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2011

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Articles 811 - 840 of 1068

Full-Text Articles in Chemistry

Gas-Binding Studies Of The Carbon Monoxide Sensor, Cooa, Joshua A. Wagoner, Lindsey L. Dillingham, Robert W. Clark Jan 2011

Gas-Binding Studies Of The Carbon Monoxide Sensor, Cooa, Joshua A. Wagoner, Lindsey L. Dillingham, Robert W. Clark

Symposium on Research and Creative Expression (SORCE)

CooA is a carbon monoxide-sensing (CO-sensing) heme protein transcription factor that regulates gene activation in several bacteria and is a convenient model for studying analogous proteins in the human body. The goal of this study is to understand the specificity and mechanism of gas binding of CooA. To accomplish this, wild type CooA and selected protein variants were purified and then reacted with different diatomic gas molecules. The resulting species were characterized by UV-Visible and fluorescence spectroscopy.

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Testing The Potential Of Using The Fungus Neurospora Crassa To Convert Human Waste Into Edible Protein., Alex Zapata, Jacob Yablonowski, Michael Watters, Jon Schoer Jan 2011

Testing The Potential Of Using The Fungus Neurospora Crassa To Convert Human Waste Into Edible Protein., Alex Zapata, Jacob Yablonowski, Michael Watters, Jon Schoer

Symposium on Research and Creative Expression (SORCE)

We report on the results of an experiment designed to test the potential of filamentous fungi (mold) to reduce solid waste (feces) while converting it into a consumable, high protein food product. Feces represent an untapped resource. Filamentous fungi are natural decomposers with the ability to use this resource. Many filamentous fungi are safe to eat. Initial studies resulted in rates of conversion which varied considerably with growth conditions. Fungal growth also appears to reduce odor, but we have been unable to confirm this observation via GCMS. The protein content of the resulting fungal biomass was examined using the Kjeldahl …

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Preparation And Crystal Structures Of Chiral And Non-Chiral Mixed Ligand Copper Complexes Containing N-Methyl Imidazole And Various N-Phthaloylalanines, Hiral Patel Jan 2011

Preparation And Crystal Structures Of Chiral And Non-Chiral Mixed Ligand Copper Complexes Containing N-Methyl Imidazole And Various N-Phthaloylalanines, Hiral Patel

Theses, Dissertations and Culminating Projects

A quasiracemate is the cocrystallization of two similarly shaped but chemically distinct molecules of opposite handedness. There has been extensive work done in the field of organic quasiracemates by Dr. Kraig A. Wheeler. Limited work has been done in inorganic quasiracemates. The goal of this study was to prepare various metal based enantiomers, racemates, and quasiracemates using A-phthaloylalanines, and TV-methylimidazole as ligands bound to copper arranged in a centrosymmetric pattern. In this study, we developed a method to prepare A-phthaloylalanines and its copper complexes. Three complexes have yielded crystal structures: a racemate, bis(7V-methylimidazole) bis(D,L-3-chloro-7V-phthaloylalanato)copper(II); a quasiracemate, bis(A-methyhmidazole)(L-3-chloro-iV-phthaloylalanato)(D-3-methyl-7V-phthaloylalanato) copper(II); and an …

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Investigation Of Titanium Nitride As Catalyst Support Material And Development Of Durable Electrocatalysts For Proton Exchange Membrane Fuel Cells, Bharat Avasarala Jan 2011

Investigation Of Titanium Nitride As Catalyst Support Material And Development Of Durable Electrocatalysts For Proton Exchange Membrane Fuel Cells, Bharat Avasarala

Legacy Theses & Dissertations (2009 - 2024)

The impending energy and climatic crisis makes it imperative for human society to seek non-fossil based alternative sources for our energy needs. Although many alternative energy technologies are currently being developed, fuel cell technology provides energy solutions, which satisfy a wide range of applications. But the current fuel cell technology is far from its target of large scale commercialization mainly because of its high cost and poor durability. Considerable work has been done in reducing the cost but its durability still needs significant improvement. Of the various materials in a PEM fuel cell, the degradation of electrocatalyst affects its durability …

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Significance Of Hno3 Acid Photolysis On Surfaces In Tropospheric Chemistry, Honglian Gao Jan 2011

Significance Of Hno3 Acid Photolysis On Surfaces In Tropospheric Chemistry, Honglian Gao

Legacy Theses & Dissertations (2009 - 2024)

