Relevant bibliographies by topics / Gas chromatography methods

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Gas chromatography methods'

Author: Grafiati
Published: 4 June 2021
Last updated: 15 February 2022

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Journal articles on the topic "Gas chromatography methods"

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Venkatarmanan, Raman, and David J. Edwards. "Chemical Methods in Gas Chromatography." Journal of Pharmaceutical Sciences 74, no. 10 (July 1985): 1137–38. http://dx.doi.org/10.1002/jps.2600741034.

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Ray, N. H. "Gas chromatography. II. The separation and analysis of gas mixtures by chromatographic methods." Journal of Applied Chemistry 4, no. 2 (May 4, 2007): 82–85. http://dx.doi.org/10.1002/jctb.5010040205.

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Meng, Xin Xin, and Shu Lin Yang. "Comparison of Gas Chromatography and Liquid Chromatogram Detecting Pesticide Residue." Applied Mechanics and Materials 539 (July 2014): 113–16. http://dx.doi.org/10.4028/www.scientific.net/amm.539.113.

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The existing methods of detecting pesticide residue include gas chromatography, high performance liquid chromatography, gas chromatograph-mass, liquid chromatograph-mass, capillary electrophoresis, radioimmunoassay, biosensor and rapid detection on the spot. The paper analyzes the comparison of gas chromatography and liquid chromatogram detecting pesticide residue, for achieving the development tendency and the future goal of analyzing pesticide residue.
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Hamilton-Kemp, T. R., J. H. Loughrin, and R. A. Andersen. "COLLECTION OF PLANT VOLATILES USING HEADSPACE METHODS." HortScience 25, no. 9 (September 1990): 1180c—1180. http://dx.doi.org/10.21273/hortsci.25.9.1180c.

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Two methods for collecting headspace vapors produced by plant samples are presented. The first involves entraining volatiles in a stream of air and trapping the entrained compounds on a porous polymer such as Tenax. The volatiles are recovered from the trap by solvent extraction or heat desorption and analysed by gas chromatography. A second method entails removing headspace vapor above plant material with a gas-tight syringe and injecting the sample directly into the gas chromatograph. An evaluation of the usefulness of these techniques will be presented.
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Wong, Yong Foo, Constanze Hartmann, and Philip J Marriott. "Multidimensional gas chromatography methods for bioanalytical research." Bioanalysis 6, no. 18 (September 2014): 2461–79. http://dx.doi.org/10.4155/bio.14.186.

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van Ruth, Saskia M. "Methods for gas chromatography-olfactometry: a review." Biomolecular Engineering 17, no. 4-5 (May 2001): 121–28. http://dx.doi.org/10.1016/s1389-0344(01)00070-3.

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Villalobos, R. "Methods Development for On-Line Gas Chromatography." Journal of Chromatographic Science 28, no. 7 (July 1, 1990): 341–50. http://dx.doi.org/10.1093/chromsci/28.7.341.

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Schomburg, Gerhard. "Two-dimensional gas chromatography: Principles, instrumentation, methods." Journal of Chromatography A 703, no. 1-2 (June 1995): 309–25. http://dx.doi.org/10.1016/0021-9673(95)00190-x.

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Etxebarria, Nestor, Olatz Zuloaga, Maitane Olivares, Luis J. Bartolomé, and Patricia Navarro. "Retention-time locked methods in gas chromatography." Journal of Chromatography A 1216, no. 10 (March 2009): 1624–29. http://dx.doi.org/10.1016/j.chroma.2008.12.038.

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Mah, Christine, and Kevin B. Thurbide. "Acoustic methods of detection in gas chromatography." Journal of Separation Science 29, no. 12 (August 2006): 1922–30. http://dx.doi.org/10.1002/jssc.200500424.

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Dissertations / Theses on the topic "Gas chromatography methods"

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McGill, Robert Andrew. "Physicochemical measurements by gas chromatography." Thesis, University of Surrey, 1988. http://epubs.surrey.ac.uk/847792/.

