Relevant bibliographies by topics / Capillary column inverse gas chromatography

Contents

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

Academic literature on the topic 'Capillary column inverse gas chromatography'

Author: Grafiati
Published: 4 June 2021
Last updated: 13 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Capillary column inverse gas chromatography.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Capillary column inverse gas chromatography"

1

Hamdan, E., J. F. Milthorpe, and J. C. S. Lai. "New approach for evaluation of capillary column inverse gas chromatography." Journal of Chromatography A 1078, no. 1-2 (2005): 144–51. http://dx.doi.org/10.1016/j.chroma.2005.05.021.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Faridi, Niloufar, J. L. Duda, and Ronald P. Danner. "Diffusion of Solvents in Polybutadiene Rubber Using Capillary Column Inverse Gas Chromatography." Rubber Chemistry and Technology 69, no. 2 (1996): 234–44. http://dx.doi.org/10.5254/1.3538368.

Full text
Abstract:
Abstract The capillary column inverse gas chromatography (CCIGC) method at infinite dilution of solvent was used to measure the diffusion and partition coefficients of cyclohexane, toluene, n-heptane, chloroform and methyl ethyl ketone in polybutadiene (BR, 95% cis). Experiments were performed over a temperature range of 0 to 70°C. Chromatographic data analysis was carried out in terms of the elution model described by Pawlisch and coworkers. Attempts to conduct experiments at temperatures below 0°C yielded erroneous results. At these low temperatures the high activity of the solvent causes the system to be far from the linear portion of the absorption isotherm or in some cases results in condensation in the capillary column. The Vrentas-Duda free-volume diffusion model was used to interpret and correlate the diffusion data obtained at infinite dilution of the solvent.
APA, Harvard, Vancouver, ISO, and other styles
3

Kanatyeva, Anastasiya, Alexander Korolev, Valeria Shiryaeva, Tamara Popova, and Alexander Kurganov. "Characterization of monolithic capillary columns using inverse gas chromatography." Journal of Separation Science 32, no. 15-16 (2009): 2635–41. http://dx.doi.org/10.1002/jssc.200900196.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Pawlisch, Craig A., A. Macris, and Robert L. Laurence. "Solute diffusion in polymers. 1. The use of capillary column inverse gas chromatography." Macromolecules 20, no. 7 (1987): 1564–78. http://dx.doi.org/10.1021/ma00173a023.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Mistryukov, E. A., and I. K. Korshevetz. "“Inverse” injection system for gas—liquid chromatography with capillary columns." Journal of Chromatography A 322 (January 1985): 206–11. http://dx.doi.org/10.1016/s0021-9673(01)97673-3.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Zielinski, John M., Roderick Fry, and Michael F. Kimak. "Probing Multicomponent Thermodynamic Effects by Low- and High-Pressure Capillary Column Inverse Gas Chromatography." Macromolecules 37, no. 26 (2004): 10134–40. http://dx.doi.org/10.1021/ma048556k.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Pawlisch, Craig A., John R. Bric, and Robert L. Laurence. "Solute diffusion in polymers. 2. Fourier estimation of capillary column inverse gas chromatography data." Macromolecules 21, no. 6 (1988): 1685–98. http://dx.doi.org/10.1021/ma00184a027.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Baltus, Ruth E., Montgomery M. Alger, and Thomas J. Stanley. "Solubility and diffusivity of cyclic oligomers in poly(dimethylsiloxane) using capillary column inverse gas chromatography." Macromolecules 26, no. 21 (1993): 5651–56. http://dx.doi.org/10.1021/ma00073a018.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Cai, W. D., N. Ramesh, F. Tihminlioglu, R. P. Danner, J. L. Duda, and A. DèHaan. "Phase equilibrium and diffusion of solvents in polybutadiene: A capillary-column inverse gas chromatography study." Journal of Polymer Science Part B: Polymer Physics 40, no. 10 (2002): 1046–55. http://dx.doi.org/10.1002/polb.10156.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Hamdan, E., J. F. Milthorpe, and J. C. S. Lai. "The influence of nonuniform coating and taylor dispersion on the evaluation of capillary column inverse gas chromatography." Journal of Chromatography A 1091, no. 1-2 (2005): 137–44. http://dx.doi.org/10.1016/j.chroma.2005.07.043.

