40
F. J. Millero
HS04 (Dickson 1990a)
In K HS04 == -4276.1 + 141.328 - 23.093 In T + A tJ.5 + B [ + C [1.5 + D P
(A.6)
A == -324.57 + 138561 T + 47.986 In T
B = 771.54 - 354741 T - 114.723 In T
C = 26981 T
D= -17761 T
HF (Dickson and Riley 1979)
log KHF == -1590.21 T + 12.641 - 1.525 f·5
Solubility of CaC0 3 (Mucci 1983)
log K~p = In Ksp(i) + A S°.5 + B S + C S1.5
log KSP(calcite) == -171.9065 - 0.077993T + 2839.3191 T + 71.595 log T
Acal = -0.77712 + 0.0028426 T + 178.341 T
Bcal == -0.07711
Ccal == 0.0041249
log KSP(aragonite) = -171.945 - 0.077993 T + 2903.2931 T + 71.595 log T
Aarag ==
-0.068393 + 0.0017276 T + 88.135 1 T
Barag =
-0.10018
Carag = 0.0059415
Relationships for the Various pH Scales (Millero 1995)
lO-pHNBS = fH[H+lr = fH[H+]p(l + [SO~-]I K HS04 + [P-] 1 K HF )
(A.7)
(A.8)
where fH is the apparent total proton activity coefficient, Ki values are the dissociation
constants (given above)
pHT = pHF -IOg(l + [SO~-]I K~S04)
pHsws = pHr 10g{{1 + f3HsoJSO~-] + ~HF[F-]) 1 (1 + f3HS04[SO~-])}
pHsws == pHF -IOg{{l + f3HS04[SO~-] + f3HFWlH
(A.10)
(A.11)
(A.12)
Effect of Temperature and Pressure on the pH of Sea Water (Millero 1979, 1995)
A = -2.6492 - 0.0011019 S + 4.9319 x 10- 6 S2 + 5.1872 X - 2.1586 X2
B = 0.10265 - 0.20322 X + 0.084431 X2 + 3-1618 x 10 -5 S
C = 4.4528 x 10- 5
where X == TA 1 TC02
(A.13)