Table 2.

Precision, accuracy, and recovery for DA.

Norminal Concentration (μg/L)	Intra-Day		Inter-Day		Analyte Recovery (%, n = 6)	Matrix Effect (%, n = 3)
	RSDr (%)	Biases (%)	RSDR (%)	Biases (%)
0.37	7.6	−6.5	10.4	−7.4	88.4 ± 8.9	96.8 ± 2.1
0.74	5.8	−4.7	12.7	−5.3	92.8 ± 5.3	97.7 ± 2.6
3.7	2.1	−1.9	3.6	−3.1	97.2 ± 2.7	100.9 ± 1.4
37	2.4	−3.1	2.6	−4.2	102.5 ± 4.3	101.7 ± 1.2