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Title:Določanje težkih kovin z ICP - AES v kalcijevih fosfatih
Authors:ID Medveš, Tanja Tatjana (Author)
ID Kolar, Mitja (Mentor) More about this mentor... New window
ID Brodnjak Vončina, Darinka (Comentor)
Files:.pdf VS_Medves_Tanja_Tatjana_2010.pdf (1,44 MB)
MD5: 25DBA39DA9413AC4E7D4C4F78C0F7A01
PID: 20.500.12556/dkum/ff756b28-156d-4bc3-bc9f-f7d5308f4cd0
 
Language:Slovenian
Work type:Undergraduate thesis
Organization:FKKT - Faculty of Chemistry and Chemical Engineering
Abstract:Namen diplomske naloge je bil s pomočjo meritev realnih vzorcev kalcijevih fosfatov in meritev referenčnih materialov oziroma standardov z ICP — AES ugotoviti ali je ta metoda primerna za določanje vsebnosti arzena, kadmija in svinca v vzorcih kalcijevih fosfatov krmne in prehrambene kvalitete ter pregled rezultatov realnih vzorcev glede na veljavno zakonodajo. Ker je proizvajalcev kalcijevih fosfatov v svetu zelo malo, tudi literature o analitiki ni veliko. Najprej sem s pomočjo referenčnega materiala in pripravljenih standardov potrdila, da je metoda, s katero sem določevala vsebnost težkih kovin, primerna za izbrano merilno območje. Nato sem izmerila še vsebnost težkih kovin v realnih vzorcih kalcijevih fosfatov ter njihove vrednosti primerjala z veljavno zakonodajo na področju krme in živil. Vsebnosti arzena, kadmija in svinca so v skladu z zakonodajo v kalcijevih fosfatih krmne kvalitete od 10 mg/kg za arzen in kadmij, do 15 mg/kg za svinec. V kalcijevih fosfatih prehrambene kvalitete pa so te vrednosti nižje, saj znašajo od 1 mg/kg za kadmij, 3 mg/kg za arzen in 4 mg/kg za svinec.
Keywords:ICP – AES, kalcijevi fosfati, težke kovine, arzen, kadmij, svinec
Place of publishing:Maribor
Publisher:[T. T. Medveš]
Year of publishing:2010
PID:20.500.12556/DKUM-14809 New window
UDC:543.42:666.123.4(043.2)
COBISS.SI-ID:14398742 New window
NUK URN:URN:SI:UM:DK:S99LMDCF
Publication date in DKUM:20.07.2010
Views:3829
Downloads:560
Metadata:XML DC-XML DC-RDF
Categories:KTFMB - FKKT
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Secondary language

Language:English
Title:ICP - AES determination of heavy metals in calcium phosphates
Abstract:The purpose of the diploma thesis was to measure in real samples of calcium phosphates and reference materials or standard solutions by ICP - AES to confirm whether this method is suitable for the determination of arsenic, cadmium and lead in samples of calcium phosphates "feed" and "food" quality and check the quality of results from real samples depending on the applicable legislation. There is few literature data available on analysis of heavy metals of calcium phosphate since there are not many producers of calcium phosphates in the world. First of all, it was confirmed using a reference material and prepared standards that the method for determination a content of heavy metals is suitable in a selected range. Then I measured the amount of heavy metals in real samples of calcium phosphates, and their content was compared with the current legislation on feed and food. The content of arsenic, cadmium and lead is in accordance with the law in calcium phosphates "feed" quality of 10 mg / kg for arsenic and cadmium, and 15 mg / kg for lead. For calcium phosphates "food" qualities these values are lower, ranging from 1 mg / kg for cadmium, 3 mg / kg for arsenic and 4 mg / kg for lead.
Keywords:ICP – AES, Calcium phosphates, heavy metals, arsenic, cadmium, lead


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