Graphene-Based Nanomaterials in Soil: Ecotoxicity Assessment Using Enchytraeus crypticus Reduced Full Life Cycle

Autor(es)

Mendonca, Monique C. P. ^{[1, 2]} ; Rodrigues, Natalia P. ^[2] ; de Jesus, Marcelo B. ^[1] ; Amorim, Monica J. B. ^[2]

Afiliação do(s) autor(es)

^[1] Univ Estadual Campinas, Inst Biol, Dept Biochem & Tissue Biol, BR-13083970 Campinas, SP - Brazil

^[2] Univ Aveiro, Dept Biol, CESAM, P-3810193 Aveiro - Portugal

• Tipo de documento: Artigo Científico
• Fonte: NANOMATERIALS; v. 9, n. 6 JUN 2019.
• Citações Web of Science: 1

Resumo

Graphene-based nanomaterials (GBNs) possess unique physicochemical properties, allowing a wide range of applications in physical, chemical, and biomedical fields. Although GBNs are broadly used, information about their adverse effects on ecosystem health, especially in the terrestrial environment, is limited. Therefore, this study aims to assess the toxicity of two commonly used derivatives of GBNs, graphene oxide (GO) and reduced graphene oxide (rGO), in the soil invertebrate Enchytraeus crypticus using a reduced full life cycle test. At higher exposure concentrations, GO induced high mortality and severe impairment in the reproduction rate, while rGO showed little adverse effect up to 1000 mg/kg. Collectively, our body of results suggests that the degree of oxidation of GO correlates with their toxic effects on E. crypticus, which argues against generalization on GBNs ecotoxicity. Identifying the key factors affecting the toxicity of GBNs, including ecotoxicity, is urgent for the design of safe GBNs for commercial purposes. (AU)

• Processo FAPESP: 14/03002-7 - Internalização e tráfego intracelular de nanopartículas: atividade biológica e perfil nanotoxicológico
• Beneficiário: Marcelo Bispo de Jesus
• Modalidade de apoio: Auxílio à Pesquisa - Jovens Pesquisadores
• Processo FAPESP: 17/18867-1 - Avaliação toxicológica de nanomateriais em espécies de invertebrados do solo
• Beneficiário: Monique Culturato Padilha Mendonça
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Pós-Doutorado