Aqueous Two-Phase Systems: A New Approach for the Determination of Brilliant Blue FCF in Water and Food Samples

Table 2

Determination of brilliant blue FCF in water and food samples by the proposed aqueous two-phase system (𝑛=3).

Sample	Added (ng/mL)	Found ± SD^a (ng/mL)	RSD %	Recovery %
Smarties morvarid (mino CO)	0	25.1±1.2	4.3	—
	10	34.8±1.7	4.8	97.0
	40	64.3±3.8	5.9	98.0
Fruity candy (ben ben)	0	32.1±1.4	4.3	—
	10	42.2±1.8	4.2	101.0
	40	73.0±2.1	2.8	102.2
Strawberry jelly	0	23.8±0.7	2.9	—
	10	33.7±1.4	4.1	99.0
	40	62.3±2.3	3.7	96.3
Water	0	0.0	3.6	—
	10	9.6±0.2	2.1	96.0
	40	40±1.8	4.5	100.0

^aStandard deviation.