Industrial Gases Gas Chromatographs
Description
Industrial Gases Gas Chromatographs are analytical instruments designed to separate and analyze mixtures of gases. They achieve this by utilizing a flowing mobile phase, an injection port, a separation column with a stationary phase, and a detector. The primary function of these devices is to separate organic chemical mixtures based on their physical properties, allowing for detailed analysis of the components within a gas sample.
Working Principle
Gas chromatographs operate by vaporizing compounds without inducing thermal decomposition, which allows for the separation and analysis of organic molecules and permanent gases. The separation occurs due to differences in partitioning behavior between the mobile phase and the stationary phase within the chromatograph. Various detection methods are employed, such as thermal conductivity detectors (TCD), flame ionization detectors (FID), and others, to identify and quantify the separated components. This technique is particularly useful for its ability to provide reliable analysis of complex mixtures, making it a valuable tool in analytical chemistry.
Applications
Gas chromatographs are used in a wide range of applications, including the analysis of industrial gases. Specific examples include the detection of impurities in gas bottling plants and the analysis of respiratory gases in medical and pharmaceutical applications. They are also employed in the study of anesthetic products and the separation of volatile organic compounds (VOCs) in biological samples.
Advantages over other Gas Chromatographs
One advantage of using gas chromatographs for industrial gases is their ability to separate and identify components in extremely small quantities, providing high selectivity and sensitivity. This makes them particularly effective for trace level gas analysis, where precise detection of low-concentration gas species is required.
Limitations
A significant limitation of gas chromatographs is the requirement for samples to be volatile at the column operating temperature. This means that non-volatile compounds cannot be analyzed using this technique. Additionally, the calibration of detectors for trace level gas analysis can be challenging, requiring specific gas mixers to create test mobile phases with exacting concentrations.
Considerations
When considering the use of gas chromatographs for industrial gases, several factors should be taken into account. Initial costs can be high, and operating expenses may include the need for regular calibration and maintenance of the detectors. The durability and accuracy of the instrument are crucial for reliable analysis, and replacement and maintenance costs should be factored into the overall investment. Additionally, the choice of detection method and the specific requirements of the application area will influence the overall cost and efficiency of the gas chromatograph.
from O. I. Analytical
Optional discrete purging multisampler available for automated analyses [See More]
- Application: Industrial Gases; Petroleum
- Carrier Gas Text: He, H2
- Instrument Type: Fixtured
- Detector: Flame Ionization Detector; Photo Ionization Detector
from Siemens Analytical Products
This process gas chromatograph, which has resulted from decades of international experience and technology development, leads the industry in capability, flexibility and reliability. The Maxum edition II is used in all branches of the fine chemicals, refining and hydrocarbon processing industries. [See More]
- Application: Industrial Gases
- Oven Operation: Isothermal
- Instrument Type: Fixtured
- Oven Temperature Range: 140 to 536
from Azbil Corporation
This a compact gas chromatograph that analyzes up to 11 components of natural gas and outputs the results. It is ideal for various natural gas applications including efficiency calculation of gas turbines and gas combustors and monitoring of boiler efficiency. Compact size. Compliant with ISO/GPA... [See More]
- Application: Industrial Gases
- Instrument Type: Fixtured
from Emerson Automation Solutions – Rosemount
The 1500XA Process Gas Chromatograph combines the proven analytical components of the field-mounted GCs with the larger oven capacity of a traditional air-bath oven design. The result is maximum analyzer reliability and analytical flexibility in one package. The Rosemount Analytical 1500XA Gas... [See More]
- Application: Environmental; Industrial Gases; Refineries, Petrochemical, Gas Processing, Power Generation
- Oven Operation: Oven
- Instrument Type: Fixtured
- Oven Temperature Range: 302
from COSA Xentaur Corporation
The COSA Portable BTU Gas Chromatograph is ideal for C6+ analysis of natural gas. The COSA Portable BTU Gas Chromatograph publishes 20 derived parameters, such as Calorific Value, Wobbe Index, Specific Gravity, Copressibility, Ratio of Heats, Gas Density, Real Gross Heat Value, and more.... The unit... [See More]
- Application: Energy; Industrial Gases
- Inlet Pressure Range: 7 to 70
- Instrument Type: Portable
- Remote Interface: Computer Interface; Serial communication protocol such as RS-232, RS-485, USB.; Application Software Included.
from Shimadzu Scientific Instruments, Inc.
Realize dramatic improvements in productivity with the GC-2010 Plus. Out of the box, it's ready to perform high-speed GC utilizing the latest in ultra narrow-bore capillary columns. The fourth generation Advanced Flow Controller delivers up to 1200 ml/min, 140 psi of pressure and supports split... [See More]
- Application: Cosmetics / Fragrances; Industrial Gases; Organic Chemicals; Thermal Decomposition
- Oven Operation: Oven; Temperature Programmable
- Instrument Type: Fixtured
- Oven Temperature Range: 122 to 536
from Emerson Automation Solutions – Rosemount
The Danalyzer 370XA Gas Chromatograph from Emerson Process Management is the latest analyzer to join the XA Series of Rosemount Analytical gas chromatographs. The 370XA is designed to simplify natural gas measurement analysis in Fiscal and Custody Transfer applications and improve the measurement... [See More]
- Application: Environmental; Industrial Gases; Natural Gas Applications: Custody Transfer, Production Gas Measurement, Power Generation, Gas Burner Management
- Oven Operation: Isothermal
- Instrument Type: Fixtured
- Oven Temperature Range: -4 to 140
from Shimadzu Scientific Instruments, Inc.
Shimadzu's versatile GC-2014 gas chromatograph offers exceptional performance, value, and ease of use. Ideal for routine analysis in the R&D lab or industrial setting, the GC-2014 utilizes the high-end technology of the GC-2010 Plus to cover a wide range of applications from capillary to packed... [See More]
- Application: Industrial Gases; Petroleum
- Oven Operation: Oven; Temperature Programmable
- Instrument Type: Fixtured
- Oven Temperature Range: 44.6 to 752