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I know this question might seem too simplistic but I've been looking everywhere for a better than bubble but I have not found it. The most similar word would be effervescence but that's slightly different. I am "bubbling oxygen" in water and testing for oxygen dissolved but it's a formal paper and "bubbling" sounds very informal

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    $\begingroup$ I think "bubbling" is already formal enough. Other terms are more specific, i.e. you could use "oxygenation" or "aeration". $\endgroup$
    – andselisk
    Commented Mar 18, 2022 at 10:08
  • $\begingroup$ If OTOH the bubbling purpose is to eliminate or transfer volatile components, "stripping" or "purging" could be used. $\endgroup$
    – Poutnik
    Commented Mar 18, 2022 at 10:15

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"Sparging" is a common name given to bubbling a gas stream under the surface of a liquid, often with the purpose of saturating the liquid with the gas from the stream and/or displacing almost all other gasses or other volatiles from the liquid (e.g., solvents are often sparged with nitrogen or argon gas to reduce their oxygen content and allow oxidation-sensitive chemistry).

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The term is used in scientific papers, so it's probably good enough:

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