Hi John,
How about a nice concise definition to store with the standard name?
Might it also be useful to capture the expertise you have behind this proposal and create a full set of pH standard names, embracing the scales you mention (that are new to me) and the version widely used outside the carbonate system community based on moles of hydrogen ion per litre?
Cheers, Roy.
>>> John Graybeal <graybeal at mbari.org> 03/09/09 8:12 PM >>>
In the ocean we are measuring pH, and I have not found a term for pH
in the standard names. We therefore propose for our particular
measurement
sea_water_pH_total_scale
Two notes: First, about the scale. The total_scale refers to one of
the 3 scales with which pH is measured in sea water: total scale, sea
water scale, and free scale (these all represent chemical activity,
with units in moles/kg). Although many of these have the same units
(moles/kg), the actual value will be different (in non-trivial ways)
in the different scales. As the value in total_scale will not be
immediately convertible to a value in free scale they are measurements
with different meanings and can be easily confused. It was not
obvious to me how this should be indicated other than by the standard
name.
Second, pH has the H capitalized, reflecting common usage. I couldn't
see any rule against this but I wanted to point it out, just in case.
John
--------------
John Graybeal -- 831-775-1956 -- Monterey Bay Aquarium Research
Institute
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Received on Wed Mar 11 2009 - 07:18:52 GMT
