Zhai, lailiang, gas chromatography: mass spectrometry of chemical agents and related interferents (2006) all theses and dissertations 393 http:// scholarsarchivebyuedu/etd/393 developing a field-portable gas chromatography-mass spectrometry (gc-ms) system with solid phase microextraction. Thesis english abstract : gas chromatography coupled to mass spectrometry (gc-ms) and comprehensive two-dimensional gas chromatography (gc×gc) methods were developed for the analysis of tyre derived oils (tdos) using gc-ms with either solvent back extraction or liquid dilution for sample preparation. Spme-gc-ms residual solvents determination and identification of unknown components in pharmaceutical drug products 34 31 literature review 34 311 general remarks 34 312 history and scope 35 313 headspace-spme in pharmaceutical analysis 37 3131 headspace-spme for pharmaceutical products. Gas chromatography/mass spectrometry (gc/ms) is an analytical technique that sees frequent use in labs across the world it is also one of the most common instruments found in forensic science laboratories this technique can efficiently and accurately separate and identify a broad range of compounds. Development of gc-ms methods for the analysis of tyre pyrolysis oils by sithandile ngxangxa thesis presented in partial fulfilment of the requirements for the degree of master of science (msc) in chemistry at stellenbosch university supervisor: prof andré de villiers co-supervisor: dr andreas tredoux march 2016. Iii the use of molecular chemistry (pyrolysis-gc/ms) in the environmental interpretation of peat judith schellekens thesis submitted in fulfilment of the requirements for the degree of doctor at wageningen university by the authority of the rector magnificus prof dr mj kropff, in the presence of the. This doctoral dissertation is brought to you for free and open access by the chemistry at uknowledge verify that this is the final, approved version of the student's thesis including all changes required by the quantitative thioacidolysis gc/ms method was applied to a pretreatment method known. 432 lc-ms/ms 51 433 validation results 52 434 application to real cases 54 5 a fast screening maldi method for the detection of cocaine and its metabolites in hair 57 51 cocaine in hair 57 52 maldi-ms 60 53 materials and methods 63 531 chemicals and reagents 63 532 sample preparation for gc-ms.
Methods and standards for the analysis and imaging of latent fingerprints and trace contraband using ambient ionization mass spectrometry and secondary ion mass spectrometry by edward ryan sisco dissertation submitted to the faculty of the graduate school of. Qualitative thm-gc-ms analysis of proteins and amino acids in rock painting binders by melissa doolin a senior thesis submitted to the eastern michigan university honors program in partial fulfillment of the requirements for graduation with honors in professional biochemistry approved at. Ms/ms and gc-ms/ms was developed optimization and validation of the developed method should provide us with more insight in the possibilities of hair analysis for detection of alcohol (ab-)use chapter 1 of this thesis is an introduction into hair and hair analysis, ethanol metabolites and the techniques available for hair. Therefore usually necessary prior to gas chromatography mass spectrometry ( gcms) analysis the objective of this thesis was to develop a robust analytical method for determination of these bas in addition to 4-hydroxybenzoic acid which is a suggested metabolite of the ac pelargonidine liquid-liquid extraction (lle) was.
False discovery rate feat feature fwhm full width at half maximum gc gas chromatography gc x gc-ms two dimensional gas chromatography-mass spectrometry gc-ms gas chromatography-mass spectrometry gist gas-ion separation tube glog generalized logarithm hdms high definition mass spectrometry. Last day to deposit a dissertation or thesis for a may 2018 degree all gc events calendar last day to deposit a dissertation or thesis for a may 2018 degree apr 30, 2018. The recent emergence and widespread abuse of new classes of compounds on the designer drug market as “legal” alternatives to scheduled drugs such as ecstasy has prompted interest in the development of analytical methods for their detection and characterization synthetic cathinones, which are structurally similar to.
Support in developing methods for analysis i also wish to thank ms roxana sierra hernandez and ms lisa van loon from the allen research group for continual research support and assistance in problem solving, without which this thesis would not be possible this research was supported by a career grant from the. The work described in this thesis was in the field of forensic toxicology, which is the study and practice of toxicology for legal purposes three different application areas were considered: (a) the analysis of drugs in blood by gas chromatography -mass spectrometry (gc-ms) following isolation from the.
Some pre-2014 works have been added to this collection at the author's request if you graduated before 2014 and would like to add your own gc dissertation, or for information about changing your embargo settings, please email [email protected] cunyedu dissertations, theses, and capstone projects are listed by year below. The quantification of fatty acids in microalgae using gc-fid and gc-ms a thesis presented to the faculty of california state polytechnic university, pomon in partial fulfillment of the requirements for the degree master of science in chemistry by amera kchech 2017 a. 29 51proximate analysis of the two raw materials: 29 52thermo gravimetric analysis 30 53tga &dta analysis of the samples 31 54experimental results 36 55 characterization of liquid product: 39 551 ftir of oil samples 39 552 gc-ms of oil samples 43 553 nmr analysis 49 554 physical properties.
Rp-hplc-dad analysis using these data a 2d contour plot was developed and used for the detailed analysis of alkyl pahs isomers analysis results showed good agreement with a gas-chromatography-mass-spectrometric (gc-ms) analysis method, and the new method was able to distinguish some pah types. Head space-trap gc-ms method development and validation for the analysis of volatile organic compounds in water samples by muhammad ramzan thesis for the degree of european masters in quality in analytical laboratories faro, portugal september 2015.
Detection of the pharmaceuticals carbamazepine and diphenhydramine in tissue extracts using gas chromatography -mass spectrometry (gc-ms) by emily hoehn an undergraduate thesis presented to the faculty of the environmental studies program at the university of. Determination of polycyclic aromatic hydrocarbons in cereal-based baby food by gas chromatography-mass spectrometry the occurrence of polycyclic aromatic hydrocarbons (pahs) in cereal-based food is the result of different food preparation methods (e g roasting or drying) and the bioaccumulation in the oily seeds. A determining the perception of food dierent meth- ods, both sensory and analytical, are combined in aroma studies the overall aim of this thesis is to study the feasibility of the headspace solid phase micro-extraction (spme) method to deal with various analytical challenges in the food industry the main chal- lenge was.
Sensitivity, and quantitation of targeted metabolomics to be combined with the broad coverage and potential to find unknown compounds that are the key advantages of untargeted metabolomics in this thesis, a novel gas chromatography triple quadrupole metabolomics (gc-ms) method that exploits fast data acquisition. Gas by gc-ecd and gc-ms similarly, schwander et al analyzed firn air by gc- ms in order to develop a model for air occlusion in ice cores (schwander, barnola et al 1993) it is relevant to note that in both cases, problems relating to contamination of samples with chlorofluorocarbon and hydrochlorofluorocarbon species. Gc-ms method was evaluated at the steroids concentration range of 2 – 50 µg/ml correlation coefficient (r2) of cholesterol and estradiol ≥ 099 both dehydroepiandrosterone and cortisone's parameters ≥ 093 the recoveries for all the steroids determined at low, medium and high concentration levels varied from.