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First the method of gas-liquid chromatography (GLC) has been used to obtain partition coefficients, K, at infinite dilution on polymeric and non-polymeric phases. About 30-40 solutes were studied per stationary phase. Secondly the method of gas-solid chromatography has been used to obtain adsorption isotherms for a series of adsorbents by the technique of elution by characteristic point (ECP). A single injection of a gas or vapour suffices to obtain the isotherm, and then the limiting Henry's law constant, Kh, for adsorption at low surface coverage. About 20-30 solutes were studied per adsorbent. Experiments were carried out at several levels of relative humidity (RH) 0%, 31% and 53%. The solute compounds used were chosen so as to have a wide range of properties such as polarity (pi*2), hydrogen-bond acidity (alpha[H]2), and hydrogen-bond basicity (beta[H]2). The results as log partition coefficients or -log Henry's constants were analysed by multiple linear regression analysis using equations such as: -LogK[H] or LogK = SPo + s.pi* 2 + a.alpha[H]2 + b.beta[H]2 + 1. LogL[18] where L[18] is the solute Ostwald absorption coefficient on n-hexadecane. In this way, the selectivity of the liquid polymeric phase or solid adsorbent towards classes of compound was investigated and equations for the prediction of further values of LogK or LogK[H] formulated. In parallel with the measurement of partition coefficients on liquid polymeric phases by GLC in this work, partition coefficients for the polymers have been determined using surface acoustic wave (SAW) devices by coworkers at the Naval Research Laboratory, Washington. The results for a series of 8-9 solutes in six polymeric phases show that partition coefficients and patterns of responses predicted through GLC experiments are the same as those found experimentally using coated SAW devices. Hence GLC can be used to evaluate possible coating materials, and by the technique of multiple linear regression analysis, to predict SAW responses for a multitude of vapours.
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Muralidharan, Abishek. "Evaluation of heavy-duty engine exhaust hydrocarbon and non-methane hydrocarbon analysis methods." Morgantown, W. Va. : [West Virginia University Libraries], 2007. https://eidr.wvu.edu/etd/documentdata.eTD?documentid=5520.

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Thesis (M.S.)--West Virginia University, 2007.
Title from document title page. Document formatted into pages; contains viii, 87 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 72-73).
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Ho, Sai Hang. "Analysis of airborne organic compounds using thermal desorption- gas chromatography-mass spectrometry methods /." View abstract or full-text, 2004. http://library.ust.hk/cgi/db/thesis.pl?CHEM%202004%20HO.

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Kloskowski, Adam. "Improved methods for enrichment of organic ultra trace components for analysis by gas chromatography." Licentiate thesis, KTH, Chemistry, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-1661.

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This thesis describes some new methods for analysis oforganic trace components from air and water by gaschromatography. The work is particularly focused on thedevelopment of new technologies for analyte enrichment, usingsorbent-based concepts. Short lengths of open tubular columnswere examined for their potential use as denuders.Polydimethylsiloxane-based stationary phases as well as anadsorbent-based column were evaluated in an equilibrium mode oftrapping. For the analytes selected, detection levels in theppb range were obtained (Paper I).

A new, fully automated set-up for analysis of organic tracecomponents in aqueous samples has been developed (Paper II).The work combines specific advantages of the solid phase microextraction (SPME) technology and stir bar sorptive extractionconcept. Ultra trace components, down to 0.1 ppt could bedetected. Finally a simple method for preparation a new type ofultra thick film open tubular trap is described (Paper III).The traps are characterized by an irregular coating, and it wasdemonstrated that the performance characteristics of thesetraps were practically as good as of traps with a smooth,regular coating. The technology can be utilized in many areas,e.g. environmental monitoring, process analysis and otherfields dealing with analysis of trace organic volatiles ingaseous samples.

Keywords:Organic trace components, volatiles, denuders,sorbent trapping, thick film trapping, open tubular traps,SPME, automation, water analysis, gas analysis, environmentalanalysis.

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Kouremenos, Konstantinos A., Mikael Johansson, and Philip J. Marriott. "Advances in gas chromatographic methods for the identification of biomarkers in cancer." Umeå universitet, Institutionen för molekylärbiologi (Medicinska fakulteten), 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-61275.

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Screening complex biological specimens such as exhaled air, tissue, blood and urine to identify biomarkers in different forms of cancer has become increasingly popular over the last decade, mainly due to new instruments and improved bioinformatics. However, despite some progress, the identification of biomarkers has shown to be a difficult task with few new biomarkers (excluding recent genetic markers) being considered for introduction to clinical analysis. This review describes recent advances in gas chromatographic methods for the identification of biomarkers in the detection, diagnosis and treatment of cancer. It presents a general overview of cancer metabolism, the current biomarkers used for cancer diagnosis and treatment, a background to metabolic changes in tumors, an overview of current GC methods, and collectively presents the scope and outlook of GC methods in oncology.
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Nezami, Ranjbar Mohammad Rasoul. "Novel Preprocessing and Normalization Methods for Analysis of GC/LC-MS Data." Diss., Virginia Tech, 2015. http://hdl.handle.net/10919/73499.

