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Title:
Določitev optimalnega markerja homogenosti krmnih mešanic : magistrsko delo
Authors:
ID
Gluhak, Kristina
(Author)
ID
Islamčević Razboršek, Maša
(Mentor)
More about this mentor...
ID
Tepuš, Brigita
(Comentor)
Files:
MAG_Gluhak_Kristina_2019.pdf
(1,71 MB)
MD5: 1D20F37368E57B8238D84602AAAAA9BD
PID:
20.500.12556/dkum/6b9c3ee9-0ce2-4132-b30f-2e04ffb7474a
Language:
Slovenian
Work type:
Master's thesis/paper
Typology:
2.09 - Master's Thesis
Organization:
FKKT - Faculty of Chemistry and Chemical Engineering
Abstract:
Krmne mešanice so sestavljene iz organskih in anorganskih materialov. Zakonodaja zahteva, da so zmesi krmnih mešanic po sestavi homogene in da posamezne komponente med zmesmi ne povzročajo kontaminacije krmnih mešanic med sabo, zato je potrebno izvesti testa homogenosti in navzkrižne kontaminacije. Kot markerji se lahko uporabljajo posamezna barvila (na primer metilvijolično), antibiotiki, kovine, magnetni delci itd. Osnovni namen raziskav v okviru magistarskega dela je razvoj analizne metode, ki bo po statistični obdelavi rezultatov omogočala kvantitativno določanje markerja v različnih krmnih mešanicah. Proučevali smo manganov(II) oksid (MnO) kot možni marker. V vzorcih koruze in krmne mešanice smo analizirali vsebnost petih kovin: bakra, kalija, mangana, fosforja in cinka. Vsebnost kovin smo določili z induktivno sklopljeno plazmo z optično emisijsko spektrometrijo (ICP-OES). Pridobljene rezultate kemijske analize smo komometrično obdelali. Izbrane kovine smo analizirali na vzorcih podjetja Perutnina Ptuj d.d. Izvedli smo validacijo analizne metode in ovrednotili merilno negotovost. Ugotovili smo, da je metoda določanja izbranih kovin v koruzi in krmni mešanici z ICP-OES linearna, natančna, točna in primerna za ovrednotenje vsebnosti izbranih kovin v navedenih vzorcih.
Keywords:
ICP-OES
,
homogenost
,
koruza
,
krma
,
marker
,
validacija
,
merilna negotovost
Place of publishing:
Maribor
Place of performance:
Maribor
Publisher:
[K. Gluhak]
Year of publishing:
2019
Number of pages:
XI, 51 str.
PID:
20.500.12556/DKUM-74783
UDC:
543.4.062:633.15(043.2)
COBISS.SI-ID:
22657046
NUK URN:
URN:SI:UM:DK:PRWEOWXU
Publication date in DKUM:
10.10.2019
Views:
1407
Downloads:
108
Metadata:
Categories:
KTFMB - FKKT
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:
GLUHAK, Kristina, 2019,
Določitev optimalnega markerja homogenosti krmnih mešanic : magistrsko delo
[online]. Master’s thesis. Maribor : K. Gluhak. [Accessed 20 January 2025]. Retrieved from: https://dk.um.si/IzpisGradiva.php?lang=eng&id=74783
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Licences
License:
CC BY-ND 4.0, Creative Commons Attribution-NoDerivatives 4.0 International
Link:
http://creativecommons.org/licenses/by-nd/4.0/
Description:
Under the NoDerivatives Creative Commons license one can take a work released under this license and re-distribute it, but it cannot be shared with others in adapted form, and credit must be provided to the author.
Licensing start date:
06.09.2019
Secondary language
Language:
English
Title:
Determination of the optimal marker of compound feed homogeneity
Abstract:
Compound feed consists of organic and inorganic materials. The legislature requires that the structure is homogeneous and that individual components in mixture do not cause mutual contamination. Because of that, homogeneity and cross-contamination test is performed. Markers are used for certain dyes (e.g. methyl violet), antibiotics, metals, magnetic particles, etc. The main purpose of the master's thesis is to develop experimental method, which will allow the quantitative determination of markers in different types of forage by the statistical processing of the results. The studied marker example is the manganese (II) oxide (MnO). In the samples of maize and forage, content analysis of five elements is performed: copper, potassium, manganese, phosphorus, zinc. The metal content is determined by ICP-OES (Inductively coupled plasma optical emission spectroscopy). The obtained results of the chemical analysis are processed chemometrically. Selected metals were analyzed in the samples provided by Perutnina Ptuj d.d. Analytical method was validated and measurement uncertainty was determined. We have found that the method of determination of selected metals in maize and forage with ICP-OES is linear, precise, accurate and appropriate for determining the content of selected metals in the observed samples.
Keywords:
ICP-OES
,
Homogeneity
,
Corn
,
Compound feed
,
Marker
,
Validation
,
Measurement uncertainty
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