NDLI: FT-IR metrology aspects for on-line monitoring of CO<sub>2</sub> and CH<sub>4</sub> in underground laboratory conditions

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Analytical Methods Vol - 3 Issue - 3

Analytical Methods Vol - 3 Issue - 2

Analytical Methods Vol -2

Analytical Methods Vol -1

FT-IR metrology aspects for on-line monitoring of CO₂ and CH₄ in underground laboratory conditions

Content Provider	Royal Society of Chemistry (RSC)
Author	Cailteau, Cristelle Garnier, Christophe Barres, Odile Donato, Philippe de Vinsot, Agnés Pironon, Jacques Fierz, Thomas
Copyright Year	2011
Abstract	The French National Radioactive Waste Management Agency (ANDRA) has recently developed a new experimental set-up which allows sampling water from marl rock formations, together with an in situ characterisation of the composition and migration mechanisms of the gases dissolved in the marl porewater. Gases and liquids are collected from vertical borehole drillings in underground laboratories. The analytical design, Fourier transformed infrared spectroscopy based, allows powerful and long term on-line monitoring of gases released by low-permeability media. The IR system is designed to cope with the unfavourable measurement conditions occurring in an experimental underground laboratory (moisture, dust, etc.). Because the working conditions in such an underground laboratory make complete purging of the IR spectrometer difficult, the IR spectra of geological gases are often perturbed by contributions from atmospheric CO2 and water vapour. The metrology aspect is based on an IR low resolution sensor equipped with two measurement compartments. In the internal compartment linked to the borehole layout, gases are monitored on-line through a cell with a variable optical path, whereas in the external compartment, atmospheric CO2 is measured through a short open path configuration. The experimental method and data processing procedure used to determine the real partial pressure of CO2 arising from the marl rock formation are described in this paper. Results of the on-line gas (CO2 and CH4) monitoring conducted in the Mont Terri underground laboratory are presented and compared with punctual gas chromatography analyses.
Starting Page	877
Ending Page	887
Page Count	11
File Format	HTM / HTML PDF
ISSN	17599660
Volume Number	3
Issue Number	4
Journal	Analytical Methods
DOI	10.1039/c0ay00623h
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	French National Radioactive Waste Management Agency Infrared spectroscopy Mont Terri Gas chromatography Partial pressure Fourier List of rocks on Mars Metrology Australian National Drag Racing Association Borehole Spectrometer ANDRA
Content Type	Text
Resource Type	Article
Subject	Analytical Chemistry Engineering Chemical Engineering

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In situ gas monitoring in clay rocks: mathematical developments for CO₂ and CH₄ partial pressure determination under non-controlled pressure conditions using FT-IR spectrometry

CO2 Long-term Periodic Injection Experiment at the Underground Rock Laboratory, Mont Terri

Applications of Chromatography/Fourier Transform Infrared Spectroscopy

Impact of the heterogeneity of the sandy Opalinus clay facies at the Mont Terri underground research laboratory on radionuclide migration

Liquid Chromatography/Fourier Transform Infrared Spectroscopy

A novel technique for the metrology calibration of a fourier transform spectrometer.

In-Situ FT-IR Spectroscopy Investigation of CH4 and CO2 Reaction

Selected Applications of Modern FT-IR Techniques

Chromatography/Fourier Transform Infrared Spectroscopy and Its Applications

FT-IR metrology aspects for on-line monitoring of CO₂ and CH₄ in underground laboratory conditions

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FT-IR metrology aspects for on-line monitoring of CO₂ and CH₄ in underground laboratory conditions