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Simultaneous Determination of Thallium and Lead on a Chemically Modified Electrode with Langmuir– Blodgett Film of a p ‐tert‐Butylcalix[4]arene Derivative
Author(s) -
Zou Lina,
Zhang Yufeng,
Qin Haili,
Ye Baoxian
Publication year - 2009
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.200900300
Subject(s) - thallium , langmuir–blodgett film , electrode , voltammetry , derivative (finance) , chemistry , analytical chemistry (journal) , stripping (fiber) , square wave , anodic stripping voltammetry , nuclear chemistry , electrochemistry , materials science , inorganic chemistry , chromatography , organic chemistry , molecule , physics , composite material , voltage , quantum mechanics , financial economics , economics
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 + and Pb 2+ by square‐wave anodic stripping voltammetry. Under the optimum experimental conditions, this newly developed sensor reveal good linear response for Tl + and Pb 2+ in the concentration range of 3×10 −8 –4×10 −6 mol L −1 and 2×10 −7 –2×10 −5 mol L −1 respectively. The detect limits are 2×10 −8 mol L −1 for Tl + and 8×10 −8 mol L −1 for Pb 2+ . Using proposed method, Tl + and Pb 2+ in environment samples were determined with satisfactory results.