Enantioselective Potentiometric Membrane Electrodes Based on Antibiotics for the Determination of L- and D-Glyceric Acids

Table 2

Potentiometric selectivity coefficients for the electrodes proposed for the assay of L- and D-glyceric acids^a.

Interference species (J)	pK^potsel
	EPME based on
	Vancomycin	Teicoplanin
L-GA	—	2.39
D-GA	2.41	—
Creatine	2.09	2.08
Creatinine	2.41	2.39

^aAll measurements were made at 25°C; all values are the average of ten determinations.