Universidade Federal de São Paulo - Instituto de Ciências Ambientais, Químicas e Farmacêuticas - Campus Diadema, Professor Arthur Riedel Street, 275, 09972-270, Diadema, São Paulo, Brazil.
Universidade Federal de São Paulo - Instituto de Ciências Ambientais, Químicas e Farmacêuticas - Campus Diadema, Professor Arthur Riedel Street, 275, 09972-270, Diadema, São Paulo, Brazil.
Chemosphere. 2020 Sep;255:127013. doi: 10.1016/j.chemosphere.2020.127013. Epub 2020 May 10.
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.
为了提高农业产量，人们增加了化学物质的使用，以防止害虫的繁殖，并确保所生产的食物在储存过程中的耐久性。这些物质被称为农药，它们可能对人类健康和环境造成风险。在金属离子存在的情况下，这些物质可以相互作用，形成具有不同特性的新物种。多菌灵（MBC）就是一种有害的农药，它的结构中有氮和氧原子，可以与金属离子形成配合物。因此，在这项工作中研究了铜（II）金属离子与多菌灵及其在天然水中形成的相互作用。Cu-MBC 配合物在玻碳电极上显示出 0.007 V 的还原峰和 0.500 V 的氧化峰，具有准可逆过程的特征。通过阳极溶出伏安法，在超纯水和比林斯大坝水中铜与多菌灵的相互作用中观察到不同的行为；然而，在这两种样品中都可以观察到配合物。金属存在下的多菌灵显示出较低的氧化电位值，表明金属对农药电化学响应的影响。
