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Biopřístupnost rtuti z ryb a rybích výrobků
 Ventrubová, Iva
The work is aimed at determining bioaccessible mercury content of fish and fish products. In the theoretical part is described mercury, health risk, levels of mercury in food, descriptions of each species, fish consumption, chemical composition and nutritional importance of fish consumption, UBM method and methods for the determination of mercury. Firstly, in the practical part the total mercury contents were measured, then there was carried out the UBM test and finally, bioaccessible levels of mercury were analyzed. Analyzed samples of fish and fish products were purchased in the markets of Czech Republic. The analysis of mercury was performed by atomic absorption spectrometer AMA 254. Limits established by legislation (Commission Regulation (EC) No. 1881/2006 as amended) were exceeded in 11 samples. The lowest percentage of mercury bioaccessibility has been found in samples of frozen marlin and the highest percentage were measured at a sample of bigeye smoked tuna.
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Rtuť v uzených rybích výrobcích
 Ventrubová, Iva
This work is focused on determination of total mercury content in smoked fish products by atomic absorption spectrometry. The theoretical part of the thesis deals with mercury, a description of the analyzed species of fish, laws and methods of mercury determination. The concentration of total mercury in smoked fish products was measured in practical part of this work. The samples were bought in stores in Czech Republic. Measuring of mercury contents in fish products (commonly available) was the aim of this work. Atomic absorption spectrometer AMA 254 was used for analysis. Most of the measured values did not exceed the limits imposed by law (Commission Regulation EU No. 420/2011), but the limit was exceeded in all samples of smoked marlin and tuna (Losica company) and in one sample of smoked tuna (Varmuža company).
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