Research Article

Ultratrace Determination of Cr(VI) and Pb(II) by Microsample Injection System Flame Atomic Spectroscopy in Drinking Water and Treated and Untreated Industrial Effluents

Figure 1

Influence of volume of the extraction solvent (CCl4) and dispersive solvent (ethanol) on the enrichment factor of Cr(VI) and Pb(II) at 40 mL initial volume of water samples 0.25% APDC, pH 3.00, and 0.01 mg/L Cr(VI)/Pb(II).
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