trace gas monitoring Articles

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Monitoring landfill gas

by Geotech  (Nov. 23, 2011)

Infrared absorption Infrared absorption is usually the preferred method for measuring methane and carbon dioxide. Most gases absorb radiation in the infrared region. The wavelength of radiation that is absorbed is determined by the natural vibration frequencies of the molecule. These natural frequencies will depend on several factors. Thus ...

ppb Dissolved oxygen measurement

by IC Controls  (Jan. 1, 2005)

Dissolved oxygen (D.O.) measurement is one indicator of water quality because oxygen is a common element contributing to corrosion reactions. This corrosion reaction provides the need for low level D.O. control since dissolved oxygen is responsible for costly replacement of piping and equipment by corrosive attack on metah. what is Dissolved ...

Hydrogen Chloride Analyzer (HCl, H2O)

by Los Gatos Research  (Mar. 16, 2012)

LGR's Hydrogen Chloride Analyzer (HCl, H2O) provides sensitive measurements of HCl in ambient air or in industrial process flows (e.g., coal and cement exhaust streams) with extremely high precision and sensitivity. No longer do you have to spend a lot of money or wait a long time to measure HCl with extremely high sensitivity – LGR's HCl ...

Distributed Thermal-Acoustic Data Integration

by Silixa Ltd  (Aug. 2, 2013)

Silixa has developed a technique called Distributed Thermal Acoustics (DTA) to monitor simultaneously the thermal and acoustic profile along a hybrid optical fibre cable in submarine environments. Using its world leading distributed fibre optic technology (ULTIMATM DTS and iDASTM) Silixa deployed an optical fibre cable along the seabed and across ...

Soil CO2 Flux Measurements -- Using the LI-8100 System to Collect Air Samples for Estimating Soil Trace Gas Flux

by LI-COR  (Jan. 1, 2006)

Air samples can be collected from the same air stream used to measure soil CO2 flux with the LI-8100 Automated Soil CO2 Flux System, for estimating the flux of trace gas, such as methane (CH4), ammonia (NH3), nitrous oxide (N2O), isotopic species, etc. This application note describes a simple method for obtaining air samples from the ...

Analyzing for Trace CO and CO2 using a Total Hydrocarbon Analyzer

by Baseline a MOCON company  (Dec. 1, 1999)

Untitled Document The purity of Specialty Gases is determined by the measurement of various contaminants including Total Hydrocarbons. Low level measurements of carbon ...

Praxair Selects Baseline-MOCON’s New BevAlert Gas Analyzer To Improve Detection Sensitivity Of CO2 Impurities

by Baseline a MOCON company  (May 4, 2007)

Lyons, CO — Praxair, Inc. has upgraded its carbon dioxide (CO2) gas analysis with the installation of multiple BevAlert™ Model 8900 at its plants across North America and select international locations.The BevAlert Model 8900 new gas chromatograph, from Baseline-MOCON, Inc., a subsidiary of MOCON monitors trace impurities in CO2 (and other gases) ...

FTIR resolution requirements for industrial gas analyzers

by CIC Photonics, Inc.  (Aug. 9, 2011)

FTIR Spectroscopy is a widely used technique for gas analyses in industrial applications. It is a technique used in the semiconductor industry for measuring the purity of cleaning, etching, and epi-treatment gases used with various process tools, reactors, and abatement devices. Among chemical companies and R&D facilities, FTIR is applied to ...

A novel spectrometer design for process and handheld infrared spectral measurements

by CIC Photonics, Inc.  (Aug. 9, 2011)

Introduction Infrared spectroscopy offers many unique advantages for measurements within an industrial environment. Historically, the technique has been used for a broad range of applications from the composition of gas and liquid mixtures to the analysis of trace components for gas purity analysis. In cases where a well-defined method of analysis ...

A marked improvement in the reliability of the measurement of trace moisture in gases

by Moisture Control & Measurement Ltd  (Dec. 1, 2009)

Introduction Water is an important substance without which mankind cannot survive. However, it also causes problems such as residual impurity in scientific experiments and in manufacturing processes where a high-vacuum condition or a high-purity gas is required. This is because water is present in the atmosphere in large quantities and therefore ...

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