检出限
石墨烯
微分脉冲伏安法
电化学气体传感器
六氯苯
吸附
电极
电化学
线性范围
支撑电解质
化学
材料科学
无机化学
分析化学(期刊)
循环伏安法
纳米技术
色谱法
有机化学
物理化学
污染物
作者
Guangxia Yu,Weina Zhang,Qiang Zhao,Weixiang Wu,Xiaoyun Wei,Qing Lü
标识
DOI:10.1016/j.snb.2016.05.072
摘要
Reduction of hexachlorobenzene (HCB) on the surface of nitrogen–doped graphene (NG) and chitosan modified glassy carbon electrode is sensitive in deaerated organic electrolyte solutions using differential pulse voltammetry (DPV). Under optimized conditions, the modified electrode achieved good sensing performances for the detection of HCB, with a wide linear range from 3 μg/L to 10 mg/L, and a low detection limit of 1.72 μg/L. The HCB sensor is constructed by using a layer–by–layer assembly technique. In this sensor, NG not only provides electrocatalytic activity for the reduction of HCB, but also shows good adsorption affinity to HCB, which enhances the sensitivity of sensor. The sensor has been successfully utilized for detection of HCB in practical water samples, providing a promising alternative for the environmental monitoring.
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