Buscar
Mostrando ítems 1-10 de 11
Assessment of several advanced oxidation processes applied in the treatment of environmental concern constituents from a real hair dye wastewater
(2018-04-01)
Currently, little information is available regarding the presence of compounds from raw hair dyeing wastewater. It is known that the most commonly commercial formulations contain components with toxic properties and some ...
Assessment of semi-permanent hair dyes in wash water from beauty salons by liquid chromatography-tandem mass spectrometry-selected reaction monitoring (LC-MS/MS-SRM)
(2020-11-28)
Herein, we present an approach for the analytical determination and quantification of semi-permanent hair dyes in wash water samples released during washing of dyed hair employing a liquid chromatography-tandem mass ...
Assessment of the compounds formed by oxidative reaction between p-toluenediamine and p-aminophenol in hair dyeing processes: Detection, mutagenic and toxicological properties
(2021-11-15)
Previous studies have demonstrated the presence of precursors and coupling agents in wastewater from hair dyeing processes. The complex reaction involved in the oxidation of these compounds can generate extremely hazardous ...
Assessment of the autoxidation mechanism of p-toluenediamine by air and hydrogen peroxide and determination of mutagenic environmental contaminant in beauty salon effluent
(2019-10-01)
The present work investigated the autoxidation reaction of p-toluenediamine (PTD) - a precursor - widely used in permanent hair dyeing formulation, under experimental conditions close to the hair dyeing process (oxygen ...
Determinação eletroanalítica de corantes de cabelos temporários em água, tintura comercial e fio de cabelo usando eletrodo compósito e partículas magnéticas modificadas com carbolixatos
(Universidade Estadual Paulista (Unesp), 2017-08-17)
Corantes de cabelo, provenientes principalmente da tintura comercial de cabelo em salões de beleza, quando não convenientemente descartados, podem gerar efluentes de difícil tratamento. Além disso, a análise de corante de ...
Desenvolvimento de métodos para determinação de chumbo e níquel em produtos cosméticos e cabelo por GF AAS
(Universidade Federal de Minas GeraisUFMG, 2012-09-14)
The world market of cosmetics and perfumes billions of dollars a year and every time new products are available to the consumer. It is therefore very important to ensure the quality and safety of such products. Thus the ...
Desenvolvimento de sensores descartáveis de ouro nanoestruturado modificados com complexo metálico visando detecção in situ de corantes semipermanentes de cabelo
(Universidade Estadual Paulista (Unesp), 2014-09-26)
Ao longo do tempo, o uso exagerado de corantes de cabelo, em forma geral, tem apresentado um grande crescimento, e dessa forma os compostos utilizados nessas formulações comerciais tem apresentado interesse, devido a que ...
Desenvolvimento de sensores descartáveis de ouro nanoestruturado modificados com complexo metálico visando detecção in situ de corantes semipermanentes de cabelo
(Universidade Estadual Paulista (UNESP), 2015)
Desenvolvimento de sensores descartáveis de ouro nanoestruturado modificados com complexo metálico visando detecção in situ de corantes semipermanentes de cabelo
(Universidade Estadual Paulista (Unesp), 2015)