| 化学修饰电极对乙基麦芽酚的测定 |
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| 引用本文： | 汝冬冬,朱庆仁,孙登明. 化学修饰电极对乙基麦芽酚的测定[J]. 井冈山大学学报(自然科学版), 2019, 40(3): 24-30,49 |
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| 作者姓名： | 汝冬冬 朱庆仁 孙登明 |
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| 作者单位： | 淮北师范大学化学与材料科学学院,安徽,淮北 235000;淮北师范大学化学与材料科学学院,安徽,淮北 235000;淮北师范大学化学与材料科学学院,安徽,淮北 235000 |
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| 基金项目： | 安徽省高校省级自然科学研究重点项目（KJ2016A642，KJ2018A0389） |
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| 摘 要： | 通过循环伏安法将氧化石墨烯和L-谷氨酸混合液修饰在玻碳电极表面,制备了聚L-谷氨酸/石墨烯修饰电极。通过循环伏安法及差分脉冲伏安法,研究乙基麦芽酚的电化学性质。实验结果表明:最佳条件下,乙基麦芽酚分别在0.951 V和0.852 V处出现氧化峰。其浓度分别在6.00×10-6～1.00×10-4 mol/L及4.00×10-6～4.00×10-4 mol/L范围内呈现良好的线性关系,检出限为4.0×10-7 mol/L。用于检测食品中的乙基麦芽酚,结果满意。
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| 关 键 词： | 乙基麦芽酚 石墨烯 谷氨酸 食品添加剂 修饰电极 |
| 收稿时间： | 2019-01-08 |
| 修稿时间： | 2019-03-10 |
DETERMINATION OF ETHYL MALTOL BY CHEMISTRY MODIFIED ELECTRODE |
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| RU Dong-dong,ZHU Qing-ren and SUN Deng-ming. DETERMINATION OF ETHYL MALTOL BY CHEMISTRY MODIFIED ELECTRODE[J]. Journal of Jinggangshan University(Natural Sciences Edition), 2019, 40(3): 24-30,49 |
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| Authors: | RU Dong-dong ZHU Qing-ren SUN Deng-ming |
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| Affiliation: | College of Chemistry and Materials Science, Huaibei Normal University, Huaibei, Anhui 235000, China,College of Chemistry and Materials Science, Huaibei Normal University, Huaibei, Anhui 235000, China and College of Chemistry and Materials Science, Huaibei Normal University, Huaibei, Anhui 235000, China |
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| Abstract: | A poly-L-glutamic acid/graphene modified electrode was prepared in the mixture of graphene oxide and L-glutamic acid by cyclic voltammetry. The electrochemical behavior of ethyl maltol was studied by cyclic voltammetry and differential pulse voltammetry. The results showed that ethyl maltol had the oxidation peaks at 0.951 V and 0.852 V under the optimal conditions respectively. There was a good linear relationship at the concentrations from 6.00×10-6 to 1.00×10-4 mol/L and from 4.00×10-6 to 4.00×10-4 mol/L respectively. The detection limit was 4.0×10-7 mol/L. Two methods were used to detect ethyl maltol in foods with satisfactory results. |
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| Keywords: | ethyl maltol grapheme L-glutamic acid food additive modified electrode |
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