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Metodutveckling för analys av etylenglykoler i vattenprov med gaskromatografi
Linköping University, Department of Physics, Chemistry and Biology.
2011 (Swedish)Independent thesis Basic level (university diploma), 10,5 credits / 16 HE creditsStudent thesisAlternative title
Method development for analysis of ethylene glycols in water samples by gas chromatography (English)
Abstract [sv]

Syftet med detta examensarbete var att utveckla en GC-metod för analys av etylenglykoler i förorenade vattenprover, exempelvis industriavloppsvatten. Detta skulle åstadkommas med en GC-FID och MMI (Multimode Inlet), samt helst utan provupparbetning. Ett annat av målen var att kunna kvantifiera inom området 1 ppm till 100 ppm, och att metoden skulle vara tillräckligt stabil för att kunna ackreditera den.Ett flertal kolonner testades, där en HP-5 med dimensionerna 30 m*0,53 mm*0,88 μm från Agilent var den som gav bäst resultat. Även två olika liners provades, dels en med glasull och dels en 2 mm dimpled liner, där dimpled linern gav bäst resultat, och minst ”carry-over” mellan analyserna. Bland de parametrar som gav störst effekt utmärker sig trycket i injektorn, och tiderna som de olika flödena är igång. För fullständiga inställningar, se bilaga 2.En metod redo för ackreditering hann ej tas fram, det finns ett flertal parametrar som bör undersökas för en effektivare och stabilare analys. Men metoden som är framtagen är redo för omfattande repeterbarhetstest.

Abstract [en]

The purpose of this bachelor’s thesis was to develop a GC method for analysis of ethylene glycols in polluted water samples, for example industrial sewage water. This was meant to be accomplished with a GC FID and MMI (Multimode Inlet), preferably without sample preparation. One of the goals was to be able to quantify between 1 ppm and 100 ppm, and that the method was stable enough for accreditation.A number of columns were tested, from where a HP-5 with the dimensions 30 m*0,53 mm*0,88 μm from Agilent gave the best results. Also, two different liners were tested, one with glass wool and one 2 mm dimpled liner, where the dimpled liner gave the best results and the least carry-over between samples. Amongst the parameters which gave the biggest effect, the inlet pressure and the different flow times stands out. For a full set of settings, see Bilaga 2.A method ready for accreditation was not developed due to short of time. There are still a number of parameters which should be investigated for a more efficient and stabile analysis. But the method developed is ready for extensive repeatability tests.

Place, publisher, year, edition, pages
2011. , 61 p.
Keyword [sv]
Etylenglykol, MMI, PTV, GC-FID, solvent vent mode
National Category
Analytical Chemistry
Identifiers
URN: urn:nbn:se:liu:diva-71045ISRN: LITH-IFM-G-EX–11/2470–SEOAI: oai:DiVA.org:liu-71045DiVA: diva2:444416
Subject / course
Other Chemistry
Presentation
2011-06-07, BL32, Linköpings Universitet, Linköping, 14:30 (Swedish)
Uppsok
Physics, Chemistry, Mathematics
Supervisors
Examiners
Available from: 2011-09-29 Created: 2011-09-28 Last updated: 2011-09-29Bibliographically approved

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Examensarbete(1238 kB)1336 downloads
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CiteExportLink to record
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