Phosphate concentration resolution limits with different methods.

Table 1: Phosphate concentration resolution limits with different methods.

Method	Resolution limit (μM)	Refs.
FIA-P	100	[22]
Amperometric molybdate complex	0.3	[23]
Amperometric POD/O₂	1	[24]
Amperometric POD/H₂O₂	3.6	[25]
Ion chromatography	0.1	[26]
Capillary electrophoresis	0.1	[27]
Luminescent plate Europium-tetracycline	3	[28]
Fluorescent PVC matrix Al-morin ionophore	0.2	[29]

FIA-P: Flow Injection Potentiometric Analysis; POD: Pyruvate Oxidase.