[HB+plasma] = [H+plasma] + [Bplasma] ∼ {BBB} ∼ [Bcsf] + [H+csf] = [HB+csf] | ||
pKa –pHplasma = log([HB+plasma]/[Bplasma]) | pKa – pHcsf = log ([HB+csf]/[Bcsf]) | |
2.6 = log ([HB+plasma]/[Bplasma]) | 2.7 = log([HB+csf]/[Bcsf]) | |
Antilog of equations | ||
398 = [HB+plasma]/[Bplasma] | 501 = [HB+csf]/[Bcsf] | |
[Bplasma] ∼ [Bcsf] | ||
[HB+plasma]/398 = [Bplasma] | [Bcsf] = [HB+csf]/501 | |
[HB+plasma]/398 = [HB+csf]/501 | ||
[HB+csf]/[HB+plasma] = 501/398 = 1.26 |