The reactive nitrogen trace gases (NOy) including nitrogen oxides (NOx) and their secondary products are known to cause ground-level ozone pollution, photochemical smog, acid deposition, and overall air quality degradation. NOx was believed to be permanently removed from the atmospheric by HNO3 formation and deposition. However, our laboratory experimental results show that HNO3 can be remobilized back to photochemically labile HONO and NOx (re-NOx-ification). We have verified and quantified HONO and NOx production from the photolysis of HNO3 on various surfaces, including Pyrex, leaves of plants, and other environmentally relevant …

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Distributions And Sources Of Hono In The Rural Troposphere, Ning Zhang Jan 2011

Distributions And Sources Of Hono In The Rural Troposphere, Ning Zhang

Legacy Theses & Dissertations (2009 - 2024)

Nitrous acid (HONO) is an important precursor of hydroxyl radical and plays an important role in the terrestrial boundary layer photochemistry. However, there are still many unknowns regarding HONO chemistry such as formation mechanisms and distributions in the troposphere, especially in rural and remote environments. In this research, we presented the first vertical concentration profiles of HONO in the troposphere, measured on a small aircraft platform. The HONO mixing ratios ranged from 4 to 17 pptv in the free troposphere and from 8 to 74 pptv in the rural boundary layer. The HONO distribution patterns were strongly correlated to the …

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Single Cell Analysis For The Characterization Of Cell Populations Using A Live Cell Array, Maureen Ann Walling Jan 2011

Single Cell Analysis For The Characterization Of Cell Populations Using A Live Cell Array, Maureen Ann Walling

Legacy Theses & Dissertations (2009 - 2024)

In the past decade, the shift from whole cell population analyses towards single cell measurement methods and techniques is based on experimental results that reveal significant levels of non-genetic heterogeneity in clonal cell populations. This heterogeneity manifests in multiple aspects of cell activity and is, in part, a result of stochastic noise in processes leading to gene expression, namely transcription and translation. The growing understanding of this occurrence has led to the development of methods to monitor and analyze heterogeneity for a more thorough description of cell populations and overall activity.

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New Photoluminescent Copper(I) Complexes : Impact Of Bridging Carboxylates On Solid-State Structures And Photophysical Properties, Oleksandr Hietsoi Jan 2011

New Photoluminescent Copper(I) Complexes : Impact Of Bridging Carboxylates On Solid-State Structures And Photophysical Properties, Oleksandr Hietsoi

Legacy Theses & Dissertations (2009 - 2024)

Polynuclear copper(I) carboxylates exhibiting rich luminescent properties and a remarkable structural diversity have been the main focus of this investigation. In spite of the well-developed methods of copper(I) carboxylates synthesis, only a handful of complexes have been crystallographically characterized prior to our work. Notably, they all demonstrate different structural arrangements in the solid state. This dissertation describes the work that has been carried out towards the synthesis of new copper(I) carboxylates, the study of their molecular and solid-state structures, and their solid-state photoluminescent (PL) properties. In this work, we have prepared a series of new copper(I) carboxylates of the general …

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Structural Interactions And Dynamics Of Disease Related Proteins By Using Nmr Spectroscopy, Shadakshara Swamy Puttamadappa Jan 2011

Structural Interactions And Dynamics Of Disease Related Proteins By Using Nmr Spectroscopy, Shadakshara Swamy Puttamadappa

Legacy Theses & Dissertations (2009 - 2024)

Nuclear Magnetic Resonance (NMR) is a powerful spectroscopic technique to study the structure, molecular interactions, and dynamics of proteins. Modern NMR instrumentation, advancements in experimental techniques and revolutionary developments in recombinant DNA technology have made NMR a versatile and very convenient tool for biomolecule characterization.

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In-Cell And In Vitro Studies Of Disease Related Protein-Protein Interactions Using Nmr-Spectroscopy, Andres Yudiel Maldonado Jan 2011

In-Cell And In Vitro Studies Of Disease Related Protein-Protein Interactions Using Nmr-Spectroscopy, Andres Yudiel Maldonado

Legacy Theses & Dissertations (2009 - 2024)

The receptor for advanced glycation end products (RAGE) is a multiligand cell surface macromolecule that plays a central role in the etiology of diabetes, inflammation, and neurodegeneration. The cytoplasmic domain of RAGE, ctRAGE, is critical for RAGE-dependent signal transduction. As the most membrane proximal event, mDia1 binds to ctRAGE and is essential for RAGE ligand-stimulated phosphorylation of AKT and cell proliferation/migration. We show that ctRAGE contains an unusual alpha-turn that mediates the mDia1-ctRAGE interaction and is required for RAGE dependent signaling. The results establish a novel mechanism through which an extracellular signal initiated by RAGE ligands regulates RAGE signaling in …

