Analytical Suite Metadata

ActLabs 4F-CO2 : CO2 by IR

General Methodology:

0.2 g sample is thermally decomposed in a resistance furnace in a pure nitrogen environment at 1000 °C, using an ELTRA CW-800, directly releasing CO2. H2O is removed in a moisture trap prior to the detection of carbon dioxide in the IR cell. Carbon dioxide absorbs IR energy at a precise wavelength within the IR spectrum. Energy from the IR source is absorbed as the gas passes through the cell, preventing it from reaching the IR detector. All other IR energy is prevented from reaching the IR detector by a narrow bandpass filter. Because of the filter, the absorption of IR energy can be attributed only to carbon dioxide (CO2). The concentration of CO2 is detected as a reduction in the level of energy at the detector.

[description retrieved on 2016-02-01 from]

Instrument: unstated

Sample material: solid

Sample weight: unstated

Analytical Technique:

Hierarchical classification

Technique >> Spectroscopy >> Electromagnetic radiation >> Visible-ultraviolet >> Molecular >> Infrared



Analytical Decomposition:

Hierarchical classification

Decomposition >> None



Analytical Methods:

IndexMethod OrderMethod IDQuantityDetection Limit
1  5475     CO2_IR  0.01

Associated Analytical Packages:

IndexPackage IDPackage Name
1  296     ActLabs GSC TGI4 whole rock analysis (variant #1)
2  297     ActLabs GSC TGI4 whole rock analysis (variant #2)
3  299     ActLabs CO2 +FeO
4  313     ActLabs GSC TGI4 whole rock analysis (variant #4)
5  314     ActLabs GSC TGI4 whole rock analysis (variant #5)
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