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deltapk2
2023 Nov 06
2
non-linear regression and root finding
Dear friends - I have a function for the charge in a fluid (water)
buffered with HEPES and otherwise only containing Na and Cl so that [Na]
- [Cl] = SID (strong ion difference) goes from -1 mM to 1 mM. With known
SID and total HEPES concentration I can calculate accurately the pH if I
know 3 pK values for HEPES by finding the single root with uniroot
Now, the problem is that there is some