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A Biophysical Study Of Small Molecule-Nucleic Acid Interactions, Rajiv Thapa Jan 2011

A Biophysical Study Of Small Molecule-Nucleic Acid Interactions, Rajiv Thapa

Legacy Theses & Dissertations (2009 - 2024)

Nucleic acids are the biomolecules that encodes all the genetic information necessary for cellular metabolism. Binding of small molecules to DNA or RNA can alter their structures; perturb their functions as well as interactions with proteins and other ligands. This thesis focuses on the biophysical study of the interactions of three planar compounds with TAR 32 DNA (32 ntds DNA in HIV-1 LTR, Figure. The purpose for this study is to understand the binding modes of some of the potential drug target compounds, which will be useful for future rational drug design strategies.

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Developing Dimetal Paddlewheel Complexes For Catalytic Applications, Margaret E. Napier Jan 2011

Developing Dimetal Paddlewheel Complexes For Catalytic Applications, Margaret E. Napier

Legacy Theses & Dissertations (2009 - 2024)

Although there are countless examples of rhodium-catalyzed organic reactions in the chemical literature, the field continues to develop at a steady pace, as focus shifts taking advantage of economy of resources while maintaining efficiency of the catalytic reactions. The work presented is separated into three chapters, with each describing a specific approach to the development of new materials which can provide either a direct economy of resources and reagents or can be used for heterogenization of catalytic systems.

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Single-Source Precursors For Heterometallic Materials, Lan Ngoc Huynh Jan 2011

Single-Source Precursors For Heterometallic Materials, Lan Ngoc Huynh

Legacy Theses & Dissertations (2009 - 2024)

ABSTRACT

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Advanced Statistical Methods For Biochemical And Forensic Applications Of Raman Spectroscopy, Vitali Sikirzhytski Jan 2011

Advanced Statistical Methods For Biochemical And Forensic Applications Of Raman Spectroscopy, Vitali Sikirzhytski

Legacy Theses & Dissertations (2009 - 2024)

This work is dedicated to the development and application of advanced statistical methods for biochemical and forensic applications of Raman spectroscopy. We developed a new concept of multidimensional Raman signatures for forensic identification of body fluid traces, which was successfully applied to the study of dried blood, semen, saliva, sweat and vaginal fluid stains. Several alternative advanced chemometric techniques were also successfully tested for the problems of pure body fluids discrimination and mixture analysis. Studies of body fluid mixtures with low blood and semen concentrations indicated that the detection limit of a minor contributor was as low as a few …

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Synthesis And Characterization Of Diallylic Polysulfanes And Study Toward The Synthesis Of Thiarubrine E, Kai Wang Jan 2011

Synthesis And Characterization Of Diallylic Polysulfanes And Study Toward The Synthesis Of Thiarubrine E, Kai Wang

Legacy Theses & Dissertations (2009 - 2024)

Garlic oil contains diallyl polysulfanes as major components, which have been used as environmentally benign bird repellants and nematicides. While previous studies found that the biological activity of polysulfanes increases with numbers of sulfur atoms, higher diallyl polysulfanes are currently unavailable. A simple approach was developed, using liquid sulfur as a reagent, to the synthesis of diallyl polysulfanes containing chains of more than 20 sulfur atoms. This method was successfully applied to other diallylic disulfides and to garlic oil to give new families of polysulfanes. Some diallyl polysulfanes were isolated in a pure form by preparative high performance liquid chromatography …

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Interactions Of Hydrogen Peroxide And Oxalic Acid On Ice Films, Hui Yan Jan 2011

Interactions Of Hydrogen Peroxide And Oxalic Acid On Ice Films, Hui Yan

Legacy Theses & Dissertations (2009 - 2024)

The heterogeneous halogen chemistry plays a critical role in the ozone depletion events in the polar boundary layers. Pathways involving the conversion from photochemically active halogens to photochemically inactive halogens are necessary to understand the nature of ozone depletion, but the processes are not fully understood. The study of the effects of hydrogen peroxide (H2O2) and oxalic acid (C2H2

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Homologous And Heterologous Crystallin Protein Interactions As The Molecular Basis Of Inherited Cataract, Priya Ranjan Banerjee Jan 2011

