Description
| - Cílem předkládané práce bylo determinovat distribuci vybraných kovů (As, Cd, Pb, Hg, Cr, Cu a Zn) ve tkáních rybničních kaprů obecných (Cyprinus carpio L.) Analyzováno bylo 125 kusů tržních kaprů (věk 3-4 roky, hmotnost 2312 +/- 583 g) z 10 rybníků České republiky. Analyzovány byly:svalovina, játra, ledviny, slezina, žábry, ovaria a testes. Ke stanovení kovů byla použita metoda AAS, rtuť byla stanovena na jednoúčelovém analyzátoru rtuti AMA 254. Výsledky ukázaly, že různé kovy mají rozdílnou afinitu k různým tkáním. Nejvyšší obsah As a Hg byl nalezen ve svalovině, Cu v játrech a Cd a Zn v ledvinách ve srovnání s nálezem u ostatních tkání (p < 0,01). Nejnižší hodnoty kovů , zejména Cd, Cu a Hg, byly zjištěny ve slezině, žábrách a v gonádách. Obsah Pb byl v jednotlivých tkáních nízký a prakticky shodný. Rovněž obsah Cr byl vyrovnaný s ojedinělými signifikatními diferencemi (p < 0,05). Signifikantně vyšší hodnoty Cu a Cr (p < 0,05) a Zn (p < 0,01) byly naměřeny v ovariích ve srovnání s teste (cs)
- The aim of the present study was to investigate the distribution of selected metals (As, Cd,Pb, Hg, Cr, Cu and Zn) in tissues of the common carp (Cyprinus carpio L.) grown in ponds. A total of 125 market-ready carp (aged 3 - 4 years, weight 2312 +/- 583 g) from 10 fishponds in the Czech republic were analysed. The tissues analysed included muscle, liver, kidney, spleen, gills, ovaria and testes. Metal concentrations were determined by the AAS, mercury was determined using a cold-vapour AAS analyse (AMA 254). Results showed different affinities of metals to different tissues. The highest concentrations of As and Hg were in muscle tissue, Cu in the liver, and Cd and Zn in the kidneys, compared with levels in other tissues (p < 0.01). The lowest metal concentrations (particularly of Cd) were found in the spleen, gills and gonads. Lead concentrations in the individual tissues were low and practically identical. Chromium concentrations were also balanced with sporadic significant differences (p < 0.0
- The aim of the present study was to investigate the distribution of selected metals (As, Cd,Pb, Hg, Cr, Cu and Zn) in tissues of the common carp (Cyprinus carpio L.) grown in ponds. A total of 125 market-ready carp (aged 3 - 4 years, weight 2312 +/- 583 g) from 10 fishponds in the Czech republic were analysed. The tissues analysed included muscle, liver, kidney, spleen, gills, ovaria and testes. Metal concentrations were determined by the AAS, mercury was determined using a cold-vapour AAS analyse (AMA 254). Results showed different affinities of metals to different tissues. The highest concentrations of As and Hg were in muscle tissue, Cu in the liver, and Cd and Zn in the kidneys, compared with levels in other tissues (p < 0.01). The lowest metal concentrations (particularly of Cd) were found in the spleen, gills and gonads. Lead concentrations in the individual tissues were low and practically identical. Chromium concentrations were also balanced with sporadic significant differences (p < 0.0 (en)
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