Simultaneous Determination of Thallium and Lead |
| 发表时间：2010-2-15 |
| Abstract A new voltammetric sensor， Langmuir –Blodgett (LB) film of a p-tert-butylcalix[4]arene derivative modified glassy carbon electrode， was designed and successfully used in simultaneous determination of Tl þ and Pb2þ by square-wave anodic stripping voltammetry. Under the optimum experimental conditions， this newly developed sensor reveal good linear response for Tl þ and Pb2þ in the concentration range of 3108 –4106 mol L1 and 2107 –2105 mo L1 respectively. The detect limits are 2108 mol L1 for Tl þ and 8108 mol L1 for Pb2þ. Using proposed method Tl þ and Pb2þ in environment samples were determined with satisfactory results. Keywords: Calixarenes， Langmuir –Blodgett， Thallium， Lead， Square-wave anodic stripping voltammetry DOI: 10.1002/elan.200900300 |