Table 2.

Comparison between analytical methods for determination of orthophosphate.

Analytical methods	Linear range (µM)	LOD (µM)	References
Capillary electrophoresis (CE)	0.5–10	0.45	34
Photometric	4.8–100	0.64	35
Spectrophotometry (blue method assay)*	0.14–10	0.04	36
Spectrophotometry (yellow method assay)*	0.1–60	0.052	37
Ion Chromatography (IC)	1.6–806	0.76	38
Square wave voltammetry (MoxOy/PDAAQ/GC)	0.03–4	0.009	This study

*The methods were applied in microfluidic Lab on Chip.