A Method for preparing a gaseous isotope reference, a method for determining an isotope ratio in a sample, and use of graphite for preparing a gaseous carbon and/or oxygen isotope reference

Teemu Kääriäinen; Juho Salminen; Albert Manninen; Guillaume Genoud

A Method for preparing a gaseous isotope reference, a method for determining an isotope ratio in a sample, and use of graphite for preparing a gaseous carbon and/or oxygen isotope reference

Teemu Kääriäinen (Inventor)
, Juho Salminen (Inventor)
, Albert Manninen (Inventor)
, Guillaume Genoud (Inventor)

BA6313 Optical spectroscopy

Research output: Patent › Patent

Abstract

According to an example aspect of the present invention, there is provided a method for preparing a gaseous isotope reference, the method comprising: providing a solid or liquid carbon-containing material exhibiting a carbon isotope ratio; providing oxygen gas or a gas mixture comprising oxygen gas, wherein said gas or gas mixture exhibits an oxygen isotope ratio; determining said carbon isotope ratio in the solid carbon-containing material and/or determining said oxygen isotope ratio in the oxygen gas or the gas mixture comprising oxygen; bringing the solid carbon-containing material in contact with the oxygen gas or the gas mixture comprising oxygen gas, in a high temperature in order to oxidize at least a part of the solid carbon-containing material to carbon dioxide to obtain the gaseous carbon and/or oxygen isotope reference in the form of carbon dioxide.

Patent family as of 21.7.2026
FI130881 B, FI20205222 A, US2023087498 AA, WO21176141 A1

Original language	English
Patent number	FI130881 B1
IPC	C01B32/50
Priority date	3/03/20
Filing date	3/03/20
Publication status	Published - 7 May 2024
MoE publication type	H1 Granted patent

Cite this

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abstract = "According to an example aspect of the present invention, there is provided a method for preparing a gaseous isotope reference, the method comprising: providing a solid or liquid carbon-containing material exhibiting a carbon isotope ratio; providing oxygen gas or a gas mixture comprising oxygen gas, wherein said gas or gas mixture exhibits an oxygen isotope ratio; determining said carbon isotope ratio in the solid carbon-containing material and/or determining said oxygen isotope ratio in the oxygen gas or the gas mixture comprising oxygen; bringing the solid carbon-containing material in contact with the oxygen gas or the gas mixture comprising oxygen gas, in a high temperature in order to oxidize at least a part of the solid carbon-containing material to carbon dioxide to obtain the gaseous carbon and/or oxygen isotope reference in the form of carbon dioxide. Patent family as of 21.7.2026 FI130881 B, FI20205222 A, US2023087498 AA, WO21176141 A1",

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T1 - A Method for preparing a gaseous isotope reference, a method for determining an isotope ratio in a sample, and use of graphite for preparing a gaseous carbon and/or oxygen isotope reference

AU - Kääriäinen, Teemu

AU - Salminen, Juho

AU - Manninen, Albert

AU - Genoud, Guillaume

PY - 2024/5/7

Y1 - 2024/5/7

N2 - According to an example aspect of the present invention, there is provided a method for preparing a gaseous isotope reference, the method comprising: providing a solid or liquid carbon-containing material exhibiting a carbon isotope ratio; providing oxygen gas or a gas mixture comprising oxygen gas, wherein said gas or gas mixture exhibits an oxygen isotope ratio; determining said carbon isotope ratio in the solid carbon-containing material and/or determining said oxygen isotope ratio in the oxygen gas or the gas mixture comprising oxygen; bringing the solid carbon-containing material in contact with the oxygen gas or the gas mixture comprising oxygen gas, in a high temperature in order to oxidize at least a part of the solid carbon-containing material to carbon dioxide to obtain the gaseous carbon and/or oxygen isotope reference in the form of carbon dioxide. Patent family as of 21.7.2026 FI130881 B, FI20205222 A, US2023087498 AA, WO21176141 A1

AB - According to an example aspect of the present invention, there is provided a method for preparing a gaseous isotope reference, the method comprising: providing a solid or liquid carbon-containing material exhibiting a carbon isotope ratio; providing oxygen gas or a gas mixture comprising oxygen gas, wherein said gas or gas mixture exhibits an oxygen isotope ratio; determining said carbon isotope ratio in the solid carbon-containing material and/or determining said oxygen isotope ratio in the oxygen gas or the gas mixture comprising oxygen; bringing the solid carbon-containing material in contact with the oxygen gas or the gas mixture comprising oxygen gas, in a high temperature in order to oxidize at least a part of the solid carbon-containing material to carbon dioxide to obtain the gaseous carbon and/or oxygen isotope reference in the form of carbon dioxide. Patent family as of 21.7.2026 FI130881 B, FI20205222 A, US2023087498 AA, WO21176141 A1

UR - https://fi.espacenet.com/publicationDetails/biblio?II=0&ND=3&adjacent=true&locale=fi_FI&FT=D&date=20230323&CC=US&NR=2023087498A1&KC=A1

M3 - Patent

M1 - FI130881 B1

Y2 - 2020/03/03

ER -

A Method for preparing a gaseous isotope reference, a method for determining an isotope ratio in a sample, and use of graphite for preparing a gaseous carbon and/or oxygen isotope reference

Abstract

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