多壁碳纳米管-离子液体修饰电极同位镀铋膜测定铅离子  

Detection of lead ion using synchronous plating bismuth film on multi-walled carbon nanotube-ionic liquid modified electrode

作　　者：张英[1] 任旺[1] 李敏娇[1] 

机构地区：[1]四川理工学院化学与制药工程学院,四川自贡643000

出　　处：《化学传感器》2011年第3期62-65,共4页Chemical Sensors

基　　金：四川省教育厅基金项目(10ZB102)资助;四川理工学院科技项目(2009xjkyL001)资助

摘　　要：采用涂覆法制备多壁碳纳米管（MwCND-离子液体（[BMIM]PF6）修饰电极，然后在其表面同位镀铋膜，研究Pb“在该修饰电极上的阳极溶出伏安行为。实验结果表明，pb^2＋在修饰电极上于一0．5V产生灵敏的溶出峰，Pb^2＋在3．0×10。～2．0x10^-5mol／L浓度范围内与其溶出峰电流呈良好的线性关系，检出限为6．O×10-8mol／L。该修饰电极制备简单，稳定性好，完全做到无汞化操作，用于血铅含量的测定，效果良好。The novel construction method for the detection of Pb（Ⅱ ） has been developed using synchronous plating bismuth film on the multi-walled carbon nanotube （MWCNT）-ionic liquid （[BMIM]PFd modified electrode surface. The sensitive anodic stripping peak of Pb2＋ was obtained at the proposed sensor. Under the optimum conditions, stripping peak current of Pb2＋ has good linearity with concentration in the range of 3.0 × 10^-7 -2.0 × 10-5 tool/L, and the detection limit is 6.0 × 10^-8 mol/L. The resulting sensor is easy to prepare with good repeatability and can be used for determination of Pb（ Ⅱ ） ion in blood samples.

关 键 词：多壁碳纳米管 离子液体 修饰电极 同位镀铋膜 Pb(Ⅱ) 

分 类 号：O614.433[理学—无机化学] O657.1[理学—化学]