Randy sent me quick reply, before I was about to leave for the weekend

"I believe that buffering capacity of normal seawater is lower at pH 7.8 than at 8.2,
which in turn is lower than at pH 8.5:"


I would assume after looking a at a pC-pH diagram, for seawater, that an increase on the
low pH side, would not take place until you reach a pH of about 7.5 when it is almost all
bicarb.

So I stand corrected

I replied with a couple of more questions. Maybe long ago I read to much into Millero's
remark on "Bc is not the same thing as Alk" and " Bc can be calculated from Alk". To most
chemical oceanographers Bc is a function of CO2, as the Alk does not change and any
changes in pH is due to CO2/ So, in short seawater has really little, if any buffering
capacity


--
Boomer

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WCWing@nospamChartermi.Net
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