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We introduce new methods for preprocessing and normalization of data acquired by gas/liquid chromatography coupled with mass spectrometry (GC/LC-MS). Normalization is desired prior to subsequent statistical analysis to adjust variabilities in ion intensities that are not caused by biological differences. There are different sources of experimental bias including variabilities in sample collection, sample storage, poor experimental design, noise, etc. Also, instrument variability in experiments involving a large number of runs leads to a significant drift in intensity measurements. We propose new normalization methods based on bootstrapping, Gaussian process regression, non-negative matrix factorization (NMF), and Bayesian hierarchical models. These methods model the bias by borrowing information across runs and features. Another novel aspect is utilizing scan-level data to improve the accuracy of quantification. We evaluated the performance of our method using simulated and experimental data. In comparison with several existing methods, the proposed methods yielded significant improvement. Gas chromatography coupled with mass spectrometry (GC-MS) is one of the technologies widely used for qualitative and quantitative analysis of small molecules. In particular, GC coupled to single quadrupole MS can be utilized for targeted analysis by selected ion monitoring (SIM). However, to our knowledge, there are no software tools specifically designed for analysis of GS-SIM-MS data. We introduce SIMAT, a new R package for quantitative analysis of the levels of targeted analytes. SIMAT provides guidance in choosing fragments for a list of targets. This is accomplished through an optimization algorithm that has the capability to select the most appropriate fragments from overlapping peaks based on a pre-specified library of background analytes. The tool also allows visualization of the total ion chromatogram (TIC) of runs and extracted ion chromatogram (EIC) of analytes of interest. Moreover, retention index (RI) calibration can be performed and raw GC-SIM-MS data can be imported in netCDF or NIST mass spectral library (MSL) formats. We evaluated the performance of SIMAT using several experimental data sets. Our results demonstrate that SIMAT performs better than AMDIS and MetaboliteDetector in terms of finding the correct targets in the acquired GC-SIM-MS data and estimating their relative levels.
Ph. D.
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Geng, Dawei. "Gas chromatography-atmospheric pressure chemical ionization-tandem mass spectrometry methods for the determination of environmental contaminants." Doctoral thesis, Örebro universitet, Institutionen för naturvetenskap och teknik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-51727.

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The recent developments and improvements of instrumental methods for the analyses of the environmental contaminants, especially the persistent organic pollutants (POPs), have made it possible to detect and quantify these at very low concentrations in environmental and biotic matrices. The main objective of this thesis is to demonstrate the capability of the atmospheric pressure chemical ionization technique (APCI), using gas chromatography coupled to tandem mass spectrometry for the determination of a wide range of environmental contaminants, including the POPs regulated by Stockholm Convention, such as polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs), polychlorinated biphenyls (PCBs), polybrominated diphenyl ethers (PBDEs), but also the derivates of PBDEs and novel brominated flame retardants (NBFRs). The APCI was operated in charge transfer condition, preferably producing molecular ions. Multiple reaction monitoring (MRM) experiments were optimized by adjusting cone voltage, collision energy and dwell time. Optimization of source parameters, such as gas flows and temperatures was also performed. Low concentration standards were analyzed, achieving a visible chromatographic peak for 2 fg 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) demonstrating the excellent sensitivity of the system. Adequate linearity and repeatability were observed for all the studied compounds. The performance of APCI methods was validated against the conventional methods using gas chromatography coupled to high resolution mass spectrometry for chlorinated compounds in a wide range of matrices including environmental, air, human and food matrices. The GC-APCI-MS/MS method was successfully applied to a set of 75 human serum samples to study the circulating levels of POPs in epidemiologic studies. Moreover the method was utilized to establish temporal trends of POPs in osprey eggs samples collected during the past five decades.
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Marsol, i. Vall Alexis. "Gas chromatography-mass spectrometry for the analysis of metabolomic compounds in agrifood products. New methods and applications." Doctoral thesis, Universitat de Lleida, 2017. http://hdl.handle.net/10803/403491.

