Old Principle of Liquid Ion-Impedance Spectrometry (Particularly in Milk) Realised by New Components

• Main Authors: Blahins Jānis, Bžiškjans Armans, Kalniņš Guntis
• Format: Article
• Language: English
• Published: Sciendo 2020-12-01
• Series: Proceedings of the Latvian Academy of Sciences. Section B, Natural Sciences
• Subjects: experiment computerisation; ac-conductometry; balanced bridge circuit; electrode anti-polarisation; two-electrode-system; milk mastitometry; electronic circuitry
• Online Access: https://doi.org/10.2478/prolas-2020-0059
• ISSN: 1407-009X

Ion impedance spectrometry enables detection of the concentrations of multiple chemical compositions in a weak solution, usually if only part of a complex signal is used and the frequency is not swept. Prior to the method described in this paper, ion impedance required rather sophisticated electronics to collect the results from an instrument, as well as the electrode polarisation minimising. We elaborated and tested circuitry that uses the newest electronics components for a chemical analysis instrument designed according to a principle patented in Latvia (No. SU-1021440A), year 1981. The newly improved ion impedance spectrometry apparatus is suited for accurate measurement of ion concentrations for commercial use by various trade professionals. The primary target was an in-flow milk tester for dairy farm milking devices (yet this is not the exclusive use).