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Flame retardants and their penetration into the terrestrial ecosystem

By Václav Chytil

Abstract

This diploma thesis was focused on the analysis of four compounds from brominated flame retardants group, namely pentabromoethylbenzene, hexabromocyclododecane, hexabromobenzene and tetrabromobisphenol A. Matrices were represented by four soil samples and four seat of fire samples. In addition, bisphenol A was also determined. First of all, process of extraction of analytes from matrices was optimized. Three different extraction techniques were tested (pressurized solvent extraction, microwave-assisted extraction and ultrasound-assisted extraction). Next step was to verify stability of target compounds in strongly acidic conditions and to optimize clean-up of extract by column chromatography. Gas chromatography with electron capture detection (GC-ECD) was chosen as an appropriate analytical method for the determination of brominated flame retardants. Bisphenol A was determined by gas chromatography with mass spectrometric detection (GC-MS). The derivatization of phenolic analytes before their final analytical determination was also essential

Topics: hexabromcyklododekan; plynová chromatografie; pentabromoethylbenzene; gas chromatography; pentabromethylbenzen; brominated flame retardants; seat of fire; sloupcová chromatografie; soil; column chromatography; bisphenol A; hexabromobenzene; bisfenol A; půda; bromované retardéry hoření; tetrabrombisfenol A; tetrabromobisphenol A; hexabrombenzen; požářiště; hexabromocyclododecane
Publisher: Vysoké učení technické v Brně. Fakulta chemická
Year: 2014
OAI identifier: oai:invenio.nusl.cz:217074
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