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Showing 1 to 16 of 16 for “"Transform Infrared Spectrometry"”.
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Hyphenated fourier transform infrared spectrometry: techniques for separations and analysis
… to fall in the low (10 - 25) ng range. The infrared spectra are enhanced over those acquired with a flow cell interface because CO₂ absorbance bands no longer obscure a portion of the analyte absorption spectrum.
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Toward Rapid Silica Analysis of CPDM Samples using Portable Fourier Transform Infrared Spectrometry
… stub using portable direct-on-filter Fourier Transform infrared spectroscopy (DOF-FTIR) to rapidly quantify quartz, the primary analyte of silica in coal mines. The research consisted of four studies that developed and evaluated a three-step process for dust recovery, deposition, and analysis. …
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Supercritical fluid extraction/chromatography and Fourier transform infrared spectrometry: methods optimization and applications
… fluid chromatography (SFC) and Fourier transform infrared spectrometry (FT-IR). In order to study the effects of a supercritical mobile phase on the resulting IR spectra, carbon dioxide was compared to xenon as a supercritical fluid mobile phase for flow cell SFC/FT-IR. A packed …
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Metal/polymer interactions
… electron microscopy, as well as, surface Fourier transform infrared spectrometry have been used to characterize both the surface and interfacial regions of these films.
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Spectral Signature Modification By Application Of Infrared Frequency-selective Surfaces
… signature of a surface, particularly in the infrared (IR) region of the electromagnetic spectrum. To alter the surface signature in the IR, two methods are investigated: thin film application and antenna array application. The former approach is a common and straightforward incorporation of …
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Effects Of De-Polymerization Of Cellulose In Producing Sugar From Cellulosic Biomass At Low-Temperature
… glucose is the only product produced. Fourier transform infrared spectrometry (FTIR) results showed a sharp peak in both 3400cm-1 and 1500 cm-1 region for pretreated samples, which explains less hydrogen bonding can allow urea hydrates self-assembled at the surface of the NaOH for enzymatic …
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Enantiomeric separations by HPLC:temperature, mobile phase, flow rate and retention mechanism studies
… attached to a l000-Å gold surface, with Fourier-Transform Infrared Spectrometry in a Reflectance-Absorbance mode, to probe the specific molecular interactions which make possible the diasteriomeric complex. This <i>in situ</i> experiment, in contrast to previous <i>ex situ</i>, stationary phase …
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Assessment of coal liquefaction behavior through product characterization with hyphenated chromatographic/spectroscopic methods
… by Inductively Coupled Plasma Atomic Emission Spectrometry (ICP-AES) and Size Exclusion Chromatography/ICP-AES (SEC/ICP-AES). Pates of basic nitrogen components in distillate and solvent-soluble residuum products were examined by nitrogen mass balance determinations, Gas Chromatography/Pourier …
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Photoluminescence Study of Defects in Mercury Cadmium Telluride
Submitted by Meng Tao (mengtao2@illinois.edu) on 2012-10-12T20:59:11Z No. of bitstreams: 1 Furstenberg_Robert.pdf: 3021685 bytes, checksum: 9b448a1e45eb387f0bf81d018a5a9ff9 (MD5)
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Porous Silicon as a Proton Exchange Membrane for Direct Methanol Fuel Cells
… of the addition of a second layer, Fourier Transform Infrared Spectrometry was conducted on a number of samples to verify the methanol concentration for each layer. Additionally, a pH test was conducted to measure the relative amounts of protons dissolved in solution between the layers.
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Development of pyrolysis models of composite materials for fire safety engineering
… analysis technique (STA) coupled with Fourier Transform Infrared Spectrometry (FTIR) at different heating rates and atmospheres. The results show that thermal decomposition of PP follows single mass-loss step, without formation of residue in nitrogen. It was also found that the pyrolysis …
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Cratonic eclogite xenoliths - formation and evolution of the subcontinental lithospheric mantle
… water content of omphacite, based on Fourier transform infrared spectrometry (FTIR) analyses, varies from ~930—1410 to ~1100—1680 ppm by weight H2O, according to different absorption coefficients. Primary garnets are typically anhydrous (<7 ppm H2O), whereas coarse exsolutions contain between …
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Water in the Earth’s Interior: Thermodynamics and kinetics of hydrogen incorporation in olivine and wadsleyite
… in TZM cold-seal vessels. Polarized Fourier-transform infrared spectrometry (FTIR) was employed to quantify the hydroxyl distributions in the samples after the experiments. The new data obtained show a strong anisotropy of diffusion, with the diffusion coefficient D[100]>D[010]> D[001] at …
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Mechanisms Of Nanofilter Fouling And Treatment Alternatives For Surface Water Supplies
… Photoelectron Spectroscopy (XPS) and Fourier Transform Infrared Spectrometry (FTIR), the PA membrane degradation appeared to be chemically-based and initiated with chlorination of amide nitrogen and/or aromatic rings, which ultimately resulted in disruption of membrane chemical structures. The …
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Evaluating the impact of ultraviolet light on chemical and mechanical properties of human scalp hair through controlled and natural experiments
… derivative thermogravimetry (TGA/DTG), Fourier-transform infrared spectrometry (FTIR- ATR) coupled with multivariate analysis, scanning electron microscopy (SEM) and mechanical tensile testing (MTT) techniques to obtain information on the chemical, and mechanical properties of the human hair. …
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An integrated approach of determining shale gas potentiality of carbonaceous shale of the Permian Tuli Basin, Limpopo Province of South Africa
… and Laser Ablation Inductively Coupled Mass Spectrometry (LA-ICP-MS) respectively. In addition to the mineralogical characterisation using X-ray diffraction (XRD), the functional groups of organic compounds in studied samples are identified using Fourier Transform Infrared Spectrometry …