Full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "Capillary column inverse gas chromatography"

1

Hamdan, Emad Aerospace Civil &amp Mechanical Engineering Australian Defence Force Academy UNSW. "Extended macroscopic dispersion model with applications to confined packed beds and capillary column inverse gas chromatography." Awarded by:University of New South Wales - Australian Defence Force Academy. School of Aerospace, Civil and Mechanical Engineering, 2008. http://handle.unsw.edu.au/1959.4/38732.

Full text
Abstract:
Until present, many researchers relied on the conventional plug flow dispersion models to analyse the concentration profiles obtained from the tracer injection experiments to evaluate the dispersion coefficients in packed beds. The Fickian concept in the limit of long time duration is assumed to be applicable and it implies that the mean-square displacement of the tracer profile is constant with time and the concentration profile is Gaussian. There were very few studies on identifying the conditions under which this assumption is valid and delineate the range of applicability of the existing plug flow dispersion models. If the time scales of a tracer injection experiment are not sufficient for a tracer to traverse the bed radius and sample the velocity variations, this could give rise to persisting non-Fickian transients where the mean-square displacement of the tracer profile is not constant with time and the concentration profile deviates from the normal Gaussian distribution. These transients cannot be predicted by the conventional plug dispersion models. An extended axial non-Fickian macroscopic dispersion model is derived to describe the transient development of a solute tracer when injected into a fluid flowing through a cylindrical packed bed or empty tube and some non-Fickian effects in the dispersion process. The flow profile in beds packed with uniform particles exhibits radial non-uniformity due to the oscillatory variation in porosity because of the wall confinement (wall effect). Compared with the axial plug flow dispersion model, the extended model contains time-dependent coefficients such as the transient axial dispersion coefficient and higher order derivatives (higher than second order) of the cross-sectionally averaged concentration. Including them provides some insight on non-Fickian transport in the dispersion process. The model provides time criteria on the basis that the effelongitudinal dispersion coefficient in the packed bed reaches its asymptotic value and the non-Fickian transients will die out. Some experimental conditions in the literature were checked by these criteria and found to be either marginally satisfied, or not satisfied at all, which indicates that the Fickian concept is not valid. The model results for tracer dispersion in cylindrical packed beds show that the longitudinal dispersion coefficient converges to its asymptotic value on a time scale proportional to R2/(DT) where R is the column radius and (DT) is the area averaged lateral dispersion coefficient. The extended model encouraged study of the consequences of the additional dispersion terms in other applications such as the pulse spread in the field of capillary column inverse gas chromatography (CCIGC). CCIGC is used to evaluate the solute-polymer diffusion coefficient Dp and the partition coefficient K at infinite dilute conditions. The tube geometry in CCIGC is more complex than the conventional Taylor dispersion problem due to the polymer coating on the inside of the capillary wall. The extended CCIGC model presented in this study has advantages over the previous models by including the effects of Taylor dispersion and higher order derivatives of the pulse area-averaged concentration. Taylor dispersion effect causes more pulse spread in the longitudinal direction and by not including it in the CCIGC regression models may cause a significant error in the measured Dp values. The extended CCIGC model provides for the first time criteria on capillary dimensions for the transient coefficients (multiplying the second and higher order derivatives) to become constant and for the non-Fickian effects associated with the higher order derivatives to be neglected. Model results show that Taylor dispersion effect has a significant effect on the elution profiles at high values of Dp and/or low values of gas diffusion coefficients Dg and it can be used to increase the sensitivity range of the previous CCIGC models at extremely low and high Dp values.
APA, Harvard, Vancouver, ISO, and other styles
2

Armstrong, Stephanye Dawn. "The effects of carrier gas viscosity on column efficiency in capillary gas chromatography." Thesis, This resource online, 1995. http://scholar.lib.vt.edu/theses/available/etd-06162009-063602/.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Cripe, M. Kathleen Leslie. "Syntheses and characterization of a t-OCTYLCALIX[5]ARENE derivatized capillary column for gas chromatography." Connect to online version at OhioLINK ETD Connect to online version at Digital.Maag, 1998. http://hdl.handle.net/1989/3749.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

McLean, Michael M. "Phenyl Functionalized Sol-gel Silica Sorbent for Capillary Microextraction and Chromia-Based Sol-gel Ucon Stationary Phase for Capillary Gas Chromatography." Scholar Commons, 2014. https://scholarcommons.usf.edu/etd/5374.

