Table 4.

HPLC quality assurance parameters.

Analytes	Spiking level (ng/ml)		Recovery level (%)		LOD (μg/kg)	LOQ (μg/kg)	Average recoveries (%)		Mean recoveries		R
	Winter	Summer	Winter	Summer			Winter	Summer	Winter	Summer
AflatoxinB1	1	1	0.70	0.75	5.7 × 10−5		70	75
	5	5	3.80	4.2		1.7 × 10−4	76	84	72.33	75.7	0.9997
	10	10	7.1	6.8			71	68
Aflatoxin B2	0.25	0.25	0.16	0.18	1.4 × 10−3		64	72
	0.75	0.75	0.45	0.55		4.2 × 10−3	60	73.3	71	79.9	1.0000
	1.25	1.25	1.12	1.18			89	94.4
Aflatoxin G1	1	1	0.92	0.9			92	90
	5	5	4.1	4.3	3.9 × 10 −7	1.2 × 10−6	82	86	89	89	0.9998
	10	10	9.3	9.1			93	91
Aflatoxin G2	0.25	0.25	0.17	0.22			68	88
	0.75	0.75	0.65	0.69	1.3 × 10−6	3.9 × 10−6	87	92	75	89.3	0.9995
	1.25	1.25	0.87	1.1			70	88