search

romainbrette / clampy

4 stars 0 forks source link

Calculation of liquid junction potentials #8

Open romainbrette opened 5 years ago

romainbrette commented 5 years ago

The calculation of liquid junction potentials seems to be generally done using the Henderson equation. This is equation (8) in this paper. The paper also proposes a more accurate formula (eq 21-23), but probably we should be fine with Henderson equation. Then we need the activities of various ions (in fact "absolute mobility"). There's a Python library called PyEQL. We could use it or copy part of it.

romainbrette commented 5 years ago

Henderson equation is also used in a software called JPCalc, eq. (1) in this paper. See also section 3.4 on the use of AgCl electrodes.

romainbrette commented 5 years ago

Another relevant paper is Barry & Lynch (1991).