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Information × Registration Number 0220U001312, 0118U006427 , R & D reports Title Development and optimization of enzyme electrochemical biosensors on the basis of new functional nanomaterials for determination of arginine and their application for quality control of fruit and berry juices and hygiene products. Section 2. Development and optimization of the electronic module of the conductometric biosensor analyzer for determination of arginine popup.stage_title Head Melnyk Volodymyr, Registration Date 11-03-2020 Organization Institute of electrodinamics National academy of sciences of Ukraine popup.description2 The limits and nature of the changes of the output active resistance, conductivity, capacitance and tangent of the phase angle for the series of solution conductivity converters with gold electrodes in the frequency range 1 kHz - 100 kHz are determined. The conversion characteristics for these parameters in the practically used concentration range at the operating frequencies (30 and 70 kHz) for a series of differential sensors were obtained. Using the obtained data, the characteristics of the conductivity transducing of solutions to the output conductivity of these sensors in the range of possible concentrations were determined. Conductometric transducers have been researched using a full equivalent circuit including near-electrode area and inter-electrode non-informative parameters. Estimates of their values were obtained by calculations using the results of multifrequency measurements using a two-element equivalent scheme. Theoretical and experimental researches of possibilities of extension of the operating frequency range of the conductometric analyzer to 100 kHz and above, as well as variants of methods and means of balancing of the bridge circuit with several working frequencies, have been carried out. The structure of the secondary converter and the technical solutions for the adaptation of the new unified basic measuring module and its software for the construction of the measuring channel of the conductivity analyzer of arginine have been developed. Product Description popup.authors В.Г. Мельник О.Д. Василенко О.Л. Ламеко П.І. Борщов popup.nrat_date 2020-07-03 Close