Homologous And Heterologous Crystallin Protein Interactions As The Molecular Basis Of Inherited Cataract, Priya Ranjan Banerjee

Legacy Theses & Dissertations (2009 - 2024)

Age-related cataract is the most common cause of blindness worldwide. Nearly fifty percent of Americans above the age of 75 are diagnosed with this disease (http://www.nei.nih.gov/eyedata/pbd_tables.asp), and surgical intervention is the sole method of treatment at present (http://www.nei.nih.gov/healthyvision/objective/cataracts.asp). In the developing world, even this treatment is not readily available. These are compelling reasons to search for better treatments to delay, prevent or arrest cataract formation. Recent evidence suggests that age-related cataracts also have a genetic component. Therefore, determining the mechanisms underlying genetic cataracts with a known association to a protein-mutation is one important strategy towards understanding the molecular basis for …

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Band Structures Of Layered Carbon/Boron Nitride Materials With Commensurate Lattices, Christopher C. Wells Jan 2011

Band Structures Of Layered Carbon/Boron Nitride Materials With Commensurate Lattices, Christopher C. Wells

Legacy Theses & Dissertations (2009 - 2024)

The electronic structures of systems consisting of hexagonal boron nitride layers and graphite sheets have been investigated in detail using density functional theory methods with two exchange correlation functions (local density approximation and generalized gradient approximation). The experimental data of graphene, graphite, monolayer hexagonal BN, and hexagonal BN were reproduced well with computational models. The commensurate models used in the investigation were generated by taking the averages of the lattice constants for graphite and h-BN.

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Biophysical Investigations Of The Molecular Basis Of Cataract Associated With The R76s Mutation In Human Gammad-Crystallin, Vurghun Ahmadov Jan 2011

Biophysical Investigations Of The Molecular Basis Of Cataract Associated With The R76s Mutation In Human Gammad-Crystallin, Vurghun Ahmadov

Legacy Theses & Dissertations (2009 - 2024)

Cataract disease results when the eye lens becomes opaque and scatters a significant part of the incoming light into the eye. The lens contains very high concentrations of the lens proteins, called crystallins, which are present at concentrations comparable to those found in protein crystals (about 400-600 mg/mL). Chemical modifications of the crystallins, such as oxidation and deamidation, or genetic mutations are known to result in increased light-scattering in vitro, and are implicated in cataract formation in vivo. Here we present the in vitro work on a mutant protein of human gammaD crystallin (HGD), namely R76S (i.e. Arg 76 to …

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Design And Synthesis Of Novel Agrofungicides Based On Naturally Occurring Pbdes, Robert Alexander Smith Jan 2011

Design And Synthesis Of Novel Agrofungicides Based On Naturally Occurring Pbdes, Robert Alexander Smith

Electronic Theses and Dissertations

Cyanobacterial symbionts of Indo Pacific marine sponges, e.g. Dysidea sp., produce hydroxylated (OH-) polybrominated diphenyl ethers (PDBEs) which likely function as chemical deterrents owing to their antifungal and antibacterial properties. Limiting the therapeutic potential and agricultural use of these antimicrobial natural products are the negative connotations associated with non hydroxylated anthropogenic PBDEs. Anthropogenic PBDEs are pervasive global pollutants used as flame retardant additives in many household goods, e.g. furniture, textiles, and electronics. These molecules have a propensity to bioaccumulate in living organisms, they easily traverse the trophic food chains, they are readily passed from mother to offspring, and many of …

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Simultaneous Determination Of Trace Sn(Ii) And Sn(Iv) Using Differential Pulse Polarography And Application, Güler Somer, Ülkü Ünal Jan 2011

Simultaneous Determination Of Trace Sn(Ii) And Sn(Iv) Using Differential Pulse Polarography And Application, Güler Somer, Ülkü Ünal

Turkish Journal of Chemistry

A new method was established for the simultaneous determination of Sn(II) and Sn(IV) using differential pulse polarography (DPP). Among several electrolytes, 0.1 M NaOH in the presence of 0.1 M KNO_3 was found to be the most suitable one. In this medium, Sn(II) had 2 peaks, at -0.74 and -1.17 V, which were sharp and very sensitive. Sn(IV), on the other hand, had a very small peak at -0.92 V when its concentration was higher than 4.0 \times 10^{-4} M. Thus, it was decided to determine Sn(IV) after reduction into Sn(II). In the presence of both Sn(II) and Sn(IV), Sn(II) …

