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Plant bioindicators of heavy metals
Pecinová, Eliška ; Doležalová Weissmannová, Helena (referee) ; Komendová, Renata (advisor)
The urban areas are exposed to high risk of contamination, and some of the plant species can indicate this contamination. For this study, plants which can accumulate heavy metals and meet the requirements for bioindicators were chosen. Lichens, moss, birch, linden, and yew were chosen as bioindicators. Plant samples were collected from the specified localities in Brno, both with and without heavy traffic, then analysed by atomic absorption spectrometry for the contents of Cd, Cu, Hg, Pb and Zn. Copper (max 47,7 mgkg-1) and zinc (max 200 mgkg-1) were detected in concentrations higher than the lower border of potential phytotoxic concentrations. Lichens and mosses were proved as the best bioindicators for most of the contaminants (Cu, Hg, Pb), except for zinc, which was indicated by birch. Linden wasn’t suitable for biomonitoring. The result concentrations in bioindicators were very variable among localities, without visible effect of traffic load, which implies other factors, which outweighed factors of contamination from the nearby traffic.
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Study of contamination of river sediments with platinum metals
Novotný, Matěj ; Řezáčová, Veronika (referee) ; Komendová, Renata (advisor)
This work deals with the characteristics of platinum metals and problems related to their toxicity and mobility in the environment, especially in the aquatic environment. These metals are released into the environment due to the use of automotive catalysts. Their function is based on the catalytic properties of platinum metals. Because of the high temperatures, these metals can be oxidized in the catalyst and subsequently emitted together with the combustion products into the surrounding atmosphere. The aim of the thesis is to measure real samples of river sediments of the river Svratka on the territory of the city of Brno and to find the possibility of contamination of the aquatic environment with these metals.
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Plant bioindicators of heavy metals
Pecinová, Eliška ; Doležalová Weissmannová, Helena (referee) ; Komendová, Renata (advisor)
The urban areas are exposed to high risk of contamination, and some of the plant species can indicate this contamination. For this study, plants which can accumulate heavy metals and meet the requirements for bioindicators were chosen. Lichens, moss, birch, linden, and yew were chosen as bioindicators. Plant samples were collected from the specified localities in Brno, both with and without heavy traffic, then analysed by atomic absorption spectrometry for the contents of Cd, Cu, Hg, Pb and Zn. Copper (max 47,7 mgkg-1) and zinc (max 200 mgkg-1) were detected in concentrations higher than the lower border of potential phytotoxic concentrations. Lichens and mosses were proved as the best bioindicators for most of the contaminants (Cu, Hg, Pb), except for zinc, which was indicated by birch. Linden wasn’t suitable for biomonitoring. The result concentrations in bioindicators were very variable among localities, without visible effect of traffic load, which implies other factors, which outweighed factors of contamination from the nearby traffic.
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Study of contamination of river sediments with platinum metals
Novotný, Matěj ; Řezáčová, Veronika (referee) ; Komendová, Renata (advisor)
This work deals with the characteristics of platinum metals and problems related to their toxicity and mobility in the environment, especially in the aquatic environment. These metals are released into the environment due to the use of automotive catalysts. Their function is based on the catalytic properties of platinum metals. Because of the high temperatures, these metals can be oxidized in the catalyst and subsequently emitted together with the combustion products into the surrounding atmosphere. The aim of the thesis is to measure real samples of river sediments of the river Svratka on the territory of the city of Brno and to find the possibility of contamination of the aquatic environment with these metals.
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Contents of mercury in edible mushrooms growing in a historical silver-mining area
BÍLÁ, Eva
Contents of mercury were determined using AAS method (instrument AMA-254) in 109 fruiting body samples of 14 edible mushroom species. The mushrooms were collected from a forest of a historical area of silver mining. The highest mercury accumulation was observed in samples of Boletus aestivalis, Maccrolepiota procera and Boletus edulis. Mercury content was highly comparable with concentrations observed in unpolluted sites.
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Mercury contents in mushrooms growing nearby a reservoir Skalka
SZABOVÁ, Martina
Contents of mercury were determined using AAS method (instrument AMA-254) in 64 fruiting body samples of 15 edible mushroom species. The mushrooms were collected from a forest nearby a reservoir Skalka. The highest mercury accumulation was observed in a sample of Boletus edulis (15.5 mg/ kg dry matter). Mercury contents were highly comparable with concentrations observed in unpolluted sites. It can be therefore concluded that mercury contents in mushroom from the observed area do not represent any health risk.
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Mercury contents in mushrooms growing nearby a factory producing ammunition and an industrial shooting-range
BRÁZDOVÁ, Lenka
Contents of mercury were determined using AAS method (instrument AMA-254) in 119 fruiting body samples of 41 mostly edible mushroom species. The mushrooms were collected from a forest near by the ammunition factory and its industrial shooting-range (fy Sellier & Bellot, Vlašim, Czech Republic). The highest mercury accumulation was observed in samples of Agaricus arvensis, Lepista nuda, Calocybe gambosa and Russu-la nigricans. Mercury content was highly comparable with concentrations observed in unpolluted sites.
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Mercury contents in mushrooms growing nearby Horní Slavkov.
BAŽILOVÁ, Štěpánka
Contents of mercury were determined using AAS method (instrument AMA-254) in 130 fruiting body samples of 13 edible mushroom species. The mushrooms were collected from a forest of a historical area of tin mining. The highest mercury accumulation was observed in samples of Boletus edulis and Calocybe gambosa. Mercury content was highly comparable with concentrations observed in unpolluted sites.
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