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Title:DOLOČANJE NITRITOV V VODAH S KONSTANTNO PRETOČNIM ANALIZATORJEM
Authors:ID Lasecky, Barbara (Author)
ID Brodnjak-Vončina, Darinka (Mentor) More about this mentor... New window
ID Babič, Marjana (Comentor)
Files:.pdf VS_Lasecky_Barbara_2009.pdf (34,25 MB)
MD5: 4E4DC0284716395C64B7F3CD8C91692E
PID: 20.500.12556/dkum/b5523a26-8974-4c2b-8a3c-70fffc2530ae
 
Language:Slovenian
Work type:Undergraduate thesis
Organization:FKKT - Faculty of Chemistry and Chemical Engineering
Abstract:Za določitev nitritov v različnih vzorcih vod (pitnih, podzemnih, površinskih in odpadnih vod) smo uporabili konstantno pretočno analizo. Postopek temelji na izmerjeni absorbanci. Za pripravo osnovne standardne raztopine smo uporabili trden natrijev nitrit. Rezultate vzorcev smo ovrednotili s pomočjo umeritvene krivulje. Statistično ovrednotenje smo izvedli glede na zahteve analizne metode (koncentracijsko območje, meja določanja, meje zaznavanja, ponovljvost, obnovljivost in pravilnost). S sodelovanjem v medlaboratorijskih primerjavah smo dokazali, da je analizna metoda pravilna. Rezultate smo ovrednotili glede na dovoljene mejne vrednosti nitritov v pitnih, podzemnih in odpadnih vodah v Sloveniji. Iz rezultatov vidimo, da je vsebnost nitritov v večini analiziranih vzorciev vod nizka, saj ne presega mejnih normativov.
Keywords:konstantno pretočni analizator, nitrit, pitne vode, površinske vode, podzemne vode, odpadne vode, validacija
Place of publishing:Maribor
Publisher:[B. Lasecky]
Year of publishing:2009
PID:20.500.12556/DKUM-10913 New window
UDC:628.3:543(043.2)
COBISS.SI-ID:13339158 New window
NUK URN:URN:SI:UM:DK:2ZUR8Q5G
Publication date in DKUM:22.12.2009
Views:3237
Downloads:274
Metadata:XML DC-XML DC-RDF
Categories:KTFMB - FKKT
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Secondary language

Language:English
Title:DETERMINATION OF NITRITE IN WATERS BY CONTINUOUS FLOW ANALYSER
Abstract:For determination of nitrite in different water samples like drinking, ground and waste waters the Continuous Flow Analysis (CFA) is used. The analytical procedure is based on measuring absorbance. Stock standard solutions are prepared from sodium nitrite salt. Results of nitrite content in different water samples were evaluated using calibration curve. Statistical evaluation was performed according to the demands of the analytical method (working range, linearity, limit of quantitation LOQ, limit of detection LOD, repeatability, reproducibility and accuracy). Accuracy of the analytical method has been proven by the participation in the proficiency tests (PT-test). The obtained results were also evaluated according to the permitted concentration of nitrite in drinking, ground and waste waters in Slovenia. It was established that the concentration of nitrite was below the permitted limit in majority of analysed waters.
Keywords:Continuous Flow Analysis (CFA), nitrite, drinking waters, ground waters, waste waters, validation


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