20.500.12556/DKUM-57089 RAZVOJ IN OPTIMIZACIJA ANALIZNIH METOD PRI SPROŠČANJU KOVIN IZ MATERIALOV NAMENJENIH STIKU Z ŽIVILI DEVELOPMENT AND OPTIMIZATION OF ANALYTICAL METHODS FOR THE RELEASE OF METALS FROM MATERIALS INTENDED FOR THE USE IN CONTACT WITH FOOD V diplomskem delu smo določali vsebnost kovin (Ag, Al, Co, Cr, Cu, Fe, Mg, Mn, Mo, Ni, Sn, Ti, V, Zn, Sb, As, Ba, Be, Cd, Hg, Li, Pb in Tl), ki se izločijo iz materialov, namenjenih stiku z živili z ICP-OES analizno metodo. Testiranje smo izvajali po navodilih, ki jih predpisuje EDQM v Technical Guide on Metals and alloys used in food contact materials. Testirali smo emajlirane posode, ki so namenjene pripravi živil, v štirih različnih barvah, in sicer v modri, beli, rjavi in črni. Spremljali smo tudi vsebnost kovin pri različnih koncentracijah medija v različnih medijih, različno število ponovitev izločanja kovin in izločanje kovin glede na barvo posode. Ugotovili smo, da nobena barva posode popolnoma ne ustreza predpisanim standardom. Pri vsaki barvi posode namreč nekaj kovin presega mejno vrednost, ki je določena s standardom. V posodi modre barve se izloči preveč Ba, Li in Co. V posodi bele barve se izloči preveč Li in Co. V posodi rjave barve se izloči preveč Li, Ni, Co in Cr. V posodi črne barve se izloči preveč Ba, Li, Ni, Co in Mn. We have defined the content of metals (Ag, Al, Co, Cr, Cu, Fe, Mg, Mn, Mo, Ni, Sn, Ti, V, Zn, Sb, As, Ba, Be, Cd, Hg, Li, Pb in Tl), which are released from materials used for contact with food with ICP-OES analysis method. Testing has been done with instructions, which are prescribed by EDQM in the Technical Guide on Metals and alloys used in food contact materials. We have tested enamel pots for food preparation in four different colours (blue, white, brown, and black). We have also been observing the content of metals with different medium concentrations, in different media, different number of metal release repetition, and release of metals according to the pot colour. We have found out that no colour of pot absolutely matches the prescribed standards. Some metals exceed the limited value, defined by standards, in every colour of the pot. In the blue pot, too much Ba, Li, and Co is deposited. In the white pot, too much Li and Co is deposited. In the brown pot, too much Li, Ni, Co, and Cr is deposited. In the black pot, too much Ba, Li, Ni, Co, and Mn is released. ICP/OES kovine sproščanje živila ICP/OES metals releasing food true true false [N. Koražija] Slovenski jezik Angleški jezik Diplomsko delo 2016-01-12 21:37:19 2016-01-28 07:07:04 2022-06-13 03:05:48 2021-05-15 03:39:08 2016 0 Maribor 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 543.632(043.2) 19400982 URN:SI:UM:DK:GGRMULSN UN_Korazija_Natasa_2016.pdf UN_Korazija_Natasa_2016.pdf 1 171787D3EC307BE32362EEF868CF94BF 58b8ea904c802acf7500c94e0b5bfa93ba7700f0f8d37593ee5597ff7f9686b9 e14c2bf6-7c0b-11eb-bb7a-00155d0001ca https://dk.um.si/Dokument.php?lang=slv&id=85684 Fakulteta za kemijo in kemijsko tehnologijo 0 0 0