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Voltammetric Behavior Of Indole-3-Acetic Acid And Kinetin At Pencil-Lead Graphite Electrode And Their Simultaneous Determination In The Presence Of Anionic Surfactant, Yavuz Yardim, Zühre Şentürk Jan 2011

Voltammetric Behavior Of Indole-3-Acetic Acid And Kinetin At Pencil-Lead Graphite Electrode And Their Simultaneous Determination In The Presence Of Anionic Surfactant, Yavuz Yardim, Zühre Şentürk

Turkish Journal of Chemistry

A method was developed for the simultaneous determination of indole-3-acetic acid (IAA) and kinetin, based on the oxidation of both phytohormones at a pencil-lead graphite electrode. The electrochemical behaviors were examined by cyclic, linear sweep, and square-wave voltammetry in the pH range of 2-12. In Britton-Robinson buffer solution (pH 6), the oxidation peaks of IAA and kinetin are well separated by square-wave voltammetry. By adding an anionic surfactant (sodium dodecylsulfate) in a concentration of 50 \mu M, the sensitivity of kinetin was increased significantly without reducing the resolution. The detection limits were 0.14 and 0.11 \mu M (24.53 and 23.67 …

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Stable Ester And Amide Conjugates Of Some Nsaids As Analgesic And Antiinflammatory Compounds With Improved Biological Activity, Meci̇t Orhan Uludağ, Burcu Çalişkan Ergün, Duygu Asli Alkan, Ni̇lüfer Ercan, Güler Yağmur Özkan, Erden Banoğlu Jan 2011

Stable Ester And Amide Conjugates Of Some Nsaids As Analgesic And Antiinflammatory Compounds With Improved Biological Activity, Meci̇t Orhan Uludağ, Burcu Çalişkan Ergün, Duygu Asli Alkan, Ni̇lüfer Ercan, Güler Yağmur Özkan, Erden Banoğlu

Turkish Journal of Chemistry

A set of ester and amide derivatives of some acidic NSAIDs, including ibuprofen, ketoprofen, and mefenamic acid (1-3), were synthesized and evaluated for their in vivo analgesic and antiinflammatory activity using the p-benzoquinone-induced writhing test and the carrageenan-induced paw edema model, respectively. Among the synthesized compounds, ester derivatives of ketoprofen showed especially potent analgesic and antiinflammatory activity as compared to the parent drug. In vitro chemical stability studies revealed that ester and amide derivatives were chemically stable in simulated gastric (pH 1.2) and intestinal fluids (pH 6.8). In 80\% human plasma, the ester derivatives were found to be relatively stable …

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New Gc Separation Approaches And Analysis Of Antioxidants From Rosemary (Rosmarinus Officinalis L.) And Their Stabilities By Hplc, Ying Zhang Jan 2011

New Gc Separation Approaches And Analysis Of Antioxidants From Rosemary (Rosmarinus Officinalis L.) And Their Stabilities By Hplc, Ying Zhang

Chemistry & Biochemistry Dissertations - Archive

Enantiomeric separations are of great interest in the pharmaceutical, biotechnology and agrochemical industries due to the different therapeutic effects of enantiomers. Because of the high efficiency, sensitivity and simplicity, chiral gas chromatography has been widely applied to separate enantiomers that are volatile and thermally stable. In this dissertation, a group of novel chiral selectors based on cyclofructans for gas chromatography is developed and their enantioselective properties are evaluated.Room temperature ionic liquids (ILs) have been used as gas chromatographic stationary phase due to their unique physical properties in achiral separations. A series of trigonal tricationic ILs are synthesized, characterized and used …

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Capillary Scale Reagent Introduction And Optical Detectors For Capillary Scale Analysis, Santosh K. Mishra Jan 2011

Capillary Scale Reagent Introduction And Optical Detectors For Capillary Scale Analysis, Santosh K. Mishra

Chemistry & Biochemistry Dissertations - Archive

Atmospheric aerosols are of great interest as they have the potential to perturb the earth's radiative energy balance, influence the climate, reduce visibility, and adversely affect human health. The composition of atmospheric particulate matter, especially the concentrations of metals and their ratios, provide insights into sources of the aerosol. Capillary scale ion chromatography systems have several advantages over conventional chromatographic analysis systems like low reagent consumption, small sample requirement, higher efficiencies and better absolute mass detection limits. Hence, to achieve source identification and source apportionment, optical detector based capillary ion chromatography systems are proposed to perform qualitative and quantitative analysis …

