K1p: First dissociation constant of phosphoric acid (mol/kg)
Description
First dissociation constant of phosphoric acid (mol/kg)
Usage
K1p(S = 35, T = 25, P = 0, pHscale = "T")
Arguments
S
Salinity, default is 35
T
Temperature in degrees Celsius, default is 25oC
P
Hydrostatic pressure in bar (surface = 0), default is 0
pHscale
choice of pH scale: "T" for using the total scale, "F" for using the free scale and "SWS" for using the seawater scale, default is total scale
Value
K1pFirst dissociation constant of phosphoric acid (mol/kg)
encoding
latin1
Details
Note that the arguments can be given as a unique number or as vectors. If the lengths of the vectors are different, the longer vector is retained and only the first value of the other vectors is used. It can therefore be critical to use vectors of the same length.
The pressure correction was applied on the seawater scale. Hence, values were first transformed from the total scale to the seawater scale, the pressure correction applied as described by Millero (1995), and the value was transformed back to the required scale (T, F or SWS).
References
Millero F. J., 1995. Thermodynamics of the carbon dioxide system in the oceans. Geochimica Cosmochimica Acta59: 661-677.
Dickson A. G., Sabine C. L. and Christian J. R., 2007 Guide to best practices for ocean CO2 measurements. PICES Special Publication3, 1-191.