HPR-40 MIMS System Assists in Denitrification Studies - Sponsored Whitepaper

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Hiden Analytical
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Denitrification is the process carried out by bacteria that converts nitrites and nitrates to nitrogen, nitric oxide and nitrous oxide gases. Two of these gases have been linked with ozone layer depletion and global warming. Denitrification is an anaerobic process and occurs in environments where oxygen levels are depleted, such as within soils and groundwater. The Hiden HPR- 40 membrane inlet mass spectrometer (MIMS), designed for the measurement of dissolved gas species, is ideally suited to the study of such processes and simultaneously and continuously measures multiple gas species in real-time down to ppb levels.

The membrane materials used in the inlet systems have high permeability to many gases and organic vapours but low permeability to water vapour. They provide an efficient barrier between the media and the mass spectrometer and are available in the form of probes, for insertion into the sample, and in the form of circular capsules for flow-through applications. Multiple inlets are available for laboratory applications with up to eight Typical reults from a study of denitrification in separate sampling points being monitored under the control of a sterile lake water (data courtesy JR Firth and C single mass spectrometer. The vacuum system is fully protected Edwards, published in the Journal of Applied Microbiology 88, 853-859) with automatic sampling line isolation in the event of membrane failure.
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