Full text
Abstract:
The first chapter of this thesis presents an introduction to sol-gel methodology whose usefulness as a synthetic route will be demonstrated with two applications in chromatography. The first application involves the fabrication of a capillary micro-extraction (CME) device by coating a phenyl functionalized extracting phase on the inner surface of a fused silica capillary for analyte pre-concentration. The device was coupled on-line to a RP-HPLC system and practicality was demonstrated using allergens as target analytes. The allergens chosen as model analytes are typically found in fragrance products and food. Most of the 26 fragrance allergens that are monitored by various government authorities have a phenyl organic moiety (a strong chromophore), thus making them appropriate probes for exploring the extraction efficiency of the coating using a UV detector. The CME device showed ppt level limit of detection which makes it suitable for trace analyses of allergens and similar compounds in a variety of matrices. The second application explores the feasibility of using sol-gel derived chromia-based stationary phase in gas chromatographic columns. The organic moiety of the stationary phase was derived from Ucon 75-H-90,000 while the inorganic backbone was prepared using chromium(III) dichloride hydroxide - methacrylic acid - aqua complex, 40% in isopropanol/acetone . Usefulness of prepared chromia-based GC stationary phase was examined for petrochemical application. Promising results were obtained using aliphatic-aromatics, polyaromatic hydrocarbons, BTEX test mixture, cycloalkanes, branched alkanes and akylbenzenes. The column was able to perform without degradation despite being rinsed multiples times sequentially with the following solvents: dichloromethane, methanol, water and finally methanol again. Maximum theoretical plate number calculated is around 2,400 plates/m. The plate number clearly needs improvement but is a promising result for the newly explored chromia-based stationary phase. The maximum programmable temperature is 250oC which is comparable with similar commercially available polar stationary phases.
APA, Harvard, Vancouver, ISO, and other styles
5

Wang, Anzi. "Microchip Thermal Gradient Gas Chromatography." BYU ScholarsArchive, 2014. https://scholarsarchive.byu.edu/etd/4300.

Full text
Abstract:
Although the airbath oven is a reliable heating method for gas chromatography (GC), resistive heating is needed for higher analytical throughput and on-site chemical analysis because of size, heating rate and power requirements. In the last thirty years, a variety of resistive heating methods were developed and implemented for both benchtop and portable GC systems. Although fast heating rates and low power consumption have been achieved, losses in column efficiency and resolution, complex construction processes and difficulties experienced in recovering damaged columns have also become problematic for routine use of resistively heated columns. To solve these problems, a new resistively heated column technique, which uses metal columns and self-insulated heating wires, was developed for capillary gas chromatography. With this method, the total thermal mass was significantly less than in commercial column assemblies. Temperature-programming using resistive heating was at least 10 times faster than with a conventional oven, while only consuming 1—5% of the power that an oven would use. Cooling a column from 350 °C to 25 °C with an air fan only required 1.5 min. Losses in column efficiency and peak capacity were negligible when compared to oven heating. The major trade-off was slightly worse run-to-run retention time deviations, which were still acceptable for most GC analyses. The resistively heated column bundle is highly suitable for fast GC separations and portable GC instruments. Fabrication technologies for microelectromechanical systems (MEMS) allow miniaturization of conventional benchtop GC to portable, microfabricated GC (µGC) devices, which have great potential for on-site chemical analysis and remote sensing. The separation performance of µGC systems, however, has not been on par with conventional GC. Column efficiency, peak symmetry and resolution are often compromised by column defects and non-ideal injections. The relatively low performance of µGC devices has impeded their further commercialization and broader application. This problem can be resolved by incorporating thermal gradient GC (TGGC) into microcolumns. Negative thermal gradients reduce the on-column peak width when compared to temperature-programmed GC (TPGC) separations. This unique focusing effect can overcome many of the shortcomings inherent in µGC analyses. In this dissertation research, the separation performance of µGC columns was improved by using thermal gradient heating with simple set-ups. The analysis time was ~20% shorter for TGGC separations than for TPGC when wide injections were performed. Up to 50% reduction in peak tailing was observed for polar analytes, which significantly improved their resolution. The signal-to-noise ratios (S/N) of late-eluting peaks were increased by 3 to 4 fold. These results indicate that TGGC is a useful tool for bridging the performance gap between µGC and benchtop GC.
APA, Harvard, Vancouver, ISO, and other styles
6

