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New biomimetic sensors for the determination of tetracycline in biological samp...
Moreira, Felismina T. C.; Guerreiro, J. Rafaela L.; Azevedo, Vera Lúcia; Kamel, Ayman H.; Sales, M. Goreti F.New potentiometric membrane sensors with cylindrical configuration for tetracycline (TC) are described based on the use of a newly designed molecularly imprinted polymer (MIP) material consisting of 2-vinylpyridine as a functional monomer in a plasticized PVC membrane. The sensor exhibited significantly enhanced response towards TC over the concentration range 1.59 10 5–1.0 10 3 mol L 1 at pH 3–5 with a low...
Sulfadiazine-potentiometric sensors for flow and batch determinations of sulfad...
Kamel, Ayman H.; Almeida, Sofia A. A.; Sales, M. Goreti F.; Moreira, Felismina T. C.New PVC membrane electrodes for the determination of sulfadiazine (SDZ) are presented. The electrodes are fabricated with conventional and tubular configurations with a graphite-based electrical contact, and no internal reference solution. The selective membranes consist of bis(triphenylphosphoranilidene)ammonium·SDZ (electrode A), tetraoctylammonium bromide (electrode B), or iron(II)-phthalocyanine (FePC) (ele...
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