International Journal of Analytical Chemistry / 2011 / Article / Tab 1

Research Article

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 1

Conditions for preconcentration of zinc and analytical response for the study of multivariate optimization using SPE with detection by FAAS.

RunSorbent mass (mg)pHSample flow rate (mL min−1)Eluent concentration (mol L−1)Integrated
absorbance

1304.03.00.50.4473
2604.03.00.50.4806
3309.03.00.50.3160
4609.03.00.50.3926
5304.06.00.50.4136
6604.06.00.50.4430
7309.06.00.50.4473
8609.06.00.50.4358
9304.03.01.50.3780
10604.03.01.50.1696
11309.03.01.50.2877
12609.03.01.50.2055
13304.06.01.50.4236
14604.06.01.50.4277
15309.06.01.50.4894
16609.06.01.50.4864

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