Study of the interaction Cu(II) - Carbendazim in natural waters by electrochemical techniques

Autor(es)

Santos, Aymara da Silva ^[1] ; Simoes, Fabio Ruiz ^[1] ; Codognoto, Lucia ^[1] ; Agostini Valle, Eliana Maira ^[1]

Afiliação do(s) autor(es)

^[1] Univ Fed Sao Paulo, Inst Ciencias Ambientais Quim & Farmaceut, Campus Diadema, Prof Arthur Riedel St 275, BR-09972270 Diadema, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Chemosphere; v. 255, SEP 2020.
• Citações Web of Science: 0

Resumo

In order to obtain higher agricultural yields, the use of chemical substances has been increased to prevent the proliferation of pests, as well as ensuring durability in the storage of the food produced. Such substances are known as pesticides that may well present risks to human health and the environment. In the presence of metal ions, these substances can interact forming new species with different characteristics. Carbendazim (MBC) is an example of a harmful pesticide, which has atoms of nitrogen and oxygen in its structure that can form complexes with metal ions. Thus, in this work has studied the interaction between the copper (II) metal ion and carbendazim and its formation in natural water. The Cu-MBC complex showed a reduction peak of 0.007 V and an oxidation peak of 0.500 V, with characteristics of a quasi-reversible process under a glassy carbon electrode. By anodic stripping voltammetry, a different behavior was observed in the interaction of copper and carbendazim in ultrapure water and Billings dam water; however, it was possible to observe the complex in both samples. Carbendazim in the presence of the metal shows lower oxidation potential value, indicating the influence of the metal on the electrochemical response of the pesticide. (C) 2020 Elsevier Ltd. All rights reserved. (AU)

• Processo FAPESP: 17/24235-8 - Síntese e caracterização de complexos formados entre moléculas de pesticida e íons metálicos e seus impactos no ambiente
• Beneficiário: Eliana Maira Agostini Valle Akamatu
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 17/24742-7 - Sensores baseados em compósitos de polímeros condutores e grafeno visando à determinação de substâncias desreguladoras endócrinas em ambiente marinho
• Beneficiário: Fabio Ruiz Simões
• Modalidade de apoio: Auxílio à Pesquisa - Regular