MacFarlane, John K., and Philip M. Gschwend. "Field analysis of groundwater for volatile organic contaminants using on-column aqueous injection capillary gas chromatography." MIT Energy Lab, 1987. http://hdl.handle.net/1721.1/18198.

Full text
Abstract:
Northeast Utilities Service Company, Southern California Edison Company, Empire State Electric Energy Research Corporation, American Power Service Company, Standard Oil Company and New England Power Service Company under the MIT Energy Laboratory Utilites Program
APA, Harvard, Vancouver, ISO, and other styles
7

Alli, Azaam. "Analysis of organomercurials in environmental and biological samples by capillary column gas chromatography with atomic fluorescence detection." FIU Digital Commons, 1994. http://digitalcommons.fiu.edu/etd/1069.

Full text
Abstract:
The general method for determining organomercurials in environmental and biological samples is gas chromatography with electron capture detection (GC-ECD). However, tedious sample work up protocols and poor chromatographic response show the need for the development of new methods. Here, Atomic Fluorescence-based methods are described, free from these deficiencies. The organomercurials in soil, sediment and tissue samples are first released from the matrices with acidic KBr and cupric ions and extracted into dichloromethane. The initial extracts are subjected to thiosulfate clean up and the organomercury species are isolated as their chloride derivatives by cupric chloride and subsequent extraction into a small volume of dichloromethane. In water samples the organomercurials are pre-concentrated using a sulfhydryl cotton fiber adsorbent, followed by elution with acidic KBr and CuSO 4 and extraction into dichloromethane. Analysis of the organomercurials is accomplished by capillary column chromatography with atomic fluorescence detection.
APA, Harvard, Vancouver, ISO, and other styles
8

Silva, Meire Ribeiro da. "Desenvolvimento, avaliação e aplicação de um sistema de cromatografia gasosa de alta pressão." Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/75/75135/tde-18102012-160554/.

Full text
Abstract:
A cromatografia é uma técnica de separação cuja classificação se dá por meio do estado físico da fase móvel (líquido, gasoso, supercrítico, entre outros). Dentre as técnicas cromatográficas mais utilizadas e cujo conhecimento é bastante conhecido está a cromatografia gasosa. Embora esta técnica tenha sido bastante estudada existem ainda algumas vertentes que não totalmente estudadas, sendo uma delas a cromatografia gasosa de alta pressão na entrada da coluna (HIPGC). A HIPGC destaca por oferecer vantagens analíticas como alta eficiência, maior velocidade no tempo de análise e também facilita a migração de compostos com alta massa molecular. As desvantagens e dificuldades estão concentradas na instrumentação. O uso de alta pressão requer conexões que suportem tal pressão, sistema de injeção adequado a fim de eliminar vazamentos entre outros. Neste trabalho, sucessivos sistemas instrumentais foram montados visando o desenvolvimento, aprimoramento e avaliação de um sistema instrumental simples e versátil para HIPGC. Na avaliação do sistema foi utilizada coluna capilar empacotada pelo método \"slurry packed\". A escolha da coluna foi realizada a partir de curvas de eficiência de Van deemter. O sistema instrumental desenvolvido para HIPGC é apropriado para pressões de entrada de até 1800 psi. Além disso, este sistema apresentou boa reprodutibilidade nas análises e não apresentou vazamentos. Os resultados mostraram o potencial da técnica HIPGC na redução do tempo de análise.<br>Chromatography is a separation technique whose classification takes place by means of the physical state of the mobile phase (liquid, gas, supercritical, etc.). Among the most commonly used chromatographic techniques and whose knowledge is well known is gas chromatography. Although this technique has been widely exploited there are some topics which weren\'t fully investigated, one of them being high-pressure chromatography column input (HIPGC). HIPGC shows analytical advantages as high efficiency, faster analysis time and facilitates the migration of compounds with high molecular mass. The main difficulties in HIPGC are found in the instrumentation. The high pressure requires an appropriate connection that works in this range of pressure and one injection system suitable to transport the sample at different pressures. In this work, different instrumental systems were assembled to develop equipment to HIPGC that is simple and versatile. In the system evaluation was used capillary columns packed by methodology\'s \"slurry packed\" were used. The choice of the column was made from van Deemter efficiency curves. The system developed for instrumental HIPGC it is appropriate for inlet pressures up to 1800 psi. Furthermore, this system showed good reproducibility of analysis and didn\'t show leaks. The results showed the potential of HIPGC, such as shorter analysis time.
APA, Harvard, Vancouver, ISO, and other styles
9

