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Monitoring of dear contamination by organohalogen compounds based xenobiotics
Doušová, Petra ; Stoupalová, Michaela (referee) ; Vávrová, Milada (advisor)
Various animal or vegetable origin bio-indicators are used for the assessment of the environmental contamination. The wild animals were chosen for monitoring of xenobiotic based organohalogen compounds. The district health facility staff collected the samples of wild boars in the territory of Central Bohemia. The controlled substances were isolated from the matrix by an extraction. The extraction was made by a petrolether and then it was purified by a column chromatography. A final cleansing of the extract was made by an acid hydrolysis. The determination of the selected analytes was finished by the method of gas chromatography with an electron capture detector. The results gave us basic information about the wild boar contamination of organohalogen pollutants.
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Monitoring of water and sediment contamination
Grajciariková, Eva ; Mravcová, Ludmila (referee) ; Vávrová, Milada (advisor)
The diploma thesis is focused on the issue of the presence of POPs in the surface water and sediments. Monitored compounds were chosen from the group of polychlorinated biphenyls (PCBs) and polybrominated diphenyl ethers (PBDE). Samples were collected in selected localities in the Slovak and the Czech Republic. Selected analytes were extracted with hexane from the aqueous matrix. Analytes were isolated by the ultrasonic extraction using a solvent mixture of hexane-dichlormethane from the solid matrix and the resulting extract was cleaned up by the column chromatography filled with the florisil and the silica gel. Target compounds were analysed by GC/ECD finally. Obtained results show the level of contamination in selected localities in the Slovak and the Czech Republic.
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Evaluation of content of PCBs and PBDEs in plant bioindicators
Vondráčková, Ilona ; Čáslavský, Josef (referee) ; Vávrová, Milada (advisor)
In the assessment of the environment pollution level, bio indicators of vegetable or animal origin are often used. Bio indicators include also needles and moss. The samples of moss and needles taken in different locations in the Czech Republic were examined to find out the presence of xenobiotics of polychlorine biphenyls and polybromide diphenylethers types. Selected analytes have been extracted from the matrix by hexan. Extracts have been refined using column chromatography on mixed florisil/silicagel sorbent. To analysis of selected compounds, GC/ECD method has been chosen. Based on our results a comparison of the contamination level in individual locations was enabled.
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Monitoring of water and sediment contamination
Grajciariková, Eva ; Mravcová, Ludmila (referee) ; Vávrová, Milada (advisor)
The diploma thesis is focused on the issue of the presence of POPs in the surface water and sediments. Monitored compounds were chosen from the group of polychlorinated biphenyls (PCBs) and polybrominated diphenyl ethers (PBDE). Samples were collected in selected localities in the Slovak and the Czech Republic. Selected analytes were extracted with hexane from the aqueous matrix. Analytes were isolated by the ultrasonic extraction using a solvent mixture of hexane-dichlormethane from the solid matrix and the resulting extract was cleaned up by the column chromatography filled with the florisil and the silica gel. Target compounds were analysed by GC/ECD finally. Obtained results show the level of contamination in selected localities in the Slovak and the Czech Republic.
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Monitoring of dear contamination by organohalogen compounds based xenobiotics
Doušová, Petra ; Stoupalová, Michaela (referee) ; Vávrová, Milada (advisor)
Various animal or vegetable origin bio-indicators are used for the assessment of the environmental contamination. The wild animals were chosen for monitoring of xenobiotic based organohalogen compounds. The district health facility staff collected the samples of wild boars in the territory of Central Bohemia. The controlled substances were isolated from the matrix by an extraction. The extraction was made by a petrolether and then it was purified by a column chromatography. A final cleansing of the extract was made by an acid hydrolysis. The determination of the selected analytes was finished by the method of gas chromatography with an electron capture detector. The results gave us basic information about the wild boar contamination of organohalogen pollutants.
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|
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Evaluation of content of PCBs and PBDEs in plant bioindicators
Vondráčková, Ilona ; Čáslavský, Josef (referee) ; Vávrová, Milada (advisor)
In the assessment of the environment pollution level, bio indicators of vegetable or animal origin are often used. Bio indicators include also needles and moss. The samples of moss and needles taken in different locations in the Czech Republic were examined to find out the presence of xenobiotics of polychlorine biphenyls and polybromide diphenylethers types. Selected analytes have been extracted from the matrix by hexan. Extracts have been refined using column chromatography on mixed florisil/silicagel sorbent. To analysis of selected compounds, GC/ECD method has been chosen. Based on our results a comparison of the contamination level in individual locations was enabled.
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