How to analyze H2S, all Mercaptans, THT as well as total sulfur for monitoring natural gas or gaseous fuels in metering station? (10-November-2016)

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How to analyze H2S, all Mercaptans, THT as well as total sulfur for monitoring natural gas or gaseous fuels in metering station?




Natural gas is colourless and odourless in its most pure form. When extracted, it can contain sulfur compounds such as H2S and Mercaptans that when in the presence of moisture can produce sulfuric acid that can degrade the pipeline. So for reasons of public safety as well as pipeline integrity, there is a need to measure and control precisely the level of odorant species in natural gas :
- adjust the amount of sulfur molecules in the gas
- control of odorant passivation
- aids in detection of leaks

For more than 30 years, Chromatotec® has manufactured the energyMEDOR, based on the gas chromatography principles, to measure H2S, all mercaptans, sulfides, Tetrahydrothiophene (THT) and total sulfur in natural gas. Due to the advantages of the “MEDOR” technology, a new guideline was defined, ASTM D7493-08 (as the Standard Test Method for Online Measurement of Sulfur Compounds in Natural Gas and Gaseous Fuels by Gas Chromatograph and Electrochemical Detection). The energyMEDOR by Chromatotec® is fully compliant with this guideline.

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nothing to display Petro Industry News - october 2016 Petro Industry News - october 2016 (1.6 Mb)

Monitoring of Terpene Emissions from Pine Trees by Auto-TDGCs (27-October-2015)

It has been established that organic aerosols (OA) makes up a major fraction of fine particulate matter in all region of the atmosphere. This fraction accounts approximately for half of the total PM2.5 dry mass. Primary OA is directly emitted in the trophosphere from anthropological and natural sources whereas secondary OA (SOA) is formed in-situ in the atmosphere from the oxidation of biogenic or anthropogenic gas-phase precursors and subsequent partitioning of the less volatile products into the particle phase.

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nothing to display IET article Terpenes IET article Terpenes (3.2 Mb)

Continuous Monitoring of Odourous Compounds in Waste Water Treatment Plants - Sensory approach or Physico-chemical solution? (03-October-2014)

Authors : Jean Philippe AMIET, Louis VIVOLA

Odour measurement is a demanding topic to manage due to the complexity of existing solution and the methodology used.

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nothing to display IET Buyers'Guide 2014 IET Buyers’Guide 2014 (812.9 kb)

Gas Chromatography: MCERTS Certification for Ambient Air Analysis on Benzene and VOCs (03-October-2013)

Authors : Franck Amiet, Michel Robert, Dr Nicholas A Martin

Due to environmental issues, the world of gas analysis is evolving very rapidly. Governments set the rules to limit and control the environmental pollution through legislation. Volatile organic compounds (VOCs), often produced by human activities, are amongst the sources of pollution that
need to be identified and quantified for safety reasons. Exposure to high concentrations of certain VOCs is dangerous, even for short times, and the impact of low concentrations of VOCs on people’s health and environment has also become a major concern in recent years. The concentration of such compounds can be very different depending on the measurement area and it is a considerable technological challenge to analyse precisely and continuously the VOCs present in air within industrial walls or at the top of a mountain using the same instrument. Presently, only benzene is regulated, but there are moves to measure other VOCs which are known to be ozone precursors.

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nothing to display IET Buyers'Guide 2013 IET Buyers’Guide 2013 (1.9 Mb)