Synthesis by Precipitation Polymerization of a Molecularly Imprinted Polymer Membrane for the Potentiometric Determination of Sertraline in Tablets and Biological Fluids
نویسندگان
چکیده
Um quimiossensor potenciométrico para determinação seletiva de sertralina foi desenvolvido, baseado na técnica de impressão molecular. O polímero impresso molecularmente foi sintetizado através da polimerização por precipitação, usando hidrocloreto de sertralina como molécula molde, ácido metacrílico como monômero funcional e dimetacrilato de etileno glicol como um agente de ligação cruzada. O sensor foi desenvolvido pela dispersão das partículas de polímero impressas na sertralina, em plastificante dibutil sebacato e incorporação em matiz de poli(cloreto de vinila). As características do sensor proposto foram avaliadas medindo a resposta do potencial para hidrocloreto de sertralina, no intervalo de 1,0 μmol L a 10 mmol L com resposta Nernstiniana de 57,7 mV década e um limite de detecção de 0,8 μmol L. Os coeficientes de seletividade potenciométrica do sensor proposto foram avaliados e exibiram boa seletividade para sertralina com relação a outros antidepressivos. Foi usado como eletrodo indicador na determinação potenciométrica de sertralina em comprimidos e fluidos biológicos.
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