CAJ | 학술논문

重金属是一种危险的污染物,往往长期积累在生物体内不可降解,在极其微量的情况下也会对各种生态系统产生不同程度的危害.文中采用汞膜玻碳圆盘电极,研制了一种用于监测水环境痕量重金属浓度的电化学传感器,基于差分脉冲阳极溶出伏安法(differential pulse anode stripping voltammetry,DPASV),实现了锌、镉、铅和铜4种元素的同时测定.结果表明:该传感器用于检测锌、镉、铅和铜的检出限分别为2.0 μg/L、1.9 μg/L、0.8 μg/L和0.7 μg/L.与其他重金属检测方法相比,该电化学传感器的特点是可同时快速检测多种重金属元素,传感器体积小,价格低,操作简单,灵敏度高,易于实现现场自动检测分析.
중금속시일충위험적오염물,왕왕장기적루재생물체내불가강해,재겁기미량적정황하야회대각충생태계통산생불동정도적위해.문중채용홍막파탄원반전겁,연제료일충용우감측수배경흔량중금속농도적전화학전감기,기우차분맥충양겁용출복안법(differential pulse anode stripping voltammetry,DPASV),실현료자、력、연화동4충원소적동시측정.결과표명:해전감기용우검측자、력、연화동적검출한분별위2.0 μg/L、1.9 μg/L、0.8 μg/L화0.7 μg/L.여기타중금속검측방법상비,해전화학전감기적특점시가동시쾌속검측다충중금속원소,전감기체적소,개격저,조작간단,령민도고,역우실현현장자동검측분석.
Heavy metals are one class of insidious contaminants that can do harm to the whole ecological systems to various extents even if they are present in extremely minute quantities,that is because their nonbiodegradable nature and ability to persist for long periods. This paper fabricated an electrochemical sensor for simultaneously detection of Zn(Ⅱ),Cd(Ⅱ),Pb(Ⅱ) and Cu(Ⅱ) in aqueous solutions based on the Hg-plated glass carbon disk electrode.Tests performing with differential pulse anode stripping voltammetry (DPASV) showed their detection limits were 2.0 μg/L,1.9 μg/L,0.8 μg/L and 0.7 μg/L,respectively. In comparison with other heavy metals detection methods,the electrochemical sensor can detect multi-element heavy metals simultaneously with higher detection speed,lower cost,little space,and it's easier to operate and can implement in-situ auto analysis.