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Assessment of pesticide content in agricultural soils of the South Moravian Region
Mádrová, Anna ; Mravcová, Ludmila (referee) ; Komendová, Renata (advisor)
This bachelor's thesis deals with the issue of pesticides in soil. It evaluates the concentration levels of pesticide residues in agricultural soils in the South Moravian Region in 2015-2021. Pesticide residues were monitored as a part of the Basal Soil Monitoring System, the concentrations were determined by liquid chromatography–mass spectrometry. The monitoring is performed by the Central Institute for Supervising and Testing in Agriculture (ÚKZÚZ), which also provided all the data for this work. The most frequently detected substances were selected for evaluation – 2-hydroxyatrazine, boscalid, diflufenican, dimoxystrobin, epoxiconazole, prochloraz, tebuconazole and terbutylazine-2-hydroxy. The highest concentration was measured for boscalid. Epoxyconazole was the most frequently detected substance. The concentrations of pesticide residues found in soils of the South Moravian Region are several times lower compared to the Zlín Region and the Vysočina Region.
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Assessment of heavy metal content in agricultural soils of the Moravian-Silesian Region
Skurňová, Eliška Anna ; Doležalová Weissmannová, Helena (referee) ; Komendová, Renata (advisor)
The aim of this bachelor's thesis is evaluation of the concentration levels of selected heavy metals (arsenic, beryllium, cadmium, cobalt, chromium, copper, nickel, lead, vanadium, and zinc) in agriculture soils on 19 sampling points in Moravian-Silesian Region. The Central Institute for Supervising and Testing in Agriculture provided data for this thesis. The samples were collected as part of the Basal Soil Monitoring in sampling cycles 1995, 2001, 2007, 2013 and 2019. The contents of risk elements in soils were determined by the optic inductively coupled plasma atomic emission spectroscopy after the Aqua regia decomposition in the National Reference Laboratory ÚKZÚZ. Villages Oldřišov, Markvartovice a Nové Sedlice in Opava district were the least contaminated. The most contaminated locality was Město Albrechtice in Bruntál district, here, the legislative preventive value for copper and lead content, and the indicative value for cadmium and zinc, were exceeded. The preventive values for chromium and nickel content were exceeded in the part of the city Žilina in Nový Jičín district. The highest concentration of zinc was found in Marklovice in Karviná district, where the legislative indicative values were exceeded multiple times. It was not possible to determine from the provided sample data if the concentration of heavy metals is increasing in generally long-term perspective.
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