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SampleDescriptionVocabulary

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Sample > Sample handling > Storage condition > Gas atmosphere > Air

... > Heat-treatment > Heat-treatment description > Atmosphere > Oxidizing atmosphere > Air

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Air

1. The mixture of gases (roughly (by molar content/volume: 78% nitrogen, 20.95% oxygen, 0.93% argon, 0.038% carbon dioxide, trace amounts of other gases, and a variable amount (average around 1%) of water vapor) that surrounds the planet Earth. (The Environment Ontology). 2. air, mixture of gases comprising the Earth’s atmosphere. The mixture contains a group of gases of nearly constant concentrations and a group with concentrations that are variable in both space and time. (Britannica). 3. Gaseous medium surrounding the solid boundaries of a material. (MatPortal, MaterialsMine). 5. the mixture of invisible odorless tasteless gases (such as nitrogen and oxygen) that surrounds the earth (Merriam-Webster dictionary).

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https://purls.helmholtz-metadaten.de/evoks/sdv/Air

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