title: Voltammetric Determination of Dinonyl Diphenylamine and Butylated Hydroxytoluene in Mineral and Synthetic Oil.
abstract: A method is reported for the determination of diphenylamine and butylated hydroxytoluene in mineral and synthetic oil. The procedure used differential pulse voltammetry with a glassy carbon electrode. This method was then used for determining these antioxidants in supporting electrolyte consisting of dilute sulfuric acid and sodium dodecyl sulfonate in ethanol. Anodic peaks were obtained for both analytes. Oxidation peaks at 250 mV were observed from a mixture of butylated hydroxytoluene and dinonyl diphenylamine, allowing their simultaneous determination. This approach was successfully used for the determination of dinonyl diphenylamine and butylated hydroxytoluene in fortified mineral and synthetic oils with good accuracy and precision.
authors.affiliation: Wuhan Research Institute of Materials Protection, State Key Laboratory of Special Surface Protection Materials and Application Technology , Wuhan , Hubei , China.
authors.forename: Yaling
authors.initials: Y
authors.lastname: Xiang
authors.affiliation: Wuhan Research Institute of Materials Protection, State Key Laboratory of Special Surface Protection Materials and Application Technology , Wuhan , Hubei , China.
authors.forename: Xuzheng
authors.initials: X
authors.lastname: Qian
authors.affiliation: MBE Department, City University of Hong Kong , Kowloon , Hong Kong.
authors.forename: Meng
authors.initials: M
authors.lastname: Hua
authors.affiliation: Wuhan Research Institute of Materials Protection, State Key Laboratory of Special Surface Protection Materials and Application Technology , Wuhan , Hubei , China.
authors.forename: Bingxue
authors.initials: B
authors.lastname: Cheng
authors.affiliation: Wuhan Research Institute of Materials Protection, State Key Laboratory of Special Surface Protection Materials and Application Technology , Wuhan , Hubei , China.
authors.forename: Wu
authors.initials: W
authors.lastname: Chen
authors.affiliation: Wuhan Research Institute of Materials Protection, State Key Laboratory of Special Surface Protection Materials and Application Technology , Wuhan , Hubei , China.
authors.forename: Jian
authors.initials: J
authors.lastname: Li
keywords: Butylated hydroxytoluene; differential pulse voltammetry; dinonyl diphenylamine; glassy carbon electrode; mineral and synthetic oil