Direct Zinc Determination in Brazilian Sugar Cane Spirit by Solid-Phase Extraction Using Moringa oleifera Husks in a Flow System with Detection by FAAS

Table 3

Experimental recovery for determination of zinc in Brazilian cachaça samples by online preconcentration method.

Sample	Zn (μg L^−1)		Recovery (%)
	Added	Found*
1	10.0	9.2±0.1	92.5
	40.0	39.9±0.5	99.9
2	10.0	10.8±0.2	108.4
	40.0	39.2±0.4	97.9
3	10.0	10.3±0.2	103.1
	40.0	39.9±0.5	99.8
4	10.0	9.0±0.1	90.4
	40.0	37.4±0.5	93.6

*Results are expressed as mean values ± S.D. based on three replicate (𝑛=3) determinations. Confidence interval, 95%.