Simultaneous Preconcentration of Fast Green FCF and Rhodamine B Using Deep Eutectic Solvent and Determination via High-Performance Thin Layer Chromatography

Table 8

Comparison of the proposed method with other analytical techniques for the determination of fast green FCF and rhodamine B.

Analyte	Preconcentration factor	RSD (%)	Analytical technique	References
FG	15	1.52	CPE-UV-VIS spectrophotometry	[33]
Rh B	8.5	2.40	CPE-UV–VIS spectrophotometry	[47]
Rh B	100	0.87	HPLC	[48]
Rh B	25	2.3	UV-VIS spectrophotometry	[29]
FG	21.66	3.65	DES-HPTLC	Current research
Rh B	21.66	3.47	DES-HPTLC	Current research

CPE: cloud point extraction, DES: deep eutectic solvent, FG: fast green FCF, HPLC: high-performance liquid chromatography, HPTLC: high-performance thin layer chromatography, Rh B: rhodamine B, and RSD: relative standard deviation.