"”.
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Improvements on Instrumentation to Explore the Multidimensionality of Luminescence Spectroscopy
… data formats such as wavelength time matrices, excitation emission matrices, time-resolved excitation emission matrices and time resolved excitation emission cubes is made possible with the combination of a pulsed tunable dye laser, a spectrograph and an intensifier-charged coupled …
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Hartley transform based algorithm for the qualitative and quantitative analysis of multi-component mixtures with the use of emission excitation matrices
… analysis of multi-component mixtures using Excitation Emission Matrices. The algorithm involves the reverse search of a compressed reference spectral library for the identification of possible components of the mixture and the method of Non-Negative Least Squares for the quantification of …
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The Development and Deployment of Sensors and Algorithms for the Mobile Monitoring of Urban Surface Water Quality
… tools, and algorithms for analyzing fluorescence excitation emission matrices. The data pipeline and algorithms are employed to investigate the identification and quantification of algae in complex mixtures. The final chapter describes the development and characterization of a field-deployable …
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Dissolved organic material in groundwater and application of fluorescence spectroscopy coupled with EEM PARAFAC models as a means of site characterisation
… 3,500% during initial abstraction. Analysis of excitation emission matrices (EEMs) and absorption data demonstrated that the increased DOC and an increase in relative molecular weight of dissolved organic matter (DOM) was likely due to biofilm shearing. The fourth stage split a set of EEMs from …
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Total N-nitrosamine Precursor Adsorption with Carbon Nanotubes: Elucidating Controlling Physiochemical Properties and Developing a Size-Resolved Precursor Surrogate
… detection (FLD) and whole water fluorescence excitation-emission matrices (EEMs). TONO precursor surrogates were discovered, capable of predicting changes in TONOFP in WWTP samples that have undergone oxidation (R2 = 0.996) and sorption (R2 = 0.576). Importantly, both surrogates only require …
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Microbial Degradability of Terrigenous, Marsh-Exported, and Estuarine Colored Dissolved Organic Matter in Long Island Sound
… spectral slopes) and spectrofluorometry (FDOM excitation-emission matrices). Dissolved organic carbon (DOC), mass spectrometry (FT-ICR-MS), and microbial count samples were also taken at each measurement point.</p> <p>Our results emphasize the impact of terrigenous and anthropogenic DOM on …
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Marsh-Exported Dissolved Organic Matter Fate in Estuaries
… spectral slopes) and spectrofluorometry (FDOM excitation-emission matrices analyzed using parallel-factor analysis, PARAFAC). 0.2 μm filters were used for “photochemical-only” treatments, whereas glass-fiber filters (GF/Fs) were used for microbial treatments. Initial results indicated the …
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Redox cycling of colloidal macro- and micro-nutrients in a monomictic lake
… molecules' fluorescent properties. The resulting excitation-emission matrices (EEM's) were analyzed using parallel factor analysis (PARAFAC), identifying two humic-like fluorophores and one protein-like fluorophore in both colloidal and dissolved size fractions. DOM in the lake showed marked …
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Fluorescence Based Approach to Drinking Water Treatment Plant Natural Organic Matter (NOM) Characterization, Treatment, and Management
… 254 nm (UV254)), bromide content, fluorescence excitation-emission matrices (EEM), and disinfection by-product and total organic halogen formation potential (DBPFP and TOX-FP) were determined for the samples before and after coagulation. Parallel factor analysis (PARAFAC) was applied in order to …