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Cellulose fabricated pencil graphite sensor for the quantification of hazardous herbicide atrazine
Diamond and Related Materials ( IF 4.3 ) Pub Date : 2020-05-01 , DOI: 10.1016/j.diamond.2020.107788
Annu , Swati Sharma , Antony Nitin , Rajeev Jain

Abstract Electrochemical behavior of Atrazine (ATZ) was investigated at Cellulose (CLs) fabricated Pencil Graphite Electrode (CLs/PGE) novel sensor in Britton-Robinson buffer at pH 4.3. The developed sensor was characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR), X-Ray diffraction (XRD) and electrochemical impedance spectroscopy (EIS). The electrochemical measurements were carried out using square wave (SW) and cyclic voltammetry (CV). The modified sensor exhibited an excellent catalytic response towards the reduction of ATZ with a well-defined reduction peak at 880 mV. The modified sensor exhibited linear calibration curve for ATZ over a concentration range of 5.0 ng/mL to 320 ng/mL with detection limit of 0.008 ng/mL. The developed sensor could detect ATZ efficiently without any interference from the common metabolites. The voltammetric procedure was applied successfully to real samples analysis with high sensitivity, good selectivity and reproducibility which make it suitable for other environmental sample analyses. The fabricated sensor demonstrated an excellent performance for quantification of ATZ with accuracy of 3.00% relative standard deviation (RSD). The suggested technique has been effectively applied for ATZ detection in drinking water with a recovery from 98.8% to 99.1%. For the first time cellulose based pencil graphite novel sensor has been developed for the voltammetric quantification of herbicide ATZ with higher sensitivity.

中文翻译:

用于量化有害除草剂莠去津的纤维素制造的铅笔石墨传感器

摘要 在 pH 4.3 的 Britton-Robinson 缓冲液中,用纤维素 (CLs) 制造的铅笔石墨电极 (CLs/PGE) 新型传感器研究了莠去津 (ATZ) 的电化学行为。开发的传感器通过扫描电子显微镜 (SEM)、透射电子显微镜 (TEM)、傅里叶变换红外光谱 (FTIR)、X 射线衍射 (XRD) 和电化学阻抗谱 (EIS) 进行表征。使用方波 (SW) 和循环伏安法 (CV) 进行电化学测量。改进后的传感器对 ATZ 的还原表现出出色的催化响应,在 880 mV 处具有明确的还原峰。改进的传感器在 5.0 ng/mL 至 320 ng/mL 的浓度范围内对 ATZ 表现出线性校准曲线,检测限为 0.008 ng/mL。开发的传感器可以有效地检测 ATZ,而不受常见代谢物的干扰。伏安法成功地应用于实际样品分析,具有高灵敏度、良好的选择性和重现性,使其适用于其他环境样品分析。制造的传感器表现出优异的 ATZ 定量性能,精度为 3.00% 相对标准偏差 (RSD)。建议的技术已有效应用于饮用水中的 ATZ 检测,回收率为 98.8% 至 99.1%。首次开发了基于纤维素的铅笔石墨新型传感器,用于以更高的灵敏度对除草剂 ATZ 进行伏安定量。伏安法成功地应用于实际样品分析,具有高灵敏度、良好的选择性和重现性,使其适用于其他环境样品分析。制造的传感器表现出优异的 ATZ 定量性能,精度为 3.00% 相对标准偏差 (RSD)。建议的技术已有效应用于饮用水中的 ATZ 检测,回收率为 98.8% 至 99.1%。首次开发了基于纤维素的铅笔石墨新型传感器,用于以更高的灵敏度对除草剂 ATZ 进行伏安定量。伏安法成功地应用于实际样品分析,具有高灵敏度、良好的选择性和重现性,使其适用于其他环境样品分析。制造的传感器表现出优异的 ATZ 定量性能,精度为 3.00% 相对标准偏差 (RSD)。建议的技术已有效应用于饮用水中的 ATZ 检测,回收率从 98.8% 到 99.1%。首次开发了基于纤维素的铅笔石墨新型传感器,用于以更高的灵敏度对除草剂 ATZ 进行伏安定量。制造的传感器表现出优异的 ATZ 定量性能,精度为 3.00% 相对标准偏差 (RSD)。建议的技术已有效应用于饮用水中的 ATZ 检测,回收率从 98.8% 到 99.1%。首次开发了基于纤维素的铅笔石墨新型传感器,用于以更高的灵敏度对除草剂 ATZ 进行伏安定量。制造的传感器表现出优异的 ATZ 定量性能,精度为 3.00% 相对标准偏差 (RSD)。建议的技术已有效应用于饮用水中的 ATZ 检测,回收率为 98.8% 至 99.1%。首次开发了基于纤维素的铅笔石墨新型传感器,用于以更高的灵敏度对除草剂 ATZ 进行伏安定量。
更新日期:2020-05-01
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