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.