【作者】 高森； 邱素艳； 刘启达； 林振宇； 邱彬； 陈国南；

【Author】 Sen Gao;Suyan Qiu;Qida Liu;Zhenyu Lin;Bin Qiu;Guonan Chen;MOE Key Laboratory of Analysis and Detection for Food Safety, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, Department of Chemistry, Fuzhou University;MOE Key Laboratory for Strength and Vibration, Xi’an Jiaotong University;

【机构】 食品安全分析与检测教育部重点实验室,福建省食品安全分析与检测重点实验室,福州大学化学系； 强度与振动教育部重点实验室,西安交通大学；

【摘要】 <正>Cu是人体内不可缺少的第三大微量元素,仅次于Fe与Zn。但是,过多的Cu会引起咳嗽,恶心,腹泻,甚至引起肝功能和肾功能紊乱等副作用。因此Cu的检测是至关重要的。通常检测Cu的方法有原子吸收光谱法,X-射线荧光光谱法以及电化学检测等等,但是这些方法中,有的方法成本高,仪器昂贵,操作复杂,有的方法选择性不好,需要复杂的实际样品预处理过程,这就有必要寻求简更多还原

【Abstract】 Novel ultra-high sensitive and selective electrochemical sensor for Cu(Ⅱ) detection is developed by the modification of Ferrocene(Fc) on Au electrode through Cu(Ⅰ) catalyzed alkyne-azide cycloaddition reaction(Cu AAC). The catalyst of Cu(Ⅰ) species is derived from the electrolytic reduction of Cu(Ⅱ) via Bulk Electrolysis with coulometry(BE) technique. It is found that the Differential Pulse Voltammetry(DPV) current detected from the electrode surface has a linear relationship with the logarithm of Cu(Ⅱ) concentration in the range of 1.0×10-14~1.0×10-9 mol/L and a low detection limit of 3.4×10-15 mol/L can be achieved. It is also demonstrated that the proposed sensor has good selectivity to Cu(Ⅱ) in the presence of other common metal ions, and the proposed method has been applied to determine Cu(Ⅱ) in real samples(yoghurt) with satisfactory results.更多还原