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Aquesta Tesi Doctoral se centra en el desenvolupament de nous mètodes de cromatografia de gasos acoblada a tècniques d'espectrometria de masses (GC-MS) i a l'aplicació d'alguns mètodes ja existents a l'anàlisi de mostres de fruites i derivats. La tesi es divideix en tres parts segons els enfocaments estudiats. Inicialment, es va desenvolupar un mètode de cromatografia de gasos bidimensional comprensiva (GC×GC-MS) en la qual es van provar diverses configuracions de columnes. A la segona part de la Tesi, es van desenvolupar tres nous mètodes basats en la derivatització al port d'injecció. La primera va consistir en l’anàlisi selectiu de 17 polifenols glicosilats i no glicosilats en mostres de fruita i suc de fruita. El segon mètode es va destinar a l'anàlisi de HMF i patulina, dos compostos utilitzats com a marcadors de qualitat en la indústria dels sucs de fruites. L'últim mètode desenvolupat en aquesta part es va centrar en la fracció lipofílica lliure de sucs de fruita. En aquest cas, una microextracció líquid-líquid dispersiva (DLLME) va precedir a la derivatització en el port. La tercera part es va centrar en l'anàlisi dels compostos volàtils i semi-volàtils de diversos derivats de la fruita, a saber, fibres de fruita derivades de la indústria dels sucs i quatre mostres de sucs de préssec consistents en dues varietats (groc i vermell) i dos procediments d'elaboració per a cada varietat (recentment liquat i comercial).
This Doctoral Thesis focuses on the development of novel gas chromatography coupled to mass spectrometry (GC-MS) techniques and the application of some existing methods to the analysis of fruit and fruit-derived samples. The thesis is divided in three parts attending the approaches studied. Initially, a comprehensive two-dimensional gas chromatography (GC×GC-MS) method was developed by testing several column configurations to analyse apples and peaches. In the second part of the Thesis, three new methods based on injection-port derivatization were developed. The first consisted on a targeted analysis of 17 glycosylated and non-glycosylated polyphenols in fruit and fruit juice samples. The second method was devoted to the analysis of HMF and patulin, two compounds used as markers of quality in the fruit juice industry. The last method developed in this part was focused on the free lipophilic fraction of fruit juices. In this case, a dispersive liquid-liquid microextraction (DLLME) preceded in-port derivatization. The third part was devoted to the analysis of volatile and semi-volatile compounds in several fruit-derived products, namely fruit fibres deriving from the juice industry and four samples of peach juices consisting in two varieties (yellow and red-fleshed) and two distinct processing procedures for each variety (freshly blended and commercial).
Esta Tesis Doctoral se centra en el desarrollo de nuevos métodos de cromatografía de gases acoplada a técnicas de espectrometría de masas (GC-MS) y a la aplicación de algunos métodos existentes al análisis de muestras de frutas y derivados. La tesis se divide en tres partes según los enfoques estudiados. Inicialmente, se desarrolló un método de cromatografía de gases bidimensional comprensiva (GC×GC-MS) en la que se probaron varias configuraciones de columnas. En la segunda parte de la Tesis, se desarrollaron tres nuevos métodos basados en la derivatización en el puerto de inyección. La primera consistió en un análisis selectivo de 17 polifenoles glicosilados y no glicosilados en muestras de fruta y zumo de fruta. El segundo método se dedicó al análisis de HMF y patulina, dos compuestos utilizados como marcadores de calidad en la industria del zumo de frutas. El último método desarrollado en esta parte se centró en la fracción lipofílica libre de zumos de fruta. En este caso, una microextracción líquido-líquido dispersiva (DLLME) precedió a la derivatización en el puerto. La tercera parte se dedicó al análisis de los compuestos volátiles y semi-volátiles de varios derivados de la fruta, a saber, fibras de fruta derivadas de la industria de los zumos y cuatro muestras de zumos de melocotón consistentes en dos variedades (amarillo y rojo) y dos procedimientos de elaboración para cada variedad (recién licuado y comercial).
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Ghasemi, Damavandi Hamidreza. "Data analytics, interpretation and machine learning for environmental forensics using peak mapping methods." Diss., University of Iowa, 2016. https://ir.uiowa.edu/etd/2083.

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In this work our driving motivation is to develop mathematically robust and computationally efficient algorithms that will help chemists towards their goal of pattern matching. Environmental chemistry today broadly faces difficult computational and interpretational challenges for vast and ever-increasing data repositories. A driving factor behind these challenges are little known intricate relationships between constituent analytes that constitute complex mixtures spanning a range of target and non-target compounds. While the end of goal of different environment applications are diverse, computationally speaking, many data interpretation bottlenecks arise from lack of efficient algorithms and robust mathematical frameworks to identify, cluster and interpret compound peaks. There is a compelling need for compound-cognizant quantitative interpretation that accounts for the full informational range of gas chromatographic (and mass spectrometric) datasets. Traditional target-oriented analysis focus only on the dominant compounds of the chemical mixture, and thus are agnostic of the contribution of unknown non-target analytes. On the other extreme, statistical methods prevalent in chemometric interpretation ignore compound identity altogether and consider only the multivariate data statistics, and thus are agnostic of intrinsic relationships between the well-known target and unknown target analytes. Thus, both schools of thought (target-based or statistical) in current-day chemical data analysis and interpretation fall short of quantifying the complex interaction between major and minor compound peaks in molecular mixtures commonly encountered in environmental toxin studies. Such interesting insights would not be revealed via these standard techniques unless a deeper analysis of these patterns be taken into account in a quantitative mathematical framework that is at once compound-cognizant and comprehensive in its coverage of all peaks, major and minor. This thesis aims to meet this grand challenge using a combination of signal processing, pattern recognition and data engineering techniques. We focus on petroleum biomarker analysis and polychlorinated biphenyl (PCB) congener studies in human breastmilk as our target applications. We propose a novel approach to chemical data analytics and interpretation that bridges the gap between target-cognizant traditional analysis from environmental chemistry with compound-agnostic computational methods in chemometric data engineering. Specically, we propose computational methods for target-cognizant data analytics that also account for local unknown analytes allied to the established target peaks. The key intuition behind our methods are based on the underlying topography of the gas chromatigraphic landscape, and we extend recent peak mapping methods as well as propose novel peak clustering and peak neighborhood allocation methods to achieve our data analytic aims. Data-driven results based on a multitude of environmental applications are presented.
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Armstrong, Helen Elisabeth Louise. "Speciation of mercury by chromatography coupled with atomic spectrometry." Thesis, University of Plymouth, 2000. http://hdl.handle.net/10026.1/1868.

