Determination of As, Cd, Cr, Cu, Pb and Zn in black teas (Camellia sinensis L.) sold in supermarkets in Campos dos Goytacazes, Brazil

Authors

DOI:

https://doi.org/10.19180/1809-2667.v25n22023.19110

Keywords:

Camellia sinensis L, black tea, potentially toxic elements, micronutrients, ICP OES

Abstract

Camellia sinensis L. is a small tree in the Theaceae family. From its leaves is produced a tea, which is the second most consumed non-alcoholic beverage in the world. The tea of this plant can bring several health benefits, however, some elements present in the leaves of Camellia sinensis L. are potentially toxic, for example, As, Cd and Pb; since they are among the ten chemical substances of major health risks. Thus, the objective of this work was to determine the concentrations of As, Cd, Cr, Cu, Pb and Zn by inductively coupled plasma optical emission spectrometry (ICP OES) after acid digestion of commercial samples of black tea from the plant Camellia sinensis L. acquired in supermarkets from Campos dos Goytacazes (Brazil). The detection limits for the elements were 0.5 mg kg−1 for As; 0.003 mg kg−1 for Cd; 0.02 mg kg−1 for Cr; 1.2 mg kg−1 for Cu; 0.09 mg kg−1 for Pb and 0.04 mg kg−1 for Zn. The concentrations found of the potentially toxic elements Cd and Pb in the black teas of Camellia sinensis L. are below the concentrations established by ANVISA (0.60 mg kg−1 and 0.40 mg kg−1, respectively).

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Author Biographies

  • Hellen Gonçalves Vieira
    Mestrado em andamento na área de Ciências Ambientais pelo Programa de Pós-Graduação em Ciências Naturais na Universidade Estadual do Norte Fluminense Darcy Ribeiro (UENF) com bolsa UENF/FAPERJ - Campos dos Goytacazes/RJ - Brasil. E-mail: hellen.vieira.1984@gmail.com.
  • Henrique Jordem Venial, Universidade Federal do Espírito Santo, Alegre/ES
    Doutor em Ciência Animal na área de Sanidade Animal pela Universidade Estadual do Norte Fluminense (UENF). Técnico em Anatomia e Necropsia (Medicina Veterinária) na Universidade Federal do Espírito Santo - Alegre/ES - Brasil. E-mail: henriquevenial@hotmail.com.
  • Francisco Luan Fonsêca Silva, Universidade Estadual do Ceará (UECE), Crateús/CE
    Doutor em Química Analítica (2022) pela Universidade Federal do Ceará (UFC). Professor Adjunto na Faculdade de Educação de Crateús (FAEC), Universidade Estadual do Ceará (UECE) - Crateús/CE - Brasil  E-mail: fluan.fonseca@gmail.com.
  • Gisele Simone Lopes, Universidade Federal do Ceará (UFC), Fortaleza/CE
    Doutora em Química (2002) pela Universidade Federal de São Carlos (UFSCar) e Pós-doutorado em Química Analítica no Metrology Group (Measurement Science and Standards) do National Research Council Canada (NRC) em Ottawa (2014). Professora Titular do Departamento de Química Analítica e Físico-Química da Universidade Federal do Ceará (UFC) - Fortaleza/CE - Brasil. E-mail: gslopes@ufc.br.
  • Wladiana Oliveira Matos, Universidade Federal do Ceará, Fortaleza/CE
    Doutora em Química Analítica (2011) pela Universidade Federal de São Carlos (UFSCar). Professora Associada I na Universidade Federal do Ceará na área de Química Analítica - Fortaleza/CE - Brasil. E-mail: wladianamatos@ufc.br.
  • Cibele Maria Stivanin de Almeida, Universidade Estadual do Norte Fluminense Darcy Ribeiro (UENF), Campos dos Goytacazes/RJ
    Doutora em Química (Química Analítica Inorgânica) pela Pontifícia Universidade Católica do Rio de Janeiro (2012). Professora Associada na Universidade Estadual do Norte Fluminense Darcy Ribeiro (UENF) - Campos dos Goytacazes/RJ - Brasil. E-mail: cibele.uenf@gmail.com.
  • Murilo de Oliveira Souza, Instituto Federal de Educação, Ciência e Tecnologia Fluminense (IFF) Campus Itaperuna/RJ
    Doutor em Ciências Naturais na Universidade Estadual do Norte Fluminense (2021). Professor do Instituto Federal de Educação, Ciência e Tecnologia Fluminense (IFF) Campus Itaperuna/RJ - Brasil. E-mail: m.quimic@gmail.com.

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Vértices volume 25 issue 2 2023 e-issn 1809-2667

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Published

11-08-2023

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Vol. 25 No. 2 (2023): May/Aug.

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Original articles

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Copyright (c) 2023 Hellen Gonçalves Vieira, Henrique Jordem Venial, Francisco Luan Fonsêca da Silva, Gisele Simone Lopes, Wladiana Oliveira Matos, Cibele Maria Stivanin de Almeida, Murilo de Oliveira Souza

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How to Cite

VIEIRA, Hellen Gonçalves; VENIAL, Henrique Jordem; SILVA, Francisco Luan Fonsêca; LOPES, Gisele Simone; MATOS, Wladiana Oliveira; ALMEIDA, Cibele Maria Stivanin; SOUZA, Murilo Oliveira. Determination of As, Cd, Cr, Cu, Pb and Zn in black teas (Camellia sinensis L.) sold in supermarkets in Campos dos Goytacazes, Brazil. Revista Vértices, [S. l.], v. 25, n. 2, p. e25219110, 2023. DOI: 10.19180/1809-2667.v25n22023.19110. Disponível em: https://editoraessentia.iff.edu.br/index.php/vertices/article/view/19110.. Acesso em: 21 nov. 2024.
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