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Supplier: ASTM International
Description: as contaminant. Custom designed metallic bodies made of implant quality material and exhibiting different surface textures served as test coupons. The analysis of the residues was carried out using gas chromatography separation and mass spectrometry analysis. The amount of organic residues found on the testShow More
Technical Journals - Liquid Chromatography-Mass Spectrometry: An Emerging Technology for Nonvolatile Compounds (PDF) -- JAW_0028425Supplier: American Water Works Association (AWWA)
Description: Most currently regulated organic compounds found in drinking water are amenable to separation and measurement by gas chromatography. A new generation of compounds being proposed for regulation includes some that are not amenable to separation and measurement with this technique. The emergingShow More
Supplier: IHS Product Design
Description: PETROLEUM PRODUCTS AND USED OILS; DETERMINATION OF PCBS AND RELATED PRODUCTS; PART 1: SEPARATION AND DETERMINATION OF SELECTEDPCB CONGENERS BY GAS CHROMATOGRAPHY (GC) USING AN ELECTRON CAPTUREDETECTOR (ECD)Show More
Description: In the Hydrocarbon Processing Industry (HPI) there are a number of on-line Process Gas Chromatography (PGC) applications that require the separation of light gas components such as Helium, Hydrogen, Oxygen/Argon, Nitrogen, Methane, and Carbon Monoxide. The traditional approach to these needs hasShow More
Description: ) is presented for volatile acids. A new method using gas chromatography is included for the determination of acetic, propionic, butyric, isobutyric, valeric, and isovaleric acids (5560D).
- Form: Liquid / Solution
Description: The Model 55i's measurement of methane and non-methane hydrocarbons (NMHC's) is based on the well established method of gas chromatography, utilizes flame ionization detection and features a proprietary column design to achieve ultimate separation of methane from all C2 compounds
- Instrument Type: Analyzer
- Mounting Type: Fixed
- Application: Continuous Emissions Monitoring, Ambient Air Monitoring
- Measurement Type: Trace
Standards and Technical Documents - Soil quality -- Determination of some selected chlorophenols -- Gas-chromatographic method with electron-capture detection -- ISO 14154:2005
Description: also be applied to other solid samples such as sediments and solid wastes. ISO 14154:2005 describes an acid-base liquid extraction, followed by acetylation and then liquid/liquid extraction. Determination of mass concentrationis then carried out by gas chromatography and electron-capture detectionShow More
Supplier: TCI America
Description: SILREST [Column conditioner for Gas chromatography] / For GC analysis, the substance to be analyzed must be in the gaseous form. Because of this, the analysis of many organic compounds requires that injections, columns, and detectors are kept at relatively high temperatures. However, many organicShow More
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Gems Sensors & Controls
2-Way and 3-Way Latching Solenoid Valves
fluid control requirements, such as those common to natural gas separation, natural gas plunger lifts, gas chromatography equipment, irrigation systems, pneumatic pipelines, and others. Offered with choice of either 2-way or 3-way design, the BL Series allows a user to pulse the valve itself. This (read more)
Browse Flow Meters Datasheets for Gems Sensors & Controls
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Introduction to Gas Chromatography
Analytical chemists that wish to perform qualitative and quantitative analysis on samples are often faced with situations that require separation of the compound(s) of interest from the bulk sample. While some types of analysis do not require this separation, many do. There are several methods
Selecting Makeup Gas for GC with FID (.pdf)
When gas chromatography is employed for the detection of trace compounds, the characteristics of the carrier gas used for the actual separation and the gas used for detection may be significantly different. As an example, the carrier gas flow rate is selected to provide optimum resolution
Texas Instruments: Novel Separation Technique for the Analysis of Trace Levels of Atmospheric Contaminants in Inert Semiconductor Process Gases
Low ppb detection limits for contamination in cylinder gases have been achieved with gas chromatography using a modified gas injection system and megabore capillary columns with a variety of detectors including mass spectrometry, atomic emissions, and discharge ionization. Components of interest
How are CNTs Purified?
"Purification of CNTs generally refers to the separation of CNTs from other entities, such as carbon nanoparticles, amorphous carbon, residual catalyst, and other unwanted species. The classical chemical techniques for purification (such as filtering, chromatography, and centrifugation) have been
Light Crude Oil Fingerprinting from Six Different Global Regions Using GCxGC-TOFMS with Structural Classifications to Compare Functional Group Differences
The complex nature of crude oil demands analytical. solutions and instrumental methods that will separate and. identify the complex chemical profile as well as. characterize key chemical functional group class. differences between complex samples. Comprehensive. two-dimensional gas chromatography
MICRO: Extreme Silicon - Sun (March 2000)
Fourier transform infrared spectroscopy, ion mobility spectrometry, time-of-flight ion mass spectrometry, x-ray photoelectron spectroscopy, and thermal desorption gas chromatography mass spectrometry. However, all these methods have limitations. They either lack the capability to identify specific
MICRO: Extreme Silicon - Sun (March 2000)
gas chromatography mass spectrometry. However, all these methods have limitations. They either lack the capability to identify specific contaminants or are unable to quantify total organics accurately. This article describes a new technique that uses thermal desorption gas chromatography (TD-GC
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Practical Gas Chromatography
1990) Polar-liquid, derivatized cyclodextrin stationary phases for the capillary gas chromatography separation of enantiomers.
Textbook of the Quantitative analysis
Products can be separated by gas chromatography and decided on its thermal conductivity.
Handbook of Elemental Speciation: Techniques and Methodology Complete Document
In general, gaseous sample introduction is achieved by simply transporting the analyte vapor to the source in a flow of He gas, as is the case in most gas chromatography separations .
CAPACITY GAS CHROMATOGRAPHY SEPARATIONS .
Gas chromatography separation of 4- methoxymethylene benzaldehyde and 4- ethoxy benzaldehyde ...........................................................................................36 .
Analysis of Seawater
Another variation on the method  with slightly higher sensitivity (several ng/l) used the liquid nitrogen cold trap and gas chromatography separation , but used the standard gas chromatography detectors or atomic absorption for the final measurement.
1990) Polar-liquid, derivatized cyclodextrin stationary phases for the capillary gas chromatography separation of enantiomers. Anal.
Basic Principles of Forensic Chemistry
Gas chromatography separates the components of a gaseous mixture and introduces them sequentially into a detector.
Annual review of the literature on fats, oils, and detergents. Part II
Gas chromatography separation factors between methyl esters of unsaturated faty acids was shown to be a feasible means of tentative identification (Ackman, Ibid., 564).