Feasibility of a Nano‐Carbon Black Paste Electrode for Simultaneous Voltammetric Determination of Antioxidants in Food Samples and Biodiesel in the Presence of Surfactant,Electroanalysis

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Feasibility of a Nano‐Carbon Black Paste Electrode for Simultaneous Voltammetric Determination of Antioxidants in Food Samples and Biodiesel in the Presence of Surfactant
Electroanalysis ( IF 2.7 ) Pub Date : 2020-01-14 , DOI: 10.1002/elan.201900479
Pedro Nunes Angelis ₁ , Jhessica Cássia Mendonça ₁ , Luana Rianne da Rocha ₁ , Tainara Boareto Capelari ₁ , Maiyara Carolyne Prete ₁ , Mariana Gava Segatelli ₁ , Dionisio Borsato ₁ , César Ricardo Teixeira Tarley _{1,

2}

Affiliation

In this work, a simple and low‐cost method was developed for the simultaneous determination of the antioxidants tert‐butylhydroquinone (TBHQ) and butylated hydroxyanisole (BHA) in the presence of the cationic surfactant CPB by square wave voltammetry (SWV) technique using a carbon black paste electrode (CBPE). The performance of the method was investigated by varying parameters such as pH, electrolyte, and type and concentration of surfactant. Under the optimum conditions of 0.2 mol L⁻¹ phosphate buffer (pH 7.0), 600.0 μmol L⁻¹ of cetylpyridinium bromide surfactant and SWV operating parameters optimized through the Doehlert matrix, the method presented low limits of quantification for TBHQ and BHA (0.23 and 0.26 μmol L⁻¹, respectively) and high precision in successive measurements. The proposed method was applied in mayonnaise, margarine and biodiesel and the accuracy of method was checked by the HPLC technique.

中文翻译：

表面活性剂存在下纳米碳黑糊状电极同时伏安法测定食品样品和生物柴油中抗氧化剂的可行性

在这项工作中，开发了一种简单且低成本的方法，可通过方波伏安法（SWV）使用阳离子表面活性剂CPB在存在阳离子表面活性剂CPB的同时测定抗氧化剂叔丁基对苯二酚（TBHQ）和丁基化羟基茴香醚（BHA）。炭黑糊状电极（CBPE）。通过改变参数（例如pH，电解质，表面活性剂的类型和浓度）来研究该方法的性能。在通过Doehlert基质优化的0.2 mol L ^-1磷酸盐缓冲液（pH 7.0），600.0μmolL ^-1十六烷基溴化吡啶表面活性剂和SWV操作参数的最佳条件下，该方法对TBHQ和BHA的定量限较低（0.23和0.26微摩尔L ^-1）和连续测量中的高精度。将该方法应用于蛋黄酱，人造黄油和生物柴油中，并通过HPLC技术检查了方法的准确性。

更新日期：2020-01-14

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