| | SLO | ENG | Cookies and privacy

Bigger font | Smaller font

Show document Help

Title:VALIDACIJA POSTOPKA DOLOČITVE MASNEGA DELEŽA KALCIJA V VZORCIH APNENČEVE MOKE IN OVREDNOTENJE MERILNE NEGOTOVOSTI REZULTATA DOLOČITVE KALCIJA
Authors:ID Ojsteršek, Janja (Author)
ID Brodnjak-Vončina, Darinka (Mentor) More about this mentor... New window
ID Kolar, Mitja (Comentor)
Files:.pdf VS_Ojstersek_Janja_2013.pdf (2,90 MB)
MD5: FC83BF267BA5498A9BE872DAD013C7A3
PID: 20.500.12556/dkum/31e03e34-0cdb-49f8-82c4-1219aec0de66
 
Language:Slovenian
Work type:Undergraduate thesis
Typology:2.11 - Undergraduate Thesis
Organization:FKKT - Faculty of Chemistry and Chemical Engineering
Abstract:Namen diplomske naloge je bil razviti in validirati kompleksometrično metodo za določanje masnega deleža kalcija v vzorcih apnenčeve moke z avtomatskim titratorjem in fotometrično določitvijo končne točke s fototrodo. V prvi stopnji razvoja preskusne metode smo pregledali obstoječo literaturo, priskrbeli referenčni material in kemikalije ter pripravili ustrezne raztopine. Z upoštevanjem optimalnih pogojev delovanja fototrode in z definiranjem titracijskih parametrov smo na avtomatskem titratorju izdelali dve kompleksometrični metodi: metodo za standardizacijo titracijske raztopine EDTA in metodo za določanje masnega deleža kalcija v vzorcih apnenčeve moke. Po izbiri ustreznih parametrov validacijskega postopka preskusne metode smo izvedli eksperimente, potrdili njeno primernost za predvideno uporabo in ovrednotili merilno negotovost rezultata določitve kalcija. Ugotovili smo, da je postopek določitve masnega deleža kalcija v vzorcih apnenčeve moke primeren za predvideno uporabo. Z validacijo smo dokazali, da je preskusna metoda natančna, točna, linearna in selektivna. Z ovrednotenjem merilne negotovosti rezultata določitve kalcija smo določili kakovost in lažjo primerljivost rezultatov.
Keywords:kalcij, kalcijev karbonat, apnenčeva moka, fotometrična določitev, fototroda, kompleksometrična titracija, končna točka, EDTA
Place of publishing:Maribor
Publisher:[J. Ojsteršek]
Year of publishing:2013
PID:20.500.12556/DKUM-39876 New window
UDC:543.245:[666.364:553.55](043.2)
COBISS.SI-ID:17461526 New window
NUK URN:URN:SI:UM:DK:9OQCSYJZ
Publication date in DKUM:03.04.2013
Views:2526
Downloads:410
Metadata:XML DC-XML DC-RDF
Categories:KTFMB - FKKT
:
Copy citation
  
Average score:(0 votes)
Your score:Voting is allowed only for logged in users.
Share:Bookmark and Share



Hover the mouse pointer over a document title to show the abstract or click on the title to get all document metadata.

Secondary language

Language:English
Title:VALIDATION AND MEASUREMENT UNCERTAINTY FOR DETERMINATION OF MASS FRACTION OF CALCIUM IN CALCITE SAMPLES
Abstract:The purpose of this diploma thesis was to develop and validate a complexometric method for determination of the mass fraction of calcium in calcite samples using an automatic titrator and a photometric endpoint detection using a phototrode. During the initial phase of test method development the existing literature data was explored. The acquired reference materials and chemicals, as well as the preparation of the appropriate solutions were selected. Taking into account the optimal operating conditions of the phototrode and by defining the titration parameters, two complexometric methods using the titrator have been developed; namely the standardization of titrant EDTA method and the determination of the mass fraction of calcium in calcite samples method. After choosing the adequate characteristics of the test method validation procedure the experiments were conducted, which confirmed the suitability of the proposed method for its intended use. Measurement uncertainty of the results of calcium determination was evaluated. We established that the process for determination of mass fraction of calcium in calcite samples is suitable for its intended use. We have shown, through validation, that the test method is precise and accurate, as well as linear and selective. By evaluating the measurement uncertainty of the result of calcium determination the quality and easier comparability of the result have been established.
Keywords:calcium, calcium carbonate, calcite, photometric determination, phototrode, complexometric titration, endpoint, EDTA


Comments

Leave comment

You must log in to leave a comment.

Comments (0)
0 - 0 / 0
 
There are no comments!

Back
Logos of partners University of Maribor University of Ljubljana University of Primorska University of Nova Gorica