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