PL
Porównano wyniki oznaczeń mikrogramowych ilości wapnia oznaczonego metodą kompleksometrycznego miareczkowania mianowanym roztworem wersenianu w obecności wskaźnika tymoloftaleino-kalceinowego i metodą absorpcyjnej spektrometrii atomowej (ASA) oraz magnezu oznaczonego spektrofotometrycznie z odczynnikiem Manna i Yoe oraz metodą ASA.
EN
The results of the determinations of calcium and magnesium in milk, its products, and in fish preserves by two methods have been compared and statistically assessed. Calcium was determined by the complexometric titration method using standardized versenate in the presence of thymolphtalein/calcein indicator and by air/acetylene flame AAS. Magnesium was determined by spectrophotometry using Mann and Yoe reagent and by air/acetylene flame AAS. Lanthanum salt was added to each sample. 107 double determinations were performed. The correlation coefficients were very high rCa = 0,970 for calcium and rMg = 0,975 for magnesium.