Arnould, Dominique Daniel. "Capillary column inverse gas chromatography (CCIGC) for the study of diffusion in polymer-solvent systems." 1989. https://scholarworks.umass.edu/dissertations/AAI9001477.

Full text
Abstract:
Capillary Column Inverse Gas Chromatography (CCIGC) has been developed for accurate measurement of diffusion coefficients in polymer-solvent systems at conditions approaching infinite dilution of the volatile component. Measurements of diffusion coefficients have been made for a wide range of solvents in poly(methyl methacrylate) (PMMA), poly(vinyl acetate) (PVAc), and poly(p-methyl styrene) (PPMS). These data are analyzed using a free-volume theory of diffusion to investigate the effects of the solvent and the glass transition on the diffusion process. Experimental data for PPMA-solvent and PVAc-solvent systems clearly demonstrate that certain solvent molecules are able to move segmentally in these polymers. Some of the parameters that influence the size of the solvent jumping unit have been identified experimentally. These are: the size of the entire solvent molecule, the flexibility and geometry of the solvent molecule, and the amount of free-volume present in the polymer. The results suggest that the current free-volume theory of diffusion does not provide a complete description of the diffusion process of solvent molecules that move segmentally. Finally, diffusivity data measured above and below the glass transition temperature of PMMA and PPMS are used to test a free-volume theory of diffusion in glassy polymers. The data appear to be well correlated by the theory, but some of the theoretical predictions were not confirmed experimentally.
APA, Harvard, Vancouver, ISO, and other styles
10

"Field analysis of groundwater for volatile organic contaminants using on-column aqueous injection capillary gas chromatography." Energy Laboratory, Massachusetts Institute of Technology, 1987. http://hdl.handle.net/1721.1/29474.

Full text
Abstract:
by John K. McFarlane and Philip M. Gschwend.<br>Includes bibliographical references.<br>Sponsored by Northeast Utilities Service Company, Southern California Edison Company, Empire State Electric Energy Research Corporation, American Power Service Company, Standard Oil Company and New England Power Service Company under the MIT Energy Laboratory Utilites Program.
APA, Harvard, Vancouver, ISO, and other styles

Books on the topic "Capillary column inverse gas chromatography"

1

Grob, Konrad. On-column injection in capillary gas chromatography: Basic technique, retention gaps, solvent effects. 2nd ed. Hüthig, 1991.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
2

Grob, Konrad. On-column injection in capillary gas chromatography: Basic technique, retention gaps, solvent effects. Hüthig, 1987.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
3

Yancey, M. F. Capillary column GC-MS determination of 77 purgeable organic compounds in two simulated liquid wastes. U.S. Environmental Protection Agency, Environmental Monitoring and Support Laboratory, 1988.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
4

Yancey, M. F. Capillary column GC-MS determination of 77 purgeable organic compounds in two simulated liquid wastes. U.S. Environmental Protection Agency, Environmental Monitoring and Support Laboratory, 1988.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
5

Yancey, M. F. Capillary column GC-MS determination of 77 purgeable organic compounds in two simulated liquid wastes. U.S. Environmental Protection Agency, Environmental Monitoring and Support Laboratory, 1988.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
6

