Mercury(II) trace detection by a gold nanoparticle-modified glassy carbon electrode using square-wave anodic stripping voltammetry including a chloride desorption step
作者: Laure LaffontTeddy HezardPierre GrosLars-Eric HeimbürgerJeroen E. SonkePhilippe BehraDavid Evrard
作者单位: 1Université de Toulouse, UPS, INPT, Laboratoire de Génie Chimique, 118 route de Narbonne, F-31062 Toulouse, France
2CNRS, Laboratoire de Génie Chimique, F-31062 Toulouse, France
3Université de Toulouse, INPT, LCA (Laboratoire de Chimie Agro-industrielle), UMR 1010, ENSIACET, 4 allée Emile Monso, F-31030 Toulouse CEDEX 4, France
4INRA, LCA (Laboratoire de Chimie Agro-industrielle), F-31030 Toulouse, France
5FCS RTRA “Sciences et Technologies pour l'Aéronautique et l'Espace”, 23 avenue Edouard Belin, F-31400 Toulouse, France
6Université de Toulouse, UPS, Géosciences Environnement Toulouse, 14, avenue Edouard Belin, F-31400 Toulouse, France
7CNRS, Géosciences Environnement Toulouse, F-31400 Toulouse, France
刊名: Talanta, 2015, Vol.141 , pp.26-32
来源数据库: Elsevier Journal
DOI: 10.1016/j.talanta.2015.03.036
关键词: Hg(II) sensorGold nanoparticlesStripping voltammetryChloride desorption stepNatural water
原始语种摘要: Abstract(#br)Gold nanoparticles (AuNPs) were deposited on a glassy carbon (GC) substrate by constant potential electrolysis and characterized by cyclic voltammetry in H 2 SO 4 and field emission gun scanning electron microscopy (FEG-SEM). The modified AuNPs–GC electrode was used for low Hg(II) concentration detection using a Square Wave Anodic Stripping Voltammetry (SWASV) procedure which included a chloride desorption step. The comparison of the obtained results with our previous work in which no desorption step was used showed that this latter step significantly improved the analytical performances, providing a three time higher sensitivity and a limit of detection of 80pM for 300s preconcentration, as well as a lower average standard deviation. The...
全文获取路径: Elsevier  (合作)
影响因子:3.498 (2012)

  • Mercury 水星水银
  • voltammetry 伏安测量法
  • chloride 氯化物
  • glassy 玻璃质的
  • II Interactive Interface
  • detection 探测
  • electrode 电极
  • desorption 解吸
  • modified 改进
  • stripping 剥土探矿