AVALIAÇÃO DE METAIS TÓXICOS DE ALFACES CULTIVADAS EM HORTA URBANA NA CIDADE DE SÃO PAULO, SÃO PAULO

Luiz Alberto Bortoletto; Erico da Silva Lima; Deborah Inês Teixeira Fávaro; João Cristiano Ulrich; Vanessa Aparecida Feijó de Souza; Marycel Elena Barboza Cotrim; Fernanda de Campos Bezerra

doi:10.5327/Z2176-947820190462

Authors

Luiz Alberto Bortoletto Centro Universitário das Faculdades Metropolitanas Unidas (FMU) http://orcid.org/0000-0002-5477-3784
Erico da Silva Lima Centro Universitário das Faculdades Metropolitanas Unidas (FMU) http://orcid.org/0000-0003-2345-9669
Deborah Inês Teixeira Fávaro IPEN http://orcid.org/0000-0002-0083-2523
João Cristiano Ulrich IPEN http://orcid.org/0000-0003-4064-0072
Vanessa Aparecida Feijó de Souza Centro Universitário das Faculdades Metropolitanas Unidas (FMU) http://orcid.org/0000-0001-5183-0360
Marycel Elena Barboza Cotrim IPEN http://orcid.org/0000-0002-6462-4758
Fernanda de Campos Bezerra Centro Universitário das Faculdades Metropolitanas Unidas (FMU) http://orcid.org/0000-0002-9947-4454

DOI:

https://doi.org/10.5327/Z2176-947820190462

Keywords:

urban farm; greenery; trace elements; human health; sustainability

Abstract

Urban gardens bring social and food benefits, but air pollutants are harmful to health. So the question arises: Are garden foods safe? To this end, this study analyzed the green-leaf lettuce, the most consumed one in the state of São Paulo and a bioindicator of toxic metals. The study was conducted from August to October 2018, in an urban garden on the roof of a large shopping mall in the city of São Paulo, surrounded by heavy vehicular traffic. Two treatments were used: open-air cultivation (T1) and cultivation in a greenhouse with air control (T2), with 9 replicates each. After 60 days, the mean concentrations of As, Cd, Cr, Pb and Zn in the samples were quantified, which did not exceed the maximum limits recommended by ANVISA. From the results of the present study, it was concluded that lettuces grown in an urban garden presented no risk to human health and the greenhouse with air control (T2) reduced the Zn content in lettuces.