Yancey, M. F. Capillary column GC-MS determination of 77 purgeable organic compounds in two simulated liquid wastes. U.S. Environmental Protection Agency, Environmental Monitoring and Support Laboratory, 1988.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
7

Yancey, M. F. Capillary column GC-MS determination of 77 purgeable organic compounds in two simulated liquid wastes. U.S. Environmental Protection Agency, Environmental Monitoring and Support Laboratory, 1988.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
8

Flores, Pedro. Determination of volatile organic compounds in soils using equilibrum headspace analysis and capillary column gas chromatography/mass spectrometry: Project summary. Environmental Protection Agency, Environmental Monitoring Systems Laboratory, 1993.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
9

Harke, Heather Ruth. Evaluation of a new microwave plasma cavity as a mercury and selenium selective detector for capillary column gas chromatography. National Library of Canada, 1990.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
10

Zaugg, Steven D. Determination of wastewater compounds in whole water by continuous liquid-liquid extraction and capillary-column gas chromatography/mass spectrometry. U.S. Geological Survey, 2006.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Book chapters on the topic "Capillary column inverse gas chromatography"

1

Arnould, Dominique, and Robert L. Laurence. "Solute Diffusion in Polymers by Capillary Column Inverse Gas Chromatography." In ACS Symposium Series. American Chemical Society, 1989. http://dx.doi.org/10.1021/bk-1989-0391.ch008.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Bartle, Keith D., Anthony A. Clifford, Peter Myers, et al. "Packed Capillary Column Chromatography with Gas, Supercritical, and Liquid Mobile Phases." In ACS Symposium Series. American Chemical Society, 1999. http://dx.doi.org/10.1021/bk-2000-0748.ch009.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Günther, W., and F. Schlegelmilch. "Handling, Quick Optimization and Choice of Column Wall Material in Capillary Gas Chromatography." In Essential Oils and Aromatic Plants. Springer Netherlands, 1985. http://dx.doi.org/10.1007/978-94-009-5137-2_7.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Chang, Huey-Ching K., Keith D. Bartle, Karin E. Markides, and Milton L. Lee. "Structural Comparison of Low-Molecular-Weight Extractable Compounds in Different Rank Coals Using Capillary Column Gas Chromatography." In Advances in Coal Spectroscopy. Springer US, 1992. http://dx.doi.org/10.1007/978-1-4899-3671-4_7.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Snyder, A. Peter, William H. McClennen, and Henk L. C. Meuzelaar. "Rapid Characterization of Microorganisms by Curie-Point Pyrolysis in Combination with Short-Column Capillary Gas Chromatography and Ion Trap Mass Spectrometry." In Analytical Microbiology Methods. Springer US, 1990. http://dx.doi.org/10.1007/978-1-4899-3564-9_13.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

ZWEIG, GUNTER. "Capillary Column Gas Chromatography of Pesticides." In Modern Analytical Techniques. Elsevier, 1986. http://dx.doi.org/10.1016/b978-0-12-784314-8.50006-2.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

"The Evolution of Capillary Column Gas Chromatography: A Historical Overview." In A Century of Separation Science. CRC Press, 2001. http://dx.doi.org/10.1201/9781482270921-9.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Lipsky, S. R. "The Fused Silica Glass Capillary Column For Gas Chromatography – The Anatomy Of A Revolution." In Journal of Chromatography Library. Elsevier, 1985. http://dx.doi.org/10.1016/s0301-4770(08)60174-8.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Margarita Hernandez-Baez, Diana, Alastair Reid, Antonin Chapoy, Bahman Tohidi, Roda Bounaceur, and François Montel. "Reactive Transport and Its Implications on Heavy Oil HTGC Analysis. A Coupled Thermo-Hydro-Chemical (THC) Multiphysics Modelling Approach." In Recent Advances in Gas Chromatography [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.98614.

