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Table 1 Selective coefficients of pH sensors using SSM for primary ion (H+) against interfering ions

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