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Cocoliche and lunfardo in Argentinian Spanish: a sociolinguistic approach
KRÁLOVÁ, Pavlína
The aim of this thesis is to characterize the Argentine Spanish phenomena cocoliche and lunfardo and their role in contemporary Argentine Spanish. The first part of the thesis focuses on the definition of theoretical terms such as social class, linguistic variety and language contact, which are crucial for the classification and further characterization of both phenomena. In the next part, the author examines the phenomena of cocoliche and lunfardo, explaining their origins, evolution and the historical-cultural context of the emergence of these phenomena as well as the current tendencies of use in Argentine Spanish. Based on a questionnaire survey, the author specifies the type of communicative situations and the frequency of usage of selected lunfardisms. In addition, the analysis of the data obtained in situ is enriched with the results of the perception of some lunfardisms from the perspective of Argentine speakers. Finally, the conclusions are contrasted with the results of a quantitative analysis carried out in the form of a corpus search in El Corpus del Espa?ol del Siglo XXI. On the basis of the results of the empirical part of the work, an etymological glossary is compiled.
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Using of chemical mercury cold vapor generation for speciation analysis of selected mercury compounds employing HPLC and AAS
Králová, Pavlína ; Červený, Václav (advisor) ; Kratzer, Jan (referee)
The aim of this diploma thesis was to verify the usability of the chemical generation of mercury cold vapor for speciation analysis of selected mercury compounds using high - performance liquid chromatography coupled within atomic absorption spectrometry in the determination of mercury in real tap water samples. In this work, mercuric chloride, methylmercury, ethylmercury and phenylmercury were selected as model analytes. In the first part, the working conditions of chemical generation of mercury cold vapor for each of the selected specie of mercury were optimized. Optimized equipment was used to measure the calibration dependence for each specie and the basic characteristics of the method were established. After optimization of the chemical generation, HPLC column was connected prior this derivatization step and in resulted combined apparatus HPLC - CVG - QTAAS, the separation step was optimized . At optimized conditions, the calibration dependence was measured for each specie and the basic characteristics of the developed method including HPLC separation were established. In conclusion, the proposed analytical method was tested on real flowing tap water samples. Because of low content of mercury species in these samples, the recovery of the method was established when comparing the signal of...
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Determination of Se in selected food supplements using electrochemical generation of H2Se and AAS
Králová, Pavlína ; Červený, Václav (advisor) ; Hraníček, Jakub (referee)
The aim of this bachelor thesis was to verify the efficiency of electrochemical generation of H2Se in connection with atomic absorption spectrometry used to determination of selenium in real samples, specifically in selected food supplements with the declared content of selenium. Firstly, working conditions of apparatus for electrochemical generation of H2Se with atomic absorption spectrometry were optimized. Using these optimized conditions, calibration dependences for SeIV a SeVI were measured. It was found that for the quantitative determination of selenate, the prereduction step is needed. Therefore, prereduction of SeVI to SeIV was also optimized. After prereduction step, new calibrations were measured and figures of merit of determination of these selenium species were achieved from them. In conclusion, concentrations of Se in real samples of selected food supplements with the declared contents of SeIV and SeVI were determined and interference effects for such determination have been discussed.
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