Evaluation of Copper and Manganese Concentrations in Commercial Fruit Juices and Nectars Consumed in Brazil by GF AAS

Figure 1

Pyrolysis and atomization curves of (a) Cu and (b) Mn in the two media under test (nectar and juice) and in aqueous standard solution (Cu concentration = 15 µg L⁻¹ and Mn concentration = 5.0 µg L⁻¹). The curves for nectar and juice were constructed using the samples S₂ and S₂₀ diluted (1 : 10 to 1 : 40) with 0.70 mol L⁻¹ HNO3 solution.

(a)

(b)