Table 4. Precision, recovery and accuracy of the analyses of the target barbiturates in raw milk

Compound	Concentration(ng/g milk)	Replicate number	Recovery (%)	Intra-day RSD (%)	Intra-day RSD (%)	Accuracy (%)
Phenobarbital	10	6	86.4-100.0	1.4-5.6	3.9	94.6-117.2
	20	6	85.8-111.4	2.5-8.5	6.0	92.2-127.0
	40	6	85.0-110.6	3.8-9.8	7.3	88.5-118.8