Determination of Low Levels of Lead in Beer Using Solid-Phase Extraction and Detection by Flame Atomic Absorption Spectrometry

<table>Pareto chart obtained from the optimization study of the variables, with their significance, for the preconcentration of Pb(II) using <i>Moringa oleifera </i>seeds as the sorbent and FAAS.</table>

Journal of Analytical Methods in Chemistry

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Figure 2

Figure 2: Determination of Low Levels of Lead in Beer Using Solid-Phase Extraction and Detection by Flame Atomic Absorption Spectrometry 