Potentiometric sensors based on organic ion exchangers of tetraalkylammonium and silver complexes with ampicillin,oxacillin, and cefazolin |
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Authors: | E G Kulapina S V Snesarev |
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Institution: | 1.Institute of Chemistry,Saratov State University,Saratov,Russia |
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Abstract: | Potentiometric sensors with plasticized polymer membranes based on tetraalkylammonium organic ion exchangers and silver(I)
complexes with ampicillin, oxacillin, and cefazolin are proposed for the quantification of antibiotics in model mixtures.
The quantitative parameters of complex species of silver with β-lactam antibiotics (β-lac) are established. The complexes
(β-lac)2Ag are shown applicable as electroactive components of membranes of potentiometric sensors with tetraalkylammonium cations
as counterions. For the information on potentiometric selectivity coefficients and the parameters of cross-sensitivity of
sensors in solutions of β-lactam antibiotics they might be used in multisensor systems of the electronic tongue type. The
analytical signals are processed by the method of neural network. The average relative error of the individual quantification
of β-lactam antibiotics in three-component model mixtures was 4–6%. |
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