| PSS功能化海绵状石墨烯电化学传感灵敏检测瑞香素的研究 |
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| 基金项目:河南省高等学校重点科研项目(20A150008)；河南省科技攻关项目(182102310615)；郑州师范学院环境催化创新团队(802010) |
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| 中文摘要:通过绿色环保、简单易行的方法合成聚苯乙烯磺酸钠(PSS)功能化的海绵状石墨烯(3D-PSS-rGO)，利用紫外-可见吸收光谱及扫描电镜对复合材料进行表征和分析,构筑了基于3D-PSS-rGO复合材料修饰玻碳电极检测瑞香素的电化学传感器。结果表明，3D-PSS-rGO/GCE对瑞香素有较强富集作用，对瑞香素表现出优异的电催化活性。在优化实验条件下，瑞香素浓度在0.08~10.0 μmol/L和10.0~60.0 μmol/L范围内与其氧化峰电流呈良好的线性关系，检出限(S/N=3)为0.04 μmol/L。将该传感用于祖师麻粉中瑞香素含量的检测，回收率为90.0%~96.0%。该研究为中药材中瑞香素含量的测定提供了方法参考。 |
| 中文关键词:聚苯乙烯磺酸钠(PSS) 石墨烯 瑞香素 传感 |
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| Research on Sensitive Determination of Daphnetin Using an Electrochemical Sensor Based on PSS Functionalized Spongy Graphene |
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| Abstract:The poly(sodium 4-styrenesulfonate) functionalized spong graphene(3D-PSS-rGO) composites were fabricated via a green and simple method.The as made composites were characterized and analyzed by ultraviolet and visible absorption spectroscopy and scanning electron microscopy.An electrochemical sensor was constructed for the detection of daphnetin based on 3D-PSS-rGO composite film modified glassy carbon electrode(3D-PSS-rGO/GCE).Results showed that the 3D-PSS-rGO/GCE exhibited a strong enrichment effect and an excellent electrocatalytic activity towards daphnetin.Under the optimized conditions,good linear relationships were observed between oxidation peak current and daphnetin concentration in the ranges of 0.08-10.0 μmol/L and 10.0-60.0 μmol/L,with a detection limit of 0.04 μmol/L.The sensor was used in the determination of daphnetin content in girald daphne bark,with recoveries of 90.0%-96.0%.This study provides a reference for the determination of daphnetin in medicinal herbs. |
| Key Words:poly(sodium 4-styrenesulfonate)(PSS) graphene daphnetin sensor |
| 引用本文：王玲，杨心悦，刘珂，陈明晰，徐新花.PSS功能化海绵状石墨烯电化学传感灵敏检测瑞香素的研究[J].分析测试学报,2020,39(8):1012-1017. |
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