Re: Dissolved O2 Saturation Levels in F/W

[Mark Fisher <Mark.Fisher at tpwd_state.tx.us>]

>From Spotte (1979) [Seawater Aquariums, pg.337] - derived from data in
>Murray and Reiley (1969)
>Chlorinity (%) = 0
>[Temp C][O2 mg/l] -> 5(12.75) 10(11.29) 15(10.10) 20(9.11) 25(8.27)
30(7.56)

These values agree with my references (Tchobanoglous, G.  1985.  Water
quality.  Addison-Wesley; Manahan, S.  1979.  Environmental Chemistry.
Willard Grant Press, Boston).  These values are for sea level, or 760 mm
Hg.
>
>From Audey (1991) [Dynamic Aquaria, pg. 186] - derived from Horne
(1969)
>Salinity = 0 ppt
>[Temp C][O2 mg/l] -> 5(14.8) 10(13.0) 15(10.3) 20(9.4) 25(8.5) 30(7.8)

These values are too high for normal atmospheric pressure (my chart goes
up to 780 mm Hg).
>
>From George Booth's website
>
>[Temp F][O2 mg/l] -> 75 F (8.1) or {23.8 C)(8.1)

These values are correct for a lower atmospheric pressure (=higher
elevation).  My reference cites these values for 735 mm Hg.

Regards,

Mark

---

• Prev by Date: t-8 bulb and ballast source in Canada
• Next by Date: Black substrate?
• Prev by thread: Dissolved O2 Saturation Levels in F/W
• Next by thread: Re: Dissolved O2 Saturation Levels in F/W
• Index(es):
  • Date
  • Thread