Piezoelectric atrazine sensor based on a molecularly imprinted film of titanium dioxide

Microchimica Acta (Impact Factor: 3.74). 10/2011; 175(1):63-68. DOI: 10.1007/s00604-011-0644-x


We have developed a piezoelectric sensor for the determination of atrazine. It is based on the modification of a molecularly
imprinted film of TiO2 that was placed on a quartz crystal via a surface sol–gel process. The resulting sensor exhibits high selectivity for atrazine,
a re-usability that is better than that of other sensors, a response time of 3min, a wider linear range (0.0005–8mM), and
a lower detection limit (0.1μM). The analytical application of the atrazine sensor confirms the feasibility of atrazine determination.

Graphical abstractThe response of QCM electrodes prepared by various methods to atrazine (pH 5.0).

KeywordsAtrazine–Quartz crystal microbalance (QCM)–Molecularly imprinted TiO2 film–Atrazine sensor–Determination

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