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Description: software with security and validation levels Quality assurance of the measurement with internal standard Ion Chromatography Ion Chromatography Ion-exchange chromatography (or ion chromatography) is a process that allows the separation of ions and polar molecules based on the charge properties
- Instrument Type: Fixtured or Permanent
- Applications: Environmental
- Detection Method: Thermal Conductivity Detector
- Computer Interface: Yes
Standards and Technical Documents - New Columns and Applications in Process Chromatography - ANALYSIS 2003
Description: Applications of new and traditional chromatograph column materials are investigated and results are presented as practical applications of process gas chromatographs. Applications of a new molecular sieve material include light gas separations and retention time stability in the presence of CO2
Technical Journals - Characterization of Carboxylic Acids in Unpolluted Streams by Gas Chromatography -- JAW_0067118Supplier: American Water Works Association (AWWA)
Description: By Lamar, William L., Goerlitz, Donald F. This article reports on research conducted by the U.S. Geological Survey to improve techniques for the separation, identification, and measurement of natural organic compounds in water. This research involves continuous liquid-liquid extraction and vacuum
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
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 test
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 detection
Standards and Technical Documents - HEALTH AND ENVIRONMENTAL SCIENCES DEPARTMENTAL REPORT - IDENTIFICATION OF ORGANIC TOXICANTS IN TREATED REFINERY EFFLUENTS -- API DR148Supplier: American Petroleum Institute (API)
Description: , 3) failure to recover toxicity following high performance liquid chromatography (HPLC) separation, and 4) inability to adequately simplify effluent fractions containing the nonpolar organic toxicants. Procedures were employed to: 1) simplify the toxic nonpolar organic effluent fraction, 2) achieve
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 organic
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Gas Chromatograph, Ammonia/Trimethylamine Analyzer
FIS Inc. Sensor Gas Chromatograph (SGC) uses a highly sensitive semiconductor gas sensor as a gas detector. The original built-in column is small, enabling the sample gases to be very sensitive and quick separation. Real time data viewing with attached software. SGC is supplied with a standard software displaying the real-time measurement results on PC. This software has various features such as chromatography chart, gas concentration display, and continuous measurement (optional) display... (read more)
Browse Combustion Analyzers Datasheets for FIS Inc.
Gems Sensors & Controls
2-Way and 3-Way Latching Solenoid Valves
Gems Sensors & Controls (Gems) (www.gemssensors.com), a leading oil and gas industry supplier of liquid level, pressure and flow sensors, as well as fluid control devices, has reintroduced its BL Series of general purpose latching solenoid valves. The Gems BL Series is designed to support demanding 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... (read more)
Browse Flow Meters Datasheets for Gems Sensors & Controls
Conduct Research Top
of chromatography. Chromatography instruments can be defined as separation techniques involving mass-transfer between stationary and mobile phases. Gas chromatography is a technique used to separate volatile organic compounds. Gas chromatography columns (GC columns) are of two types: packed and capillary
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
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
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
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
Armstrong DW, Li W, Chang C-D, Pitha J (1990) Polar-liquid, derivatized cyclodextrin stationary phases for the capillary gas chromatography separation of enantiomers.
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 .
Textbook of the Quantitative analysis
Products can be separated by gas chromatography and decided on its thermal conductivity.
GC-MS Studies on Methoxymethylene- Substituted Phenethylamines Related to MDA, MDMA, MDEA and MDMMA
Gas chromatography separation of 4- methoxymethylene benzaldehyde and 4- ethoxy benzaldehyde ...........................................................................................36 .
CAPACITY GAS CHROMATOGRAPHY SEPARATIONS .
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.
Armstrong, D. W., Li, W., Chang, C. D., and Pitha, J. (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.