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bstract

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 Tlt and Pb2t by square-wave

anodic stripping voltammetry. Under the optimum experimental conditions， this newly developed sensor reveal good

linear response for Tlt andA Pb2t in the concentration range of 3 ? 10à8 – 4 ? 10à6 mol Là1 and 2 ? 10à7 – 2 ? 10à5 mol

Là1 respectively. The detect limits are 2 ? 10à8 mol Là1 for Tlt and 8 ? 10à8 mol Là1 for Pb2t. Using proposed method，

Tlt and Pb2t in environment samples were determined with satisfactory results.