Določevanje kadmija v vodi z elektrotermično atomsko absorpcijsko spektrometrijo

diplomsko delo

Lučka Simon (Author), Darinka Brodnjak-Vončina (Mentor), Ksenija Gradišek (Co-mentor)

Abstract

Diplomsko delo sem opravljala v Fizikalnem laboratoriju Službe kakovosti v Cinkarni Celje, d. d., kjer med drugim določajo tudi kadmij nizkih (sledov) koncentracij v vodah. Standard SIST EN ISO 15586:2003 opisuje metodo za določevanje nizkih koncentracij (sledi) kadmija v vodah. V standardu so navedene sposobnosti metode, dobljene z vrednotenjem med laboratorijske primerjave, in optimalno območje določevanja kadmija v vodah od 0,4 % g/l do 4 % g/l, kar je območje, ki je zanimivo za matrice pitnih, površinskih in podzemnih vod ter deževnic. Preverili smo ali lahko s spektrometrom Varian SpectrAA DUO, AA 240Z GTA 12 dosežemo parametre standarda in zahteve Pravilnika o pitni vodi. Metodo za določanje kadmija v vodah s spektrometrom Varian SpectrAA DUO, AA 240Z GTA 120 smo validirali in ocenili merilno negotovost.

Keywords

diplomska dela;voda;kadmij;validacija;merilna negotovost;atomska absorpciojska spektometrija;analizna kemija;ETAAS;

Data

Language:	Slovenian
Year of publishing:	2014
Typology:	2.11 - Undergraduate Thesis
Organization:	UM FNM - Faculty of Natural Sciences and Mathematics
Publisher:	[L. Simon]
UDC:	543.3:543.421:546.48(043.2)
COBISS:	20873736
Views:	1565
Downloads:	144
Average score:	0 (0 votes)
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Other data

Secondary language:	English
Secondary title:	Determination of cadmium in water with electrothermal atomic absorption spectometry (ETAAS)
Secondary abstract:	I wrote my thesis working in the Physics laboratory of the Department of Quality Assurance of Cinkarna Celje, d. d., where, among others, trace elements in water are being detected. The SIST EN ISO Standard 15586:2003 includes principles and procedures for the determination of trace levels of Cadmium in waters. The characteristics of the method were acquired by inter-laboratory comparison evaluation, and are listed in the standard, along with the optimal range of determining Cadmium in waters (from 0,4 %g/L to 4 %g/L) - the range, optimal for the matrices of surface-, underground-, drinking water and rainwater. Using the Varian SpectrAA DUO AA 240Z GTA 12, we have tried to reach the parameters of the standard and drinking water regulations. We have validated the method for detecting Cadmium in waters with the Varian SpectrAA DUO AA 240Z GTA 12 spectrometer, and evaluated the measurement uncertainty.
Secondary keywords:	Cadmium;water;validation;measurement uncertainty;
URN:	URN:SI:UM:
Type (COBISS):	Undergraduate thesis
Thesis comment:	Univ. v Mariboru, Fak. za naravoslovje in matematiko, Oddelek za biologijo in Katedra za izobraževalno kemijo
Pages:	XII, 68 f.
ID:	8730568