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Total Synthesis Of Marine Derived Natural Products: Kealiiquinone And Ageliferin, Heather Marie Lima Jan 2011

Total Synthesis Of Marine Derived Natural Products: Kealiiquinone And Ageliferin, Heather Marie Lima

Chemistry & Biochemistry Dissertations - Archive

An intramolecular Diels-Alder reaction of vinylimidazoles has been developed and applied towards the total synthesis of benzimidazole and tetrahydrobenzimidazole natural products, namely kealiiquinone and ageliferin. A common feature of many imidazole-containing natural products including those of interest in this dissertation is the presence of a 2-amino or 2-imidazolone substituent. A novel method for achieving C2 substitutions has been developed employing chloro-containing reagents. N-Chlorosuccinimide in conjunction with a base has been used to give 2-imidazolones directly from imidazolium salts. This method was then optimized through the use of sodium hypochlorite. This chemistry provides the desired 2-imidazolones in yields ranging from 46-88% …

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Mutational Analysis Of Hiv-1 Nucleocapsid Protein And Methods Development For Aptamer Discovery, Wei Ouyang Jan 2011

Mutational Analysis Of Hiv-1 Nucleocapsid Protein And Methods Development For Aptamer Discovery, Wei Ouyang

Chemistry - Dissertations

This dissertation focuses on structural and functional studies related to the interaction between proteins and nucleic acids and their applications. The work reported here includes two projects. The first part of the thesis is on the mutational and combinatorial analysis of HIV-1 nucleocapsid protein (NCp7). Sixteen mutants of NCp7 were constructed and over-expressed in E. coli . The dissociation constants (K d ) between the mutant proteins and the major packaging signal in HIV-1, SL3 RNA, were measured using tryptophan fluorescence titration assay and/or isothermal titration calorimetry (ITC) assay. Most mutants show tolerance of the mutation but some mutants, including …

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Accumulation, Speciation, And Distribution Of Metal(Loids) In Plants: Applications Of Synchrotron Techniques In Environmental Sciences, Hiram Castillo-Michel Jan 2011

Accumulation, Speciation, And Distribution Of Metal(Loids) In Plants: Applications Of Synchrotron Techniques In Environmental Sciences, Hiram Castillo-Michel

Open Access Theses & Dissertations

In the last two decades, synchrotron based techniques have gained popularity and been increasingly used in environmental sciences. The present dissertation has relied significantly in the use of synchrotron based techniques to study the speciation, coordination, and distribution of toxic metal(loids) in plants. This study included three plant species: Parkinsonia florida, Prosopis juliflora, and Zea mays. P. florida is a plant species native to the semi-desert regions of North America. The cultivation characteristics of this shrub/tree suggest that it could be used for phytoremediation purposes in semiarid regions. P. florida plants were tested for their capacity to remove arsenic (As) …

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Rational Design Of Etchants For Electroless Porous Silicon Formation, Kurt Kolasinski, J W. Gogola Jan 2011

Rational Design Of Etchants For Electroless Porous Silicon Formation, Kurt Kolasinski, J W. Gogola

Chemistry Faculty Publications

From fundamental considerations of the surface chemistry of Si etching in fluoride solutions as well as pore formation and propagation, we develop a mechanistic understanding of what must be known for rational development of etchants: (1) an acidic fluoride solution because the presence of OH- promotes step flow etching, (2) sufficiently high fluoride concentration compared to the oxidant concentration, (3) the oxidant must be able to inject holes into the Si valance band at a sufficient rate, hence E degrees > similar to 0.7 V is required, (4) oxide formation needs to be slow or nonexistent so as to avoid the …

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The Application Of Chemometrics To The Detection And Classification Of Ignitable Liquids In Fire Debris Using The Total Ion Spectrum, Jennifer N. Lewis Jan 2011

The Application Of Chemometrics To The Detection And Classification Of Ignitable Liquids In Fire Debris Using The Total Ion Spectrum, Jennifer N. Lewis

Electronic Theses and Dissertations

Current methods in ignitable liquid identification and classification from fire debris rely on pattern recognition of ignitable liquids in total ion chromatograms, extracted ion profiles, and target compound comparisons, as described in American Standards for Testing and Materials E1618-10. The total ion spectra method takes advantage of the reproducibility among sample spectra from the same American Society for Testing and Materials class. It is a method that is independent of the chromatographic conditions that affect retention times of target compounds, thus aiding in the use of computer-based library searching techniques. The total ion spectrum was obtained by summing the ion …

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