Talk:Anoxic waters

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Wiki Education Foundation-supported course assignment[edit]

This article was the subject of a Wiki Education Foundation-supported course assignment, between 24 August 2020 and 8 December 2020. Further details are available on the course page. Student editor(s): Brownem5.

Above undated message substituted from Template:Dashboard.wikiedu.org assignment by PrimeBOT (talk) 14:24, 16 January 2022 (UTC)[reply]

Equation[edit]

Before I worked on this article, it included a long chemical equation. I could not make sense of it, but here it is with superscripts and subscripts added. If anyone can figure out how to correct it, please feel free to put it back on the page.

(CH₂O)106(NH₃)16H₃PO₄ + 53 SO₄^2- 53 CO₂ + 53 HCO₃^- + 53 HS^- +16 NH₃ + 53 H₂O + H₃PO₄

--Ginkgo100 20:59, 9 May 2006 (UTC)[reply]

It looks like an anaerobic decay reduction formula of some kind, but it is missing the "goes to". For example, the classic anaerobic decay reduction equation for sulfate reduction is:

(CH₂O)106(NH₃)16H₃PO₄ + SO₄^2- → 106 HCO₃^- + 53 H₂S + 16 NH₃ + H₃PO₄

That means that the products are 106 units of bicarbonate ion (hydrogen carbonate), 53 units of Hydrogen Sulfide, 16 units of Ammonia, and one unit of Phosphoric acid. Corrected, your equation should read:

(CH₂O)106(NH₃)16H₃PO₄ + 53 SO₄^2- → 53 CO₂ + 53 HCO₃^- + 53 HS^- +16 NH₃ + 53 H₂O + H₃PO₄

which is just a variation on the classic sulfate reduction formula. See Martin, Ronald E. (1999) "Table 3.2 Idealized sequence of organic matter breakdown with depth in sediment" Taphonomy: A Process Approach Cambridge University Press, Cambridge, England, p.112, ISBN 0-521-59833-8, for a list of additional decay equations, including the anaerobic decay reduction formula that produces manganese nodules. --Bejnar (talk) 02:01, 27 November 2008 (UTC)[reply]

- I put the equation back in verbatim as above because it looks more useful. But is it right? E x nihil ^(talk) 03:02, 7 February 2013 (UTC)[reply]

Anoxic "water"?[edit]

How is water lacking in oxygen still water at all? I've always been taught that water is H2O. If you take out the O you just have liquid hydrogen. --98.203.233.109 (talk) 20:16, 26 November 2008 (UTC)[reply]

Most water has dissolved oxygen in it; the oxygen is in solution. As you know water is a solvent. The amount of dissolved oxygen can be measured. In fact one of the ways that previous world climates are investigated is by measuring the various isotopes of oxygen that are dissolved in the ice from various levels in the Greenland icesheet. I have added the word "dissolved" in front of "oxygen" in the lead sentence to make it clearer. Thanks for your comment. --Bejnar (talk) 01:12, 27 November 2008 (UTC)[reply]

Uncited crib from this article[edit]

In a new book Altenbach, Alexander V. (2012). Anoxia. Dortrecht: Springer Verlag. p. ix. ISBN 978-94-007-1896-8., the author appears to have used this article for information in his introduction. The text is almost directly comparable, which is, I guess, a compliment. Some of the text that was cribbed appeared here in the Wikipedia more than three years before Altenbach's book. --Bejnar (talk) 19:11, 29 January 2013 (UTC)[reply]

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