Assessment of p-aminophenol oxidation by simulating the process of hair dyeing and occurrence in hair salon wastewater and drinking water from treatment plant

Autor(es)

de Souza, Joao Carlos ^[1] ; da Silva, Bianca Ferreira ^[1] ; Morales, Daniel Alexandre ^[2] ; Umbuzeiro, Gisela de Aragao ^[2] ; Boldrin Zanoni, Maria Valnice ^[1]

Afiliação do(s) autor(es)

^[1] Sao Paulo State Univ UNESP, Dept Analyt Chem, Natl Inst Alternat Technol Detect Toxicol Evaluat, Inst Chem, Rua Prof Francisco Degni 55, BR-14800060 Araraquara, SP - Brazil

^[2] State Univ Campinas UNICAMP, Fac Technol, Rua Paschoal Marmo 1888, BR-13484332 Limeira, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF HAZARDOUS MATERIALS; v. 387, APR 5 2020.
• Citações Web of Science: 2

Resumo

This work reports the study of oxidation reaction of p-aminophenol (PAP) in ammoniacal medium in dissolved atmospheric oxygen and hydrogen peroxide, simulating the process of hair dyeing with permanent dyes. The products formed, which included semi-quinoneimine radical, quinoneimine, dimers, trimers and tetramers, were identified by mass spectrometry, infrared spectroscopy, UV-vis spectrophotometry, and nuclear magnetic resonance of hydrogen. The process was found to involve an autoxidation mechanism. The mutagenicity of the products was carried out by Salmonella Typhimurium YG1041 assay, and the results indicated no mutagenic properties. The presence of PAP and its oxidative products in samples of wastewater collected from hairdressing salon effluent (WW), raw river water (RRW), and water inlet and outlet of drinking water treatment plant (DWTP) was analyzed by HPLC-DAD. PAP was detected in the collected samples of WW, water samples from DWTP (before and after treatment), at concentrations of 2.1 +/- 0.5 mg L-1, 1.9 +/- 0.3 x 10(13) mg L-1 and 1.3 +/- 0.2 x 10(-3) mg L-1, respectively. The reaction products, including dimers, trimers and tetramers were identified only in the WW sample; this shows that both the precursor in the sample and its derivatives were released into the wastewater. (AU)

• Processo FAPESP: 14/50945-4 - INCT 2014: Instituto Nacional de Tecnologias Alternativas para Detecção, Avaliação Toxicológica e Remoção de Micropoluentes e Radioativos
• Beneficiário: Maria Valnice Boldrin
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 15/18109-4 - Contribuição dos Materiais Nanoestruturados na Eletroanálise de Fármacos e Corantes, na Oxidação e Redução Fotoeletrocatalítica de Poluentes Orgânicos e Inorgânicos e Desinfecção de Água
• Beneficiário: Maria Valnice Boldrin
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 15/12998-1 - Métodos cromatográficos e eletroanalíticos aplicados na determinação de p-toluenodiamina e p-aminofenol em meio oxidativo usados em tintura permanente de cabelos.
• Beneficiário: João Carlos de Souza
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 08/10449-7 - Avaliação da ocorrência, toxicidade/genotoxicidade e processos para degradação de corantes em efluentes e águas superficiais
• Beneficiário: Maria Valnice Boldrin
• Modalidade de apoio: Auxílio à Pesquisa - Temático