New benzotriazoles generated during textile dyeing process: Synthesis, hazard, water occurrence and aquatic risk assessment

Autor(es)

Vendemiatti, Josiane A. Souza ^[1] ; Camparotto, Natalia G. ^[1] ; Vidal, Cristiane ^[2] ; Cristale, Joyce ^[1] ; Agapito, Estevao Vieira de Moraes ^[1] ; Oliveira, Adria Calotto ^[1] ; Rodrigues, Everton A. ^[1] ; Montagner, Cassiana C. ^[2] ; Umbuzeiro, Gisela A. ^{[3, 1, 4]} ; Prediger, Patricia ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Campinas, Sch Technol, Limeira, SP - Brazil

^[2] Univ Estadual Campinas, Inst Chem, Campinas, SP - Brazil

^[3] Univ Estadual Campinas, Inst Biol, Campinas, SP - Brazil

^[4] North Carolina State Univ, Wilson Coll Text, Raleigh, NC 27695 - USA

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF HAZARDOUS MATERIALS; v. 403, FEB 5 2021.
• Citações Web of Science: 4

Resumo

Phenylbenzotriazoles (PBTA) can be generated unintentionally during textile dyeing factories by reduction of dinitrophenylazo dyes and their subsequent chlorination in disinfection process. Eight non-chlorinated PBTAs (non-Cl PBTA) and their related chlorinated PBTAs have been found in rivers and presented mutagenic activity. No data on their aquatic toxicity are available. In this work, two new phenylbenzotriazoles, non-Cl PBTA-9 and PBTA-9, derived from the dye C.I. Disperse Violet 93 (DV93) were synthesized and chemically/toxicologically characterized. Both compounds were more mutagenic than the parental dye in the Salmonella/microsome assay in the presence of metabolic activation (S9). Mutagenicity studies in vivo with mammals would confirm their potential hazard to humans. The two compounds were acutely toxic to Daphnia similis. We developed an analytical method to simultaneously quantify non-Cl PBTA-9, PBTA-9 and DV93 in river waters. Non-Cl PBTA-9 was found in sites under influence of textile effluents but at concentrations that do not pose risk to the aquatic life according to the P-PNEC calculated based on the acute toxicity tests. PBTA-9 was not detected in any samples analyzed. More studies on the aquatic toxicity and water occurrence of PBTAs should be conducted to verify the relevance of this class of compounds as aquatic contaminants. (AU)

• Processo FAPESP: 19/07822-2 - Síntese de novos nanoadsorventes, suas caracterizações e aplicações na adsorção de poluentes em águas
• Beneficiário: Patricia Prediger
• Modalidade de apoio: Auxílio à Pesquisa - Regular