SPE/TLC/Densitometric Quantification of Selected Synthetic Food Dyes in Liquid Foodstuffs and Pharmaceutical Preparations

Table 4

Dye contents in spiked preparations determined by SPE/TLC/densitometry.

	Dye	Expected dye content	Recovered dye content	CV [%]	Recovery [%]
		µgµL^−1	µgµL^−1
Blue drink	E133	0.15	0.14	3.1	93.3
		0.45	0.41	2.7	91.1
		0.75	0.73	3.3	97.3
Red drink	E122	0.15	0.14	1.6	93.3
		0.45	0.42	2.5	93.3
		0.75	0.71	3.0	94.7
Red drink	E124	0.15	0.13	4.1	86.7
		0.45	0.43	2.9	95.6
		0.75	0.72	2.3	96.0
Yellow drink	E110	0.15	0.14	2.8	93.3
		0.45	0.42	3.2	93.3
		0.75	0.74	2.7	98.7
Yellow drink	E102	0.15	0.13	3.3	86.7
		0.45	0.42	2.9	93.3
		0.75	0.73	3.4	97.3