Research Article
Evaluation of Copper and Manganese Concentrations in Commercial Fruit Juices and Nectars Consumed in Brazil by GF AAS
Table 5
Statistical evaluation (Student’s t-test) of the results obtained in the determination of Cu and Mn by the direct GF AAS method and after acid digestion of samples.
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aF2,2 (two-sided test) = 39.00, at 95% confidence level. btcritical = 4.30 (degrees of freedom = 2), at 95% confidence level. n- and j- indicates the samples of nectar and juice, respectively. |