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A commercial GC-AFS instrument has been developed and optimised for the speciation of organomercury. This instrument couples a GC oven to a modified atomic fluorescence detector via a ceramic pyrolyser. Organomercury compounds in dichloromethane solvent were directly injected through a Programmable Temperature Vaporiser Injector onto a DBl Megabore column. Once separated, the compounds eluted from the column and were atomised in the pyrolyser then detected by AFS. The direct injection technique, ceramic pyrolysis design and argon purged detector have improved previous instrument designs by enhancing and maintaining sensitivity. The instrumental limit of detection was determined to be 0.25 pg Hg absolute. Methods were developed for the extraction of methylmercury from a variety of marine samples. The techniques were validated using mussel homogenate and dogfish liver (IAEA 142, SRM 8044 and DOLT-2) certified reference materials. An interlaboratory comparision exercise was participated in and a method was developed for the detemination of methylmercury in Fucus sea plant (IAEA 140). A concentration of 0.63 ± 0.006 ng g-1 was reported. The material is now certified at 0.626 +0.139 ng g-1. Of all the participating laboratories, this was the closest result to the certified value. The instrument and methods were also applied to soil and sediment samples. Once again validation was performed with a CRM sediment, IAEA 356. Although this material has been reported to give positive artifact formation when using a steam distillation sample preparation procedure, good agreement and no artifects were observed upon analysis. A further contaminated land, an uncontaminated soil and sediment sample were also studied. For all the samples studied by GC-AFS total mercury measurements were also made following an appropriate digestion procedure and CV-AFS. A gas chromatograph was also coupled with ICP-MS and HPLC was coupled to CV-AFS as comparative techniques. Both approaches were optimised and validated with CRM's. The GC-ICP-MS had the advantage of providing additional element information and confirmed the presence of methylmercury bromide in the final mussel homogenate extract. The HPLC approach found to be much less sensitive than the GC techniques and also suffered from vapour generation interferences. The PTV injector was considered for large volume injection and thermal desorption techniques. Injector breakdown problems were overcome by optimising the conditions and solid phase adsorbent for cold splitless injection. A recovery of 70% was achieved for a 50 ul large volume injection of methylmercury chloride in DCM. This technique indicated the possibility that LVI may in the future offer increased method sensitivity.
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Books on the topic "Gas chromatography methods"

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Chromatography: Concepts and contrasts. New York: Wiley, 1988.

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M, Miller James. Chromatography: Concepts and contrasts. 2nd ed. Hoboken, N.J: Wiley, 2005.

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Novák, Josef P. Quantitative analysis by gas chromatography. 2nd ed. New York: M. Dekker, 1988.

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Mossoba, Magdi M. Official methods for the determination of trans fats by gas chromatography and infrared methods. Urbana, IL: AOCS Press, 2008.

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Alford-Stevens, Ann. Method 680: Determination of pesticides and PCBs in water and soil/sediment by gas chromatography/mas spectrometry. Cincinnati, Ohio: Environmental Monitoring and Support Laboratory, 1985.

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Won, H. T. Multiresidue methods for the determination of chlorinated pesticides and polychlorinated biphenyls (PCBs) in wildlife tissues by gas chromatography/mass spectrometry. Hull, Québec: Canadian Wildlife Service, 2001.

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Jha, Virendra K. Methods of analysis by the U.S. Geological Survey National Water Quality Laboratory: Determination of organophosphate pesticides in bottom sediment by gas chromatography with flame photometric detection. Denver, Colo: U.S. Dept. of the Interior, U.S. Geological Survey, 2003.

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Jha, Virendra K. Methods of analysis by the U.S. Geological Survey National Water Quality Laboratory: Determination of organophosphate pesticides in bottom sediment by gas chromatography with flame photometric detection. Denver, Colo: U.S. Dept. of the Interior, U.S. Geological Survey, 2003.

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Jha, Virendra K. Methods of analysis by the U.S. Geological Survey National Water Quality Laboratory: Determination of organophosphate pesticides in whole water by continuous liquid-liquid extraction and capillary-column gas chromatography with flame photometric detection. Denver, Colo: U.S. Dept. of the Interior, U.S. Geological Survey, 2003.

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Jha, Virendra K. Methods of analysis by the U.S. Geological Survey National Water Quality Laboratory: Determination of organophosphate pesticides in whole water by continuous liquid-liquid extraction and capillary-column gas chromatography with flame photometric detection. Denver, Colo: U.S. Dept. of the Interior, U.S. Geological Survey, 2003.

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Book chapters on the topic "Gas chromatography methods"

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Braithwaite, A., and F. J. Smith. "Gas chromatography." In Chromatographic Methods, 165–257. Dordrecht: Springer Netherlands, 1999. http://dx.doi.org/10.1007/978-94-011-0599-6_5.

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Yang, Rui. "Gas Chromatography and Inverse Gas Chromatography." In Analytical Methods for Polymer Characterization, 1–24. Boca Raton : CRC Press, 2018.: CRC Press, 2018. http://dx.doi.org/10.1201/9781351213158-1.

