The performance characteristics (selectivity, slope of the electrode response, response time) of polyvinyl chloride and modified polyvinyl chloride based solvent polymeric, potassium selective membrane electrodes were evaluated in relevance to the analysis of ionic constituents in biological samples. A flow-injection system incorporating a macro wall-jet potentiometric detector was designed and its utility for the potassium assay in undiluted urine samples was evaluated. Analytical data obtained by flow methods for the potassium content of patients' blood serum and urine samples had been correlated with flame atomic emission spectrometric data.
ASJC Scopus subject areas
- Analytical Chemistry