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Re: CO2 measurements

Steve writes:

> It seems to me that we should be able to make a much better estimate of
>  CO2 concentration in tanks which contain other alkaline buffers aside
>  from carbonate-bicarbonate by measuring the *change* in pH by simply
>  boiling the water to elminate dissolved CO2. I couldn't guess at how to
>  apply the formula to this but maybe Roger or George can.

The boiling may also cause changes in the carbonate present.  I hear that
carbonate levels do not directly affect pH, but in this scenario, I wouldn't
be sure.

Bob Dixon