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.

中文翻译：

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矿物油和合成油中二壬基二苯胺和丁基化羟基甲苯的伏安法测定

摘要 报告了一种测定矿物油和合成油中二苯胺和丁基化羟基甲苯的方法。该过程使用具有玻璃碳电极的差分脉冲伏安法。然后使用该方法测定由稀硫酸和十二烷基磺酸钠的乙醇溶液组成的支持电解质中的这些抗氧化剂。获得两种分析物的阳极峰。从丁基化羟基甲苯和二壬基二​​苯胺的混合物中观察到 250 mV 处的氧化峰，可以同时测定它们。该方法已成功用于测定强化矿物油和合成油中的二壬基二苯胺和丁基化羟基甲苯，具有良好的准确度和精密度。