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Braithwaite, A., and F. J. Smith. "Gas Chromatography (GC)." In Chromatographic Methods, 137–211. Dordrecht: Springer Netherlands, 1985. http://dx.doi.org/10.1007/978-94-009-4093-2_5.

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Brands, Mathias, Philipp Gutbrod, and Peter Dörmann. "Lipid Analysis by Gas Chromatography and Gas Chromatography–Mass." In Methods in Molecular Biology, 43–57. New York, NY: Springer US, 2021. http://dx.doi.org/10.1007/978-1-0716-1362-7_4.

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Sidelnikov, V. N., Y. V. Patrushev, and V. N. Parmon. "Ultrafast Gas Chromatography." In Principles and Methods for Accelerated Catalyst Design and Testing, 257–75. Dordrecht: Springer Netherlands, 2002. http://dx.doi.org/10.1007/978-94-010-0554-8_13.

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Witte, L. "GC-MS Methods for Terpenoids." In Gas Chromatography/Mass Spectrometry, 134–45. Berlin, Heidelberg: Springer Berlin Heidelberg, 1986. http://dx.doi.org/10.1007/978-3-642-82612-2_7.

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Kodama, H. "GC-MS Methods for Tobacco Constituents." In Gas Chromatography/Mass Spectrometry, 277–98. Berlin, Heidelberg: Springer Berlin Heidelberg, 1986. http://dx.doi.org/10.1007/978-3-642-82612-2_12.

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Palni, L. M. S., S. A. B. Tay, and J. K. MacLeod. "GC-MS Methods for Cytokinins and Metabolites." In Gas Chromatography/Mass Spectrometry, 214–53. Berlin, Heidelberg: Springer Berlin Heidelberg, 1986. http://dx.doi.org/10.1007/978-3-642-82612-2_10.

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Meier, D., and O. Faix. "Pyrolysis-Gas Chromatography-Mass Spectrometry." In Methods in Lignin Chemistry, 177–99. Berlin, Heidelberg: Springer Berlin Heidelberg, 1992. http://dx.doi.org/10.1007/978-3-642-74065-7_13.

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Nyberg, H. "GC-MS Methods for Lower Plant Glycolipid Fatty Acids." In Gas Chromatography/Mass Spectrometry, 67–99. Berlin, Heidelberg: Springer Berlin Heidelberg, 1986. http://dx.doi.org/10.1007/978-3-642-82612-2_4.

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Conference papers on the topic "Gas chromatography methods"

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Koike, Nobuo, Masanori Ito, and Toshiaki Inoue. "A Comparison of Gas Chromatography-Based Methods of Analyzing Hydrocarbon Species." In International Congress & Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1994. http://dx.doi.org/10.4271/940740.

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Tso, J., and S. Que Hee. "156. Determination of Formaldehyde in Water by Anion Exchange Solid Sorbent Methods with Gas Chromatography/Electron Capture Detection and Gas Chromatography/Mass Spectrometry." In AIHce 2001. AIHA, 2001. http://dx.doi.org/10.3320/1.2765671.

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Lin Xia Zhang, Tao Liu, Li Quan Sun, and Ai Qin Luo. "Study on poly methods of imidazolium ionic liquid stationary phase in capillary gas chromatography." In 2011 International Conference on Remote Sensing, Environment and Transportation Engineering (RSETE). IEEE, 2011. http://dx.doi.org/10.1109/rsete.2011.5964164.

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Roudil, D., C. Jegou, R. Pik, M. F. Barthe, M. Cuney, F. Vella, Y. Pipon, B. Folch, and V. Broudic. "Thermal desorption gas chromatography and positron annihilation spectroscopy contribution to alpha decay studies in actinide-doped matrices." In 2009 1st International Conference on Advancements in Nuclear Instrumentation, Measurement Methods and their Applications (ANIMMA). IEEE, 2009. http://dx.doi.org/10.1109/animma.2009.5503695.

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Blebea, Nicoleta Mirela, and Simona Negreș. "METHODS FOR QUANTIFICATION OF THE MAIN CANNABINOIDS IN CBD OIL." In GEOLINKS Conference Proceedings. Saima Consult Ltd, 2021. http://dx.doi.org/10.32008/geolinks2021/b1/v3/13.

