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Title:DOLOČANJE NEKATERIH KLOROBENZENOV, HEKSAKLOROBUTADIENA IN HEKSAKLOROETANA V VODAH Z EKSTRAKCIJO TEKOČE-TEKOČE S PLINSKO KROMATOGRAFIJO IN DETEKTORJEM NA ZAJETJE ELEKTRONOV
Authors:ID Hojnik, Mateja (Author)
ID Brodnjak-Vončina, Darinka (Mentor) More about this mentor... New window
ID Küčan, Ladislav (Comentor)
ID Kolar, Mitja (Comentor)
Files:.pdf VS_Hojnik_Mateja_2011.pdf (1,61 MB)
MD5: DD3632CEB97F69E3CD1609DB14367DED
PID: 20.500.12556/dkum/6e2fc736-0e54-4ebf-83f5-3260b93540de
 
Language:Slovenian
Work type:Undergraduate thesis
Organization:FKKT - Faculty of Chemistry and Chemical Engineering
Abstract:Za določitev organskih klorovih spojin v vodnih vzorcih smo uporabili plinsko kromatografijo z detektorjem na zajetje elektronov (GC/ECD). Postopek priprave vzorca je bila ekstrakcija tekoče-tekoče s topilom heksan. Določali smo spojine heksakloroetan (HCE), heksaklorobutadien (HCBD), tri izomere triklorobenzena (1,2,3-TCB, 1,2,4-TCB, 1,3,5-TCB), pentaklorobenzen (PeCB) in heksaklorobenzen (HCB). Rezultate vsebnosti analiziranih spojin smo ovrednotili s primerjavo retencijskih časov in s pomočjo umeritvenih krivulj standardnih raztopin v koncentracijskem območju od 1 ng/L do 40 ng/L za HCE, HCBD, PeCB in HCB ter v območju od 2 ng/L do 80 ng/L za vse tri izomere triklorobenzena (1,2,3-TCB, 1,2,4-TCB, 1,3,5-TCB). Statistično smo podatke ovrednotili glede na zahteve razvoja metode (meja določanja (LOQ), meja zaznavanja (LOD), linearnost, ponovljivost, obnovljivost in točnost) in potrdili, da je analizna metoda za določitev organskih klorovih spojin v vodah s plinsko kromatografijo in detektorjem na zajetje elektronov (GC/ECD) pravilna in primerna za uporabo.
Keywords:organske klorove spojine, klorobenzeni, plinska kromatografija, ekstrakcija tekoče-tekoče
Place of publishing:Maribor
Publisher:[M. Hojnik]
Year of publishing:2011
PID:20.500.12556/DKUM-17703 New window
UDC:628.3:543(043.2)
COBISS.SI-ID:15147542 New window
NUK URN:URN:SI:UM:DK:FYQ7JDXD
Publication date in DKUM:24.03.2011
Views:3157
Downloads:366
Metadata:XML DC-XML DC-RDF
Categories:KTFMB - FKKT
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Secondary language

Language:English
Title:DETERMINATION OF SOME CHLOROBENZENES, HEXACHLOROBUTADIENE AND HEXACHLOROETHANE IN WATER SAMPLES USING LIQUID-LIQUID EXTRACTION AND GAS CHROMATOGRAPHY WITH ELECTRON CAPTURE DETECTOR
Abstract:For determination of organic chlorine compounds in water samples, gas chromatography with electron capture detector (GC/ECD) was used. Sample preparation was based on liquid-liquid extraction with solvent hexane. Analyzed compounds are hexachloroethane (HCE), hexachlorobutadiene (HCBD), three isomers of trichlorobenzene (1,2,3-TCB, 1,2,4-TCB, 1,3,5-TCB), pentachlorobenzene (PeCB) and hexachlorobenzene (HCB). Results of content of analyzed compounds were evaluated by comparing retention times and using calibration curves of standard solutions in concentration range from 1 ng/L to 40 ng/L for HCE, HCBD, PeCB, HCB and in the range from 2 ng/L to 80 ng/L for all three isomers of trichlorobenzenes (1,2,3-TCB, 1,2,4-TCB, 1,3,5-TCB). Statistical evaluation was performed according to the demands of the analytical method (limit of quantitation (LOQ), limit of detection (LOD), linearity, repeatability, reproducibility and accuracy). It was confirmed that the analytical method for determination of organochlorine compounds in water samples using GC/ECD is accurate and appropriate for use.
Keywords:organochlorine compounds, chlorobenzenes, gas chromatography, liquid-liquid extraction


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