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Določanje kalcija v mlečnem kremnem namazu : diplomska naloga = Determination of calcium in dairy cream spread : graduation thesis
Smrkolj, Polona
Namen diplomske naloge je bil najti najprimernejǴo analitsko metodo za dolořanje kalcija v mleřnem kremnem namazu s krispiji in dodanimkalcijem. Kalcij v vzorcu smo dolořali s permanganometriřno ...metodo v raztopini pepela vzorca in z metodo merjenja atomske absorpcije raztopine pepela vzorca v plamenu N2O - acetilen in z metodo merjenja atomske absorpcijeemulzije vzorca v plamenu N2O - acetilen, ki jo pripravimo z ultrazvokom. NajviǴjo vrednost vsebnosti kalcija smo dobili pri permanganometriřni metodi 0,262 % in tudi najviǴji standardni odklon 0,022 % kalcija. Koliřina kalcija v vzorcu, dolořena z metodo PAAS v emulziji, je 0,252 % in standardni odklon 0,005 % kalcija. Z metodo PAAS v raztopini pepelaje vrednost kalcija 0,243 % in standardni odklon 0,005 % kalcija. S statistiřno analizo smo ugotovili skladnost rezultatov uporabljenih metod (p ?0,01). S staliǴřa natanřnosti sta prav gotovo najprimernejǴi metodi PAAS v pepelu vzorca in predvsem PAAS v emulziji vzorca. Tudi s staliǴřa trajanja procesa sta primernejǴi ti dve metodi, predvsem PAAS v emulziji. Vendar pa je za uporabo v industriji najveřkrat najpomembnejǴi finanřni vidik, zato pa je najprimernejǴa permanganometriřna metoda.
Type of material - undergraduate thesis
; adult, serious
Publication and manufacture - Ljubljana : [BF, Oddelek za živilstvo] : [P. Smrkolj], 2000
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