Full text
Abstract:
This chapter provides an insight into the reactive transport in a capillary column which heavy-oil hydrocarbons undergo when analysed by high temperature gas chromatography (HTGC), and their implications on characterisation outcomes, namely thermal cracking of the injected sample; and incomplete or non-elution of heavy components from the column, by using a coupled Thermo-Hydro-Chemical (THC) multiphysics modelling approach. For this purpose, a computational coupled THC, multicomponent, multi-physics model is developed, accounting for: multiphase equilibrium using an in-house, extended thermodynamics distribution factors dataset, up to nC98H198; transport and fluid flow in COMSOL and MATLAB; and chemical reactions using kinetics and mechanisms of the thermal cracking, in CHEMKIN. The determination of the former extended dataset is presented using two complementary HTGC modes: i) High-Efficiency mode, with a long column operated at low flow rate; and ii) true SimDist mode, with a short column operated at high flow rate and elution up to nC100H202.
APA, Harvard, Vancouver, ISO, and other styles
10

"Samples of raw and treated slurry were centrifuged at 10,OOOg for 20 minutes at 10°C, as described by Hissett et al (25), to prepare the supernatants for the measurement of BOD. Determination. of. Total ..Organic A?ids, (TOA) TOA were determined, in the supernatant prepared as described by Hissett et al (25), by the method of Montgomery et al (26). The organic acids were esterified with acidified ethylene glycol. The esters were then reacted with hydroxylamine and the hydroxamic acids thus formed were converted to their ferric complexes and their concentrations were determined by optical density measurements at 500u. Gas-liauid Chromatography of VFA and TIP A Pye series 104 gas-liquid chromatograph (Pye Unicam Ltd.,Cambr idge,UK.) and a Packard model 439 gas-liquid chromatograph (Packard Instrument Ltd.,Reading,UK.) with a Hewlett Packard HP 3390A reporting integrator (Hewlett Packard Ltd.,Cheshire,UK.) were used. Determination of VFA were by direct injection of acidified supernatant samples into a 2.15 m long by 4mm ID packed column of 5% FFAP on Cnromosorb G.AW.DMCS 80/100 mesh. Determination of TIP were by direct injection of solvent extracts, of whole samples (30), into a 25 m long by 0.23 mm ID capillary column of WCOT fused Silica with liquid phase CP sil 5CB (United Technologies Packard,Reading,UK.). Odour Assessment The odour panel consisted of 21 College Staff who had previous odour panel experience (5) and 5 staff who were later recruited and whose performances at slurry odour assessments were judged to be similar to those of the original panellists. The method of assessment of odour offensiveness was based on that of Sobel (19). 20 ml samples of slurry were tranferred to 60 ml black glass bottles as described by Williams (5). These were handed to panellists in their own offices or laboratories where they were already accustomed to the background odour and were least hindered by interruption. The panellists were shown a copy of Table I and asked to assign the odour offensiveness of each sample to a value between 0 and 5. They were specifically requested not to consider the samples relative strength compared with the other samples." In Odour Prevention and Control of Organic Sludge and Livestock Farming. CRC Press, 1986. http://dx.doi.org/10.1201/9781482286311-121.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Capillary column inverse gas chromatography"

1

Gurka, Donald F., and Richard Titus. "Hazardous Waste Analysis By Direct-Linked Fused Silica Capillary Column Gas Chromatography/Fourier Transform Infrared/Mass Spectrometry." In 1985 International Conference on Fourier and Computerized Infrared Spectroscopy, edited by David G. Cameron and Jeannette G. Grasselli. SPIE, 1985. http://dx.doi.org/10.1117/12.970788.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Turina, E. L., S. G. Efimenko, Yu A. Kornev та A. P. Liksutina. "Results of Сamelina oil assessment". У РАЦИОНАЛЬНОЕ ИСПОЛЬЗОВАНИЕ ПРИРОДНЫХ РЕСУРСОВ В АГРОЦЕНОЗАХ. Federal State Budget Scientific Institution “Research Institute of Agriculture of Crimea”, 2020. http://dx.doi.org/10.33952/2542-0720-15.05.2020.35.

