@Article{SilvaQuiZanCorFat:2023:AmFlIn,
               author = "Silva, Tiago Almeida and Quint{\~a}o, Herlon Charlles Moura and 
                         Zanin, Hudson and Corat, Evaldo Jos{\'e} and Fatibello-Filho, 
                         Orlando",
          affiliation = "{Universidade Federal de Vi{\c{c}}osa (UFV)} and {Centro Federal 
                         de Educa{\c{c}}{\~a}o Tecnol{\'o}gica de Minas Gerais (CEFET)} 
                         and {Universidade Estadual de Campinas (UNICAMP)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {Universidade Federal 
                         de S{\~a}o Carlos (UFSCar)}",
                title = "Amperometric flow injection analysis of hydroquinone in 
                         dermatological creams using a porous diamond-like carbon 
                         electrode",
              journal = "Diamond and Related Materials",
                 year = "2023",
               volume = "139",
                pages = "e110367",
                month = "Nov.",
             keywords = "Carbon nanotube forest, Dermatologic samples, Diamond-like carbon, 
                         Flow injection analysis, Hydroquinone.",
             abstract = "A porous diamond-like carbon film deposited on vertically aligned 
                         multi-walled carbon nanotubes (DLC:VAMWCNT) was evaluated as an 
                         electrode material in flow injection analysis (FIA) with 
                         amperometric detection. The redox behavior of hydroquinone (H2Q) 
                         was carried out as proof of concept. From cyclic voltammetry 
                         tests, H2Q gave a heterogeneous electron transfer rate constant 
                         (k0) of 4.9 × 10\−3 cm s\−1, which is comparable or 
                         better than those obtained with conventional electrodes. For the 
                         H2Q determination with the FIA-amperometry system, optimizations 
                         were performed regarding the supporting electrolyte, applied 
                         potential and FIA parameters (flow rate and sample injection 
                         volume). Under optimal conditions, the amperometric response of 
                         the DLC:VAMWCNT electrode was linear in the H2Q concentration 
                         range from 1.0 × 10\−6 to 1.0 × 10\−4 mol 
                         L\−1, with a limit of detection (LOD) of 7.7 × 10\−7 
                         mol L\−1. Interestingly, the DLC:VAMWCNT electrode 
                         displayed a very stable response under hydrodynamic conditions, 
                         with no memory effect while retaining accuracy towards the 
                         analysis of commercial H2Q-based dermatological creams. From these 
                         findings, DLC:VAMWCNT appears to be an outstanding candidate for 
                         flow injection analysis systems coupled to electrochemical 
                         detection.",
                  doi = "10.1016/j.diamond.2023.110367",
                  url = "http://dx.doi.org/10.1016/j.diamond.2023.110367",
                 issn = "0925-9635",
             language = "en",
           targetfile = "1-s2.0-S0925963523006921-main.pdf",
        urlaccessdate = "30 abr. 2024"
}