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Cannabidiol (CBD) is an alkaloid present in Cannabis sativa, together with tetrahydrocannabinol (THC) and more than 120 other substances belonging to a group of compounds named cannabinoids. Due to the continuous increased usage of CBD oils, it became necessary to be developed efficient methods for the identification of its compounds and especially for the characterization of the cannabinoids from the commercial specimens. Cannabinoids may be detected by many and different analytical methods, including immunoassays (EMIT®, Elisa, fluorescent polarization, radioimmunotest), techniques of flat chromatography: classic thin layer chromatography (TLC), optimum performance laminar chromatography (OPLC) and multiple development automatization (AMD), gas chromatography-mass spectrometry (GC-MS), high-performance liquid chromatography-mass spectrometry (HPLC-MS). Ultraviolet signal (UV) is used for the quantification of major cannabinoids and the mass spectrometer is used for the quantification of minor cannabinoids. The purpose of this study was to compare the performances of TLC, Ultra High-Performance Liquid chromatography with Photodiode Array Detection (UHPLC with PDA) and LC-MS/ MS technique for the qualitative and quantitative determination of cannabinoids in 3 commercial oils with CBD. Having in view that CBD may be found in many forms of oils, on the legal market of the internet, we believe that the development of a method for the qualitative and quantitative determination may be an interesting subject for the pharmaceutical professional persons.
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H. Kim-Yang, S. Davies, R. D. von Bernuth, and E. A. Kline. "A Comparison of sampling methods for the characterization odorous compounds in livestock facilities using gas chromatography - mass spectrometry." In 2001 Sacramento, CA July 29-August 1,2001. St. Joseph, MI: American Society of Agricultural and Biological Engineers, 2001. http://dx.doi.org/10.13031/2013.4135.

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Farrugia, Jennifer E., and Keith L. Olson. "Speciation of Hydrocarbons in Exhaust from Low-Emission, Gasoline-Fueled Vehicles by High-Speed and Standard Gas Chromatography Methods." In SAE World Congress & Exhibition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2007. http://dx.doi.org/10.4271/2007-01-0305.

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Chen, Hsieh, Sehoon Chang, Gawain Thomas, Wei Wang, Afnan Mashat, and Hussain Shateeb. "Comparison of Water and Gas Tracers Field Breakthrough." In SPE Annual Technical Conference and Exhibition. SPE, 2021. http://dx.doi.org/10.2118/205863-ms.

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Abstract We are developing new classes of barcoded advanced tracers, which, compared to present commercial offerings, can be optically detected in an automated fashion. The eventual goal for the advanced tracers is to deploy cost-effective, ubiquitous, long-term, and full-field tracer tests in supporting large-scale waterflooding optimization for improved oil recovery. In this paper, we compare model predictions to breakthrough data from two field tests of advanced tracers in a pilot during water alternating gas (WAG) cycles, where gas tracer tests have recently been performed as well. Two advanced tracer injections were performed at the test site. For the first injection, only a dipicolinic acid based advanced tracer (DPA) was injected. For the second injection, DPA and a phenanthroline- based advanced tracer, 4,7-bis(sulfonatophenyl)-1,10-phenanthroline-2,9-dicarboxylic acid (BSPPDA), was injected in conjunction with a commercially available fluorobenzoic acid-based tracer (FBA) to benchmark their performance. Produced water samples were collected weekly for tracer analysis. Both newly developed 2D-high performance liquid chromatography/time-resolved fluorescence optical detection method (2D-HPLC/TRF) and liquid chromatography-mass spectrometry (LC-MS) were used to construct the breakthrough curves for the advanced tracers. In parallel, gas chromatography-mass spectrometry (GC-MS) was used to detect FBA tracer. Gas tracer tests have been performed on the same field. Since DPA, BSPPDA and FBA tracers were water tracers as designed, they were expected to appear in between gas tracer breakthroughs, and we observed exactly that for BSPPDA and FBA. Unexpectedly, the DPA predominantly appeared along with gas tracer breakthroughs, suggesting its favorable compatibility with the gas phase. We suspect the presence of some gas components rendered the medium more acidic, which likely protonates DPA molecules, thereby alters its hydrophilicity. A wealth of information could be gathered from the field tests. First, all tracers survived not only the harsh reservoir conditions but also the irregular WAG injections. Their successful detection from the producers suggested robustness of these materials for reservoir applications. Second, the breakthrough curves of the BSPPDA tracers using optical detection method were very similar to those of FBA tracers detected by GC-MS, substantiating the competency of our in-house materials and detection methods to the present commercial offerings. Finally, even though DPA has passed prior lab tests as a good water tracer, its high solubility to gas phase warrants further investigation. This paper summarizes key results from two field trials of the novel barcoded advanced tracers, of which both the tracer materials and detection methods are new to the industry. Importantly, the two co- injected advanced tracers showed opposite correlations to the gas tracers, highlighting the complex physicochemical interactions in reservoir conditions. Nevertheless, the information collected from the field trials is invaluable in enabling further design and utilization of the advanced tracers in fulfilling their wonderful promises.
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Li, Jianrong, Stefan Persijn, Iris de Krom, Heleen Meuzelaar, and Adriaan M. H. van der Veen. "Metrology for biomethane conformity assessment: measure trace gas impurities in biomethane." In 19th International Congress of Metrology (CIM2019), edited by Sandrine Gazal. Les Ulis, France: EDP Sciences, 2019. http://dx.doi.org/10.1051/metrology/201906002.

