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

المؤلفون المشاركون

Rocha, Pamela S. M.
Cruz, Graziela F. B.
Cassella, Ricardo J.

المصدر

Journal of Analytical Methods in Chemistry

العدد

المجلد 2020، العدد 2020 (31 ديسمبر/كانون الأول 2020)، ص ص. 1-10، 10ص.

الناشر

Hindawi Publishing Corporation

تاريخ النشر

2020-10-16

دولة النشر

مصر

عدد الصفحات

10

التخصصات الرئيسية

الكيمياء

الملخص EN

The present work proposes a simple method for direct determination of Cu and Mn in commercial fruit juices and nectars by graphite furnace atomic absorption spectrometry (GF AAS).

We analyzed samples of different flavors (orange, mango, passion fruit, peach, and grape) and brands of Brazilian commercial fruit juices and nectars.

We also carried out a study to define a suitable temperature program and to optimize the calibration conditions.

It was possible to determine Cu and Mn in the samples just after a simple dilution of samples with a 0.70 mol L−1 HNO3 solution, except in the case of grape juice.

We compared the results obtained with the proposed method to those obtained after a traditional treatment based on acid digestion in a microwave oven, and no significant differences were observed (except for grape juice).

The accuracy of the method was assessed through a recovery test, which provided recovery percentages in the range of 81–117%.

Precision was always better than 8%, and the limits of quantification for Cu and Mn were 6 μg L−1 and 9 μg L−1, respectively.

We analyzed twenty-two samples, and the concentrations of Cu and Mn were in the range of 24.1–321 μg L−1 and 116–3296 μg L−1, respectively.

Statistical analysis using a two-way analysis of variance (ANOVA) at 95% confidence level showed that flavor and brand impacted on the concentration of the analytes in the samples.

Among the samples analyzed, the grape juice presented the highest concentrations of both Cu and Mn.

نمط استشهاد جمعية علماء النفس الأمريكية (APA)

Rocha, Pamela S. M.& Cruz, Graziela F. B.& Cassella, Ricardo J.. 2020. Evaluation of Copper and Manganese Concentrations in Commercial Fruit Juices and Nectars Consumed in Brazil by GF AAS. Journal of Analytical Methods in Chemistry،Vol. 2020, no. 2020, pp.1-10.
https://search.emarefa.net/detail/BIM-1174900

نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)

Rocha, Pamela S. M.…[et al.]. Evaluation of Copper and Manganese Concentrations in Commercial Fruit Juices and Nectars Consumed in Brazil by GF AAS. Journal of Analytical Methods in Chemistry No. 2020 (2020), pp.1-10.
https://search.emarefa.net/detail/BIM-1174900

نمط استشهاد الجمعية الطبية الأمريكية (AMA)

Rocha, Pamela S. M.& Cruz, Graziela F. B.& Cassella, Ricardo J.. Evaluation of Copper and Manganese Concentrations in Commercial Fruit Juices and Nectars Consumed in Brazil by GF AAS. Journal of Analytical Methods in Chemistry. 2020. Vol. 2020, no. 2020, pp.1-10.
https://search.emarefa.net/detail/BIM-1174900

نوع البيانات

مقالات

لغة النص

الإنجليزية

الملاحظات

Includes bibliographical references

رقم السجل

BIM-1174900