From: Potentiometric performance of flexible pH sensor based on polyaniline nanofiber arrays
Ions (J)
log KIJPOT
KIJPOT
Na+
− 9.80
1.59 × 10−10
K+
− 8.86
1.37 × 10−9
NH4+
− 10.23
5.82 × 10−11
Ca2+
− 9.56
2.70 × 10−10
Mg2+
− 11.48
3.34 × 10−12