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To facilitate the use of biomethane in existing transmission and distribution infrastructures, CEN/TC 408 developed specifications (EN 16723) for injecting biomethane into the natural gas grids and using it as a transport fuel. Currently, the test methods cited in EN 16723 lack metrological aspects and have not been specifically developed for biomethane. To address this need, ISO/TC193/SC1/WG25 “Biomethane” has been created to work on standardized methods. To assess conformity of biomethane with the specification and to provide essential input to WG25, test methods are being developed in this research for a group of impurities such as siloxanes, halogenated volatile organic compounds, hydrogen chloride, hydrogen fluoride. A further objective of this research is to develop fit-for-purpose measurement standards for these parameters, to enable SI-traceable calibration and facilitate accurate measurement results. An overview of the progress made with respect to the development of measurement standards and test methods for trace level concentrations of impurities is presented, with a focus on static measurement standards of siloxanes and halogenated volatile organic compounds, dynamic gas standards of HCl and HF, as well as corresponding test methods based on gas chromatography and spectroscopic techniques. The work presented is pivotal for the development of metrological infrastructure for biomethane conformity assessment.
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Mazurkiewicz, Paul. "Advanced Analytical Chemistry Techniques Enable Rapid, Cheap and Concise Electronic Failure Analysis." In ISTFA 2004. ASM International, 2004. http://dx.doi.org/10.31399/asm.cp.istfa2004p0457.

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Abstract This article introduces several analytical chemistry techniques that are extremely useful in the electronics failure analysis (FA) laboratory, but are not normally found in FA laboratories. It presents the techniques in simple language and makes a case for the inclusion of chemists in the rapidly evolving and ever-shrinking world of microelectronic failure analysis. The article discusses the following techniques in terms of their applications, advantages, and operating principles: gel permeation chromatography, gas chromatography-mass spectrometry, Fourier transform-infrared spectroscopy, and electron spectroscopy for chemical analysis (ESCA). As we move into the world of nanotechnology, these techniques will become key in analyzing failures that cannot be visualized using traditional FA methods.
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Reports on the topic "Gas chromatography methods"

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Fairbaugh, Craig. Methods of Collecting and Separating Atmospheric Organic Aerosols for Analysis Using Two-Dimensional Gas and Liquid Chromatography with Mass Spectrometry. Portland State University Library, January 2015. http://dx.doi.org/10.15760/honors.155.

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McGarvey, David J., and William R. Creasy. Headspace Gas Chromatography Method for Studies of Reaction and Permeation of Volatile Agents with Solid Materials. Fort Belvoir, VA: Defense Technical Information Center, January 2015. http://dx.doi.org/10.21236/ada614546.

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SESSIONS, HENRY. Analytical Method for Measuring Total Protium and Total Deuterium in a Gas Mixture Containing H2, D2, and HD Via Gas Chromatography. Office of Scientific and Technical Information (OSTI), March 2004. http://dx.doi.org/10.2172/822364.

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Logan, Thomas P., Edward D. Allen, Mark R. Way, Austin T. Swift, and Sunil-Datta Soni. A Method for the Analysis of Tabun in Multisol Using Gas Chromatographic Flame Photometric Detection. Fort Belvoir, VA: Defense Technical Information Center, May 2006. http://dx.doi.org/10.21236/ada469216.

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Birenzvige, Amnon, and Joseph P. Krasnec. Method for Sampling of Methyl Salicylate Vapor in Air Using Passivated Stainless Steel Syringes and Analysis by Gas Chromatography. Fort Belvoir, VA: Defense Technical Information Center, October 1987. http://dx.doi.org/10.21236/ada187838.

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Hewitt, Alan D., Paul H. Miyares, Daniel C. Leggett, and Thomas F. Jenkins. Comparison of Headspace Gas Chromatography with EPA SW-846 Method 8240 for Determination of Volatile Organic Compounds in Soil. Fort Belvoir, VA: Defense Technical Information Center, February 1991. http://dx.doi.org/10.21236/ada235497.

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Happell, J. D., D. W. R. Wallace, K. D. Wills, R. J. Wilke, and C. C. Neill. A purge-and-trap capillary column gas chromatographic method for the measurement of halocarbons in water and air. Office of Scientific and Technical Information (OSTI), June 1996. http://dx.doi.org/10.2172/366493.

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Pyon, K. H., D. A. Kracko, and M. R. Strunk. An isotope dilution gas chromatography/mass spectrometry method for trace analysis of xylene and its metabolites in tissues following threshold limit value exposures. Office of Scientific and Technical Information (OSTI), December 1995. http://dx.doi.org/10.2172/381363.

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Martinez, A., W. Spall, and B. Smith. A gas chromatograph/mass spectrometry method for determining isotopic distributions in organic compounds used in the chemical approach to stable isotope separation. Office of Scientific and Technical Information (OSTI), January 1990. http://dx.doi.org/10.2172/5114527.

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Lee, Richard N., Brian P. Dockendorff, and Bob W. Wright. Analytical Method for the Detection of Ozone Depleting Chemicals (ODC) in Commercial Products Using a Gas Chromatograph with an Electron Capture Detector (GC-ECD). Office of Scientific and Technical Information (OSTI), August 2008. http://dx.doi.org/10.2172/944011.

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