Automated ion-selective electrode method for salt determination in foods
1985
Balulescu, Lano
A computer-controlled automated method and analytical system is used for simultaneous determination of sodium (Na), potassium (K), and chloride (Cl) in foods. The analysis is based on the use of ion-selected electrodes, and takes about 90 seconds (i.e., up to 40 samples/hour). Sample-to-sample precision is 1-2% and analytical accuracy for Na, K, and Cl is claimed to be 5, 5, and 7 %, respectively. Data obtained for various foods and beverages are compared to results obtained by flame photometry and Volhard titrimetry. A schematic of the automated analytical system is shown. (wz)
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