Full text
Abstract:
Camelina sativa (L.) Crantz – is an annual oilseed crop in the family Brassicaceae. The aim of the research was to study oil obtained from camelina seeds cultivated in the Crimea. Determination of fatty acid composition was carried out on the gas chromatograph “Хроматэк – Кристалл 5000” (Hromatek - Crystal 5000); automatic dosing unit ДАЖ-2М (DAJ- 2M); capillary column SolGelWax 30m × 0.25 mm × 0.5 μm; carrier gas – helium; speed – 22 centimeters per second; programming temperature –178–230 °С. The preparation of fatty acid methyl esters (FAMEs) using gas-liquid chromatography (GC) was performed in line with the methodology. The content of biologically active substances (tocopherols) in Camelina sativa oil was carried out using thin-layer chromatography (TLC) and spectroscopy. To obtain biofuel, we used the transesterification of triglyceride (or triacylglycerols) of camelina oil with methyl alcohol using potassium hydroxide (or sodium) as a homogeneous catalyst, as well as active metal oxides or enzymes (regiospecific lipase) as heterogeneous catalysts. Camelina sativa oil, obtained from false flax cultivated in the Crimea, should be used, first of all, to ensure healthy, dietary and therapeutic nutrition of the locals and tourists. Since, depending on the variety and the amount of precipitation, it contains 17.89-19.66% of linoleic acid; 33.02-37.06% of linolenic acid; not more than 3.05% of erucic acid. Furthermore, the ratio of omega-3 to omega-6 fatty acids varies from 1.7: 1.0 to 2.2: 1.0 even in wet years. The oil from the winter camelina seeds (‘Penzyak’ variety) in its composition and properties is suitable for the synthesis of biodiesel by the methanolysis reaction using a homogeneous alkaline catalyst. The physical and chemical properties of the obtained biodiesel are similar to those of sunflower or rapeseed oils.
APA, Harvard, Vancouver, ISO, and other styles
3

Saab, Joseph, Ramy Abou Naccoul, Juliette Stephan, Rosette Ouaini, Jacques Jose, and Naim Ouaini. "Dynamic Fluid Saturation Method for Hydrocarbons Thermodynamics’ Properties Determination." In ASME/JSME 2007 5th Joint Fluids Engineering Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/fedsm2007-37114.

Full text
Abstract:
Low solubility compounds suffer from lack of data, leading to an impoverishment in thermodynamic parameters such as Gibbs free energy (ΔG), enthalpy of dissolution (ΔH), entropy (ΔS), infinite dilution coefficient (γ∞) and isobaric heat capacity (Cp) of utmost practical importance for industrial optimization processes. Dynamic fluid method is a novel technique for low solubility (expressed as molar fraction χ) determination based on the saturation of a specific heated fluid passing through a saturation cell. The heated components are kept inside a chromatographic oven maintained at a constant temperature to within ± 0.05°C by means of a PID temperature controller. A regular stream of fluid, using a constant flow pump, passes through the saturation cell packed with an inert stationary phase (Gaz chrom R 60/80) pre-coated with the organic compound. The solute transported by the fluid is subsequently trapped in a specific extraction column (inverse phase). The organic compound is removed by back flushing using the appropriate solvent in order to dissolve and carry out the totality. A low flow of fluid through the generator column is to be set to avoid safely the formation of colloidal dispersion, to increase the contact time and to keep small pressure drops across the generator/extractor column. The gas chromatography coupled to mass spectrometer detector is used in order to quantify the solute. The validation of this apparatus was achieved by comparison of our values with the ones extracted from previous papers using the static method to determine aqueous solubility of the ethylbenzene, and a precision of our solubility measurements was established to be better than 0.2%. In continuous, aqueous solubility and thermodynamics properties of perfluorocarbons compounds were determined in the range of temperature from 273 K to 333 K. Considering the contribution of chromatographic, calibration and other operational errors, the combined measurement uncertainty (standard deviation) was established to be less than 3%.
APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "Capillary column inverse gas chromatography"

1

Methods of analysis by the U.S. Geological Survey National Water Quality Laboratory--Determination of wastewater compounds by polystyrene-divinylbenzene solid-phase extraction and capillary-column gas chromatography/mass spectrometry. US Geological Survey, 2002. http://dx.doi.org/10.3133/wri20014186.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

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. US Geological Survey, 2003. http://dx.doi.org/10.3133/wri034139.

Full text
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the extended bibliographies on the topic 'Capillary column inverse gas chromatography' for particular source types:
Journal articles Books
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography