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Title:VALIDACIJA IN DOLOČANJE MERILNE NEGOTOVOSTI SPEKTROFOTOMETRIČNE METODE FENOLNEGA INDEKSA (SIST ISO 6439:1996/A) ZA IZLUŽKE ODPADKOV IZRABLJENIH AKUMULATORJEV
Authors:ID Padjen, Maja (Author)
ID Kolar, Mitja (Mentor) More about this mentor... New window
ID Brodnjak-Vončina, Darinka (Comentor)
ID Hercog, Danijela (Comentor)
Files:.pdf UNI_Padjen_Maja_2012.pdf (2,94 MB)
MD5: E947FDCE99EBC027074DB77456213D9F
PID: 20.500.12556/dkum/fbfe1539-b046-4a08-b721-a4ee5cb03189
 
Language:Slovenian
Work type:Undergraduate thesis
Typology:2.11 - Undergraduate Thesis
Organization:FKKT - Faculty of Chemistry and Chemical Engineering
Abstract:V diplomskem delu sta bili izvedeni validacija in določitev merilne negotovosti fenolnega indeksa spektrofotometrične metode s 4-aminoantipirinom s predhodno destilacijo po SIST ISO 6439: 1996 metoda A. Izlužek odpadkov je bil pripravljen s postopkom ekstrakcije, kjer odstranjujemo iz trdnih zmesi topne komponente s topilom, ki je v našem primeru voda. Odpadek je opredeljen kot nevaren odpadek, saj vsebuje težke kovine – svinec, sestavljata pa ga še polipropilen in polivinil klorid. V izlužku odpadkov izrabljenih akumulatorjev smo spremljali koncentracijo fenolnega indeksa, ki po uredbi o odpadkih ne sme presegati 100 mg/l. Validacija analizne metode je obsegala določitev merilnega območja, mejo zaznavnosti in mejo določljivosti, linearnost, natančnost meritev, točnost in vpliv interferenc. Ko so bili doseženi predpisani parametri, predvsem linearnost in točnost metode, ter so bili tudi vsi ostali parametri pod predhodno določeno mejo, je bila validacija zaključena. Ugotovili smo, da merilna negotovost znaša ± 11% odstopanja od prave vrednosti rezultata (faktor pokritja k = 2 predstavlja 95% stopnjo zaupanja) in je bila določena po modelu, ki uporablja validacijske podatke.
Keywords:validacija, merilna negotovost, spektrofotometrija, fenolni indeks, izlužek odpadka
Place of publishing:Maribor
Publisher:[M. Padjen]
Year of publishing:2012
PID:20.500.12556/DKUM-37510 New window
UDC:543.422.3(043.2)
COBISS.SI-ID:16712726 New window
NUK URN:URN:SI:UM:DK:SJQ2CLJO
Publication date in DKUM:11.09.2012
Views:2328
Downloads:312
Metadata:XML DC-XML DC-RDF
Categories:KTFMB - FKKT
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Secondary language

Language:English
Title:VALIDATION AND MEASUREMENT UNCERTAINTY ESTIMATION OF PHENOL INDEX SPECTROPHOTOMETRIC METHOD (ISO 6439:1996/A) FOR LEACHING WASTE WATER FROM OLD BATTERIES
Abstract:In the thesis validation and determination of measurement uncertainty of phenol index spectrophotometric method with 4-aminoantipyrine with prior distilation by SIST ISO 6439:1996 the method A were performed. Leaching waste was prepared by the extraction procedure, where soluble components are removed from solid mixtures by the solvent, which in our case is water. The waste is considered a hazardous waste, because it contains heavy metals – lead. Mostly it contains polypropylene and polyvinyl chloride. In leaching waste from old batteries we followed concentrations of phenol index, which in accordance to the Decree on waste management should not exceed 100 mg/ l. Validation included determination of measuring range, limit of quantification and limit of determination, linearity, precision of measurements, accuracy and influence of interferences. When linearity and accuracy of the method were achieved and the other parameters were below the certain limit, the validation was completed. We found out that measurement uncertainty deviates from results for ± 11 % (the coverage factor k = 2 gives a confidence level of approximately 95 %) and was determinated by the model, which uses validation data.
Keywords:validation, measurement uncertainty, spectrophotometry, phenol index, leaching waste


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