trace gas monitoring Articles

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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 ...

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 ...

Analysis of Pesticides in Citrus Oil Using a Shimadzu GCMS-TQ8030

by Shimadzu Scientific Instruments Inc  (Jul. 2, 2014)

Contamination of consumer products with pesticides is a growing concern because of recognized adverse health effects, increasing world-wide usage of pesticides, and imports of raw materials from foreign sources. Citrus oils have been used for centuries for a wide range of applications: flavor/fragrance, various medicinal purposes, and others. In ...

Analysis of Pesticides in Baby Foods Using a GCMS-TQ8030 GC/MS/MS, Part II

by Shimadzu Scientific Instruments Inc  (Jul. 2, 2014)

Contamination of food products with pesticides is a growing concern because of recognized adverse health effects, increasing world-wide usage of pesticides, and increasing imports of raw foodstuffs from foreign sources. The concern is particularly acute for baby foods because of the high vulnerability of babies to health effects from synthetic ...

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 ...

Analysis of Opioids Using Isotope Dilution with GCMS-TQ8030 GC/MS/MS

by Shimadzu Scientific Instruments Inc  (Jul. 2, 2014)

Development of methods for analysis of drugs of abuse has become a high priority for both forensic toxicology and law enforcement. The large numbers of individual drugs and new "designer drugs" has made method development for these compounds a significant undertaking. Gas chromatography mass spectrometry (GCMS) has been used extensively for ...

FTIR resolution requirements for industrial gas analyses

by CIC Photonics, Inc.  (May 1, 2013)

FTIR Spectroscopy 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 epitreatment gases used with various process tools, reactors, and abatement devices. Among chemical companies and R&D faciltities, ...

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 ...

Understanding ambient air quality instrument operating ranges

by Ecotech Pty Ltd  (Jul. 11, 2012)

In order to maximize the performance of an air quality monitoring station, careful selection of instrumentations is essential. One of the key issues is to have a good understanding of what pollutants need to be measured and at what concentrations. There are several different types of air quality monitoring, these include: Trace/Background ...

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