In Situ Synthesis of a Magnetic Graphene Platform for the Extraction of Benzimidazoles from Food Samples and Analysis by High-Performance Liquid Chromatography

Table 1

Analytical performance and results for HPLC-UV determination of five BMZs using magnetic graphene.

Compounds	Equation of linearity		Range	LOD	LOQ	RSD
			(µg/L)	(ng/L)	(ng/L)	(%)
OXF	= 9.31 × 10^4 × 10^2	0.9966	0.100–100	19.4	58.7	3.4
MEB	= 7.62 × 10^4 × 10^2	0.9992	0.100–100	28.3	84.6	5.7
FLU	= 7.26 × 10^4 × 10^2	0.9998	0.100–100	27.4	82.8	7.6
ALB	= 6.45 × 10^4 × 10^3	0.9988	0.100–100	32.3	97.4	5.4
FEN	= 1.01 × 10^5 × 10^2	0.9986	0.100–100	17.2	52.2	4.9

LOD and LOQ were estimated on the basis of 3 : 1 and 10 : 1 signal to noise ratios, respectively.
The method precision was monitored with 1.0 µg/L mixed standard solution and the RSD of extraction amounts of five BMZs.