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Gas Chromatography Applications

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    odor control for asphalt

    Control Asphalt Odors Naturally: The production of hot mix paving asphalt generates odors that can be strong, persistent, and a nuisance to employees and neighbors alike. Controlling and abating these odors can be a challenge.

    By OMI Industries (OMI) based in Long Grove, ILLINOIS (USA).

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    PTR-MS systems for biological research

    Real-time measurement of plant defense and leaf wounding reactions. Measurement of VOCs in dynamic biological systems with low detection limit and without sample preparation.

    By Ionicon Analytik Ges.m.b.H. based in Innsbruck, AUSTRIA.

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    Gas analyzers and detectors for the ethanol processing

    Gas chromatographs and hydrocarbon analyzers can be key in adding value to the ethanol production process and protecting the environment from Volatile Organic Compound (VOC)emissions created during the process.

    By MOCON, Inc. - Baseline - AMETEK based in Lyons, COLORADO (USA).

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    Measurement of C1-C5 with carbon dioxide for oil & gas exploration.

    The PetroAlert Model 8900 combines the selectivity of gas chromatography with the sensitivity, broad dynamic range, and hydrocarbon selectivity of a flame ionization detector (FID) providing fast analysis of C1-C5 hydrocarbons and Carbon Dioxide required in Mud Logging for Oil & Gas exploration. The PetroAlert Model 8900 uses a dual column configuration with timed backflush to vent which is used to strip off moisture and C6+ hydrocarbons. A pre-cut column is used in series with the analytical column. At sample injection a fixed sample volume is carried to the pre-cut column. Backflush of the pre-cut column is timed from sample injection so that only C1-C5 hydrocarbons are eluted from the pre-cut column to the analytical column. C6+ hydrocarbons on the pre-cut column are then vented. Then a third column is used in conjunction with a second 10-port valve for individual analysis of methane. C1-C5 hydrocarbons are separated on the analytical column and elute to the flame ionization detector (FID) for analysis.

    By MOCON, Inc. - Baseline - AMETEK based in Lyons, COLORADO (USA).

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    Analysis of VOC compounds in water by Purge & Trap or dynamic headspace

    Context & Challenges Volatile organic compounds (VOC) can be dissolved in water. Sometimes water is polluted and to study contamination of VOC in finished drinking water, VOC must be measured. Chromatotec® Solutions Chromatotec® has developed a specific system for the measurement of VOC in water: a Purge & Trap system, the airmoPURGE. The analyzer is coupled with a degasing system allowing the extraction of dissolved gases. The complete system is based on: - 502.2 method from US EPA – “Volatile organic compounds in water by purge and trap capillary column gas chromatography with photoionization and electrolytic conductivity detectors in series – Revision 2.1”. - 524.2 method from US EPA – “Measurement of purgeable organic compounds in water by capillary column gas chromatography/mass spectrometry – Revision 4.0”.

    By Chromatotec Group based in Val de Virvée, FRANCE.

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    Flow meters for the general research flow solutions

    Our instruments are widely used by original equipment manufacturers of gas chromatographs, mixing and blending systems and other pieces of analytical equipment. The mulitple gas capability and wide choice of flow controlllers-for high pressure, very low flows and corrosive gases-offer customers excellent application flexibility.

    By Sierra Instruments, Inc. based in Monterey, CALIFORNIA (USA).

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    Flow meters for analytical flow solutions

    Gas mass flow controllers are widely used in gas chromatographs in order to control carrier gases and to precision purge these instruments. Our instruments also find use in custom gas mixing and blending systems for environmental research.

    By Sierra Instruments, Inc. based in Monterey, CALIFORNIA (USA).

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    Measurement of ethylene oxide for monitoring workplace exposure limits

    The Series 8900 Ethylene Oxide Analyzer combines the selectivity of gas chromatography with the sensitivity of a Photoionization Detector (PID) providing interference free response to Ethylene Oxide (EtO) at levels below 0.05 ppm. This analytical method is referenced in OSHA`s `Occupational Exposure to Ethylene Oxide: Final Standard` 29 CFR Part 1910. The system documents exposure levels including: time-weighted averages (TWA), short-term exposure limits (STEL) and instantaneous alarms. Areas that are typically monitored include; EtO Sources - gas storage areas, sterilizer doors, aeration doors, and the General Work Area - decontamination, packaging and preparation and sterile product storage areas.

    By MOCON, Inc. - Baseline - AMETEK based in Lyons, COLORADO (USA).

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    Measurement of C1-C5 hydrocarbons for oil & gas exploration.

    The PetroAlert Model 8900 combines the selectivity of gas chromatography with the sensitivity, broad dynamic range, and hydrocarbon selectivity of a flame ionization detector (FID) providing fast analysis of C1-C5 hydrocarbons required in Mud Logging for Oil & Gas exploration. The PetroAlert Model 8900 uses a dual column configuration with timed backflush to vent which is used to strip off moisture and C6+ hydrocarbons. A pre-cut column is used in series with the analytical column. At sample injection a fixed sample volume is carried to the pre-cut column. Backflush of the pre-cut column is timed from sample injection so that only C1-C5 hydrocarbons are eluted from the pre-cut column to the analytical column. C6+ hydrocarbons on the pre-cut column are then vented. C1-C5 hydrocarbons are separated on the analytical column and elute to the flame ionization detector (FID) for analysis.

