| | SLO | ENG | Cookies and privacy

Bigger font | Smaller font

Show document

Title:Uporaba klorovega dioksida za razkuževanje vode in določanje ostanka s terensko metodo : magistrsko delo
Authors:ID Mertik, Sandra (Author)
ID Simonič, Marjana (Mentor) More about this mentor... New window
ID Sovič, Nataša (Co-mentor)
Files:.pdf MAG_Mertik_Sandra_2021.pdf (2,32 MB)
MD5: 0E71611DFF31677708E552163C8901D4
 
Language:Slovenian
Work type:Master's thesis/paper (mb22)
Typology:2.09 - Master's Thesis
Organization:FKKT - Faculty of Chemistry and Chemical Engineering
Abstract:Namen magistrskega dela je razvoj analitske metode za terensko merjenje klorovega dioksida. Za terensko delo je primerna DPD metoda, ki smo jo želeli primerjati z jodometrično metodo. Uporaba klorovega dioksida kot sredstva za razkuževanje pitne vode se je v zadnjih letih precej povečala. Klorov dioksid je dražji, bolj zapleten za uporabo, vendar učinkovit že pri nizkih koncentracijah. Glavna prednost je manj stranskih produktov, predvsem nižje koncentracije trihalometanov. Hkrati smo preverili tudi delovanje aparata za merjenje klora na terenu, uporabili smo tudi revalidacijo, naš namen je bil znižati mejo zaznavanja (LOD) na 0,03 mg/l. V magistrski nalogi je bila merilna negotovost en izmed pomembnejših faktorjev metode. Ugotovili smo, da je merilna negotovost najvišja pri najnižji izmerjeni koncentraciji klora, pri višjih koncentracijah pa je bila manjša merilna negotovost. Izračuna merilne negotovosti za klor dioksid pa ni bilo možno izračunati, saj so nam manjkali podatki meritve pri obnovljivosti metode. Klor dioksid se v vodi hitro porablja, istega vzorca nismo mogli uporabiti v daljšem časovnem obdobju. Pri jodometrični metodi pa smo prišli do zaključka, da se je koncentracija pripravljene raztopine klora dioksida znižala po določenih dneh. Predpostavljamo, da je v laboratoriju pripravljena raztopina klor dioksid neobstojna in kot taka težko merljiva v laboratoriju.
Keywords:klor dioksid, klor, validacija, jodometrična metoda, DPD, merilna negotovost
Year of publishing:2021
Place of performance:Maribor
Publisher:[S. Mertik]
Number of pages:XII, 53 f.
Source:Maribor
UDC:628.166.094.413(043.2)
COBISS.SI-ID:61881091 New window
Publication date in DKUM:04.05.2021
Views:409
Downloads:41
Metadata:XML RDF-CHPDL DC-XML DC-RDF
Categories:KTFMB - FKKT
:
  
Average score:(0 votes)
Your score:Voting is allowed only for logged in users.
Share:AddThis
AddThis uses cookies that require your consent. Edit consent...

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

Licences

License:CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Link:http://creativecommons.org/licenses/by-nc-nd/4.0/
Description:The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.
Licensing start date:02.04.2021

Secondary language

Language:English
Title:Use of chlorine dioxide for water disinfection and determination of residue by field method
Abstract:The purpuse of the masters thesis is development of field method for chlorine dioxide measurement. Appropriate method for field measurements of chlorine dioxide is DPD method, which we wanted to test against iodometric method for measurement of chlorine dioxide. Use of chlorine dioxide as disinfecting agent for drinking water has risen a lot in latest years. Chlorine dioxide is more expensive, more complex for use, but on the other hand, effective at lower concentrations. Its main advantage is less side products and most of all, lower concentrations of trihalomethanes. We have concurrently checked working of field aparatus for chlorine measurement, used revalidation and our goal was to lower the LOD to 0,03 mg/l. In the masters thesis, uncertainty of measurement was one of the most important factors of the method. We found that the measurement uncertainty was highest at the lowest measured chlorine concentration, and at the higher concentrations the measurement uncertainty was lower. It was not possible to calculate the measurement uncertainty for chlorine dioxide. We lacked measurement data in the reproducibility of the method. Chlorine dioxide is consumed quickly in water and the same sample could not be used for a long period of time. In the iodometric method we came to the conclusion that the concentration of the prepared chlorine dioxide solution decreased after certain days. We assumed that the chlorine dioxide solution is unstable and as such difficult to measure in the laboratory.
Keywords:chlorine dioxide, chlorine, validation, iodometric method, DPD, measurement uncertainty


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