    By MOCON, Inc. - Baseline - AMETEK based in Lyons, COLORADO (USA).

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    PTR-MS systems for food & flavor science

    Aroma real-time quantification with PTR-MS. Rapid screening for complex aroma systems. Rich chemical fingerprints due to soft ionization. Real-time sampling: high throughput. Ideal for chemometric data-mining methods.

    By Ionicon Analytik Ges.m.b.H. based in Innsbruck, AUSTRIA.

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    Monitoring of leaks in heat exchangers

    The Situation

    A California refinery produces xylene for use as commercial product and a precursor for petrochemical manufacturing. A primary component to the production of xylene is the isolation and purification of the chemical from a complex mixture of petroleum hydrocarbons. Steam based heat exchangers are used to process the xylene. Inherent to the design and rough duty heat exchangers face during their operation, leaks can and do develop. When a heat exchanger leaks, xylene contaminates the steam and produces a number of problems ranging from loss of final product, contamination and fouling of steam transfer piping, and ultimately bio-fouling of cooling towers. Consistent and reliable monitoring for xylene or other petroleum hydrocarbons in cooling water or steam condensate can alleviate product loss and process equipment down time.

    By Turner Designs Hydrocarbon Instruments, Inc. based in Fresno, CALIFORNIA (USA).

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    Fast C1 to C5 - PetroAlert Series 9100

    The PetroAlert® Series 9100 combines the selectivity of gas chromatography with the sensitivity, broad dynamic range, and hydrocarbon selectivity of a flame ionization detector (FID) providing a 30 second analysis of C1-C5 hydrocarbons required in Mud Logging for Oil & Gas exploration, while maintaining C1-C2 separation at 200:1 concentration ratios.

    By MOCON, Inc. - Baseline - AMETEK based in Lyons, COLORADO (USA).

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    Analytical instruments for gas chromatography

    Gas Chromatography requires a stable repeatable flow of the carrier gas with negligible temperature drift. The Axetris MFC provides excellent control of the gas flow resulting in sharp peaks and high resolution of the chromatograms. Multiple calibrations allow the control of Helium, Hydrogen or Nitrogen. Due to the high turn down ratio of 1000:1 and more, a broad range of flows can be controlled.

    By Axetris Ag based in Kaegiswil, SWITZERLAND.

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    Machine condition monitoring for labs & services

    Overview

    Machine condition monitoring using oil analysis is widely practiced by virtually every segment of modern industry that maintains large, expensive, oil-lubricated machines. In many cases, especially in smaller plants or enterprises, samples are sent to commercial oil analysis laboratories that can help monitor machinery health.

    By Spectro Scientific based in Chelmsford, MASSACHUSETTS (USA).

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    Gas analysis & monitoring system for gas purity

    The purity of a gas is an indication of the amount of other gases contained in it. A high purity refers to a low amount of other gases. High purity gas are considered to be of better quality and are generally more expensive. The purity of the gas can be expressed as a percentage or as a decimal fraction. Applications for checking the purity of the gases across different industrial sectors by air separation plants, cryogenic facilities, the quality control of industrial gases to the steel mills, etc.

    By ETG Risorse e Tecnologia S.r.l. based in Montiglio, ITALY.

  • Percent Aromatics in Gasoline #3008

    The aromatic content of gasoline determines many of its combustion properties. Since it also impacts the environmental characteristics of the fuel it is desirable to have accurate measurements of this parameter. The traditional analytical method for measuring aromatics is either gas chromatography (GC) or an older method entitled fluorescent indicator adsorption (FIA), both of which are time and labor intensive. This note will discuss the use of Guided Wave hardware and software tools for the measurement of % aromatics in fuel products using fiber optic-based, Near-Infrared (NIR) spectroscopy. NIR can be applied in real time directly in process monitoring or as a laboratory procedure. In either case NIR is a time and money saving alternative to traditional methods. Request Application Note #3008

    By Guided Wave, Inc. based in Rancho Cordova, CALIFORNIA (USA).

  • Chromatography gas analysis for air test

    By Buck Scientific Inc based in East Norwalk, CONNECTICUT (USA).

  • Chromatography systems for environmental monitoring

    With the growth of contamination generated from agricultural and industrial production, it causes a threat to the enviroment including drinking water, atmosphere and soil. The chemists have always seeked out the effective analytical methods to detect and identify chemical contaminants. Dikma provides innovative products and application solutions according to government regulations and industry standards, for air and water quality monitoring, gas detection.

    By Dikma Technologies Inc. based in Lake Forest, CALIFORNIA (USA).

  • Gas chromatography for laboratories

    By F-DGSi based in Evry Cedex, FRANCE.

  • Analysis of Pesticides in Beef Kidney

    The suitability of the new cleanup sorbent, Supel QuE Z-Sep+, has been successfully demonstrated for cleanup of beef kidney matrix. It was found to effectively reduce background without significantly reducing recovery of lipophilic pesticides such as organochlorines and some pyrethroids. GC-MS full-scan data indicated Z-Sep+ was found to provide better cleanup in the form of reduced background than PSA/C18, and less interference in the GC-MS/SIM analysis of the target pesticides themselves.

    By MilliporeSigma based in Bellefonte, PENNSYLVANIA (USA).

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