Description
| - Umělé %22musk%22 sloučeniny, které jsou obsažené téměř ve všem spotřebním zboží, se dostávají do vodního prostředí zejména v odpadních vodách. Monitoring obsahu těchto ralativně perzistentních chemikálí byl prováděn na řece Vltava v místech silné průmyslové aglomerace soustředěné v okolí Prahy. Jako bioindikátor zatížení vodního prostředí byl zvolen jelec tloušť ((Leuciscus cephalus). Vzorky byly analyzovány pomocí plynové chromatografie s hmotnostně spektrometrickou detekcí. Nejčastěji, ze skupiny polycyklických %22musk%22 sloučenin, byl zaznamenán výskyt 1,3,4,6,7,8- hexahydro-4,6,6,7,8,8-hexamethyl-cyclopenta-(c)-2-benzopyran (galaxolid) a 1-(5,6,7,8-tetrahydro-3,5,5,6,8,8- hexamethyl-2-naphthalenyl)-ethanon (tonalid). Naměřené hladiny těchto sloučenin se pohybovaly v rozmezí 1,7 až 105,9 μg/kg čerstvé tkáně pro galaxolid a 0.9 to 19.3 μg/kg čerstvé tkáně pro tonalid. V mnoha vzorcích byly také detekovány dusíkaté %22musk%22 sloučeniny, %22musk%22 keton a %22mus (cs)
- Synthetic musk fragrances, which are contained in almost all scented consumer products, enter aquatic environment mainly by way of wastewater paths. To monitor contamination of the Vltava River by these relatively persistent chemicals in the surroundings of Prague industrialized agglomeration, chub (Leuciscus cephalus) was employed as a bioindicator. Validated gas chromatography- mass spectrometry method was used for fish sample examination. Polycyclic musks, represented by 1,3,4,6,7,8- hexahydro-4,6,6,7,8,8-hexamethyl-cyclopenta-(c)-2-benzopyran (galaxolide) and 1-(5,6,7,8-tetrahydro-3,5,5,6,8,8- hexamethyl-2-naphthalenyl)-ethanone (tonalide) were the most abundant representatives of this group; their levels in fillets were in the range of 1.7 to 105.9 lg/kg and 0.9 to 19.3 lg/kg wet weight, respectively. Nitro-musks, musk ketone, and musk xylene were also detected in most samples; nevertheless, their levels were lower, Ł 2 lg/kg. Significant contamination of resident fish was recognised in the local
- Synthetic musk fragrances, which are contained in almost all scented consumer products, enter aquatic environment mainly by way of wastewater paths. To monitor contamination of the Vltava River by these relatively persistent chemicals in the surroundings of Prague industrialized agglomeration, chub (Leuciscus cephalus) was employed as a bioindicator. Validated gas chromatography- mass spectrometry method was used for fish sample examination. Polycyclic musks, represented by 1,3,4,6,7,8- hexahydro-4,6,6,7,8,8-hexamethyl-cyclopenta-(c)-2-benzopyran (galaxolide) and 1-(5,6,7,8-tetrahydro-3,5,5,6,8,8- hexamethyl-2-naphthalenyl)-ethanone (tonalide) were the most abundant representatives of this group; their levels in fillets were in the range of 1.7 to 105.9 lg/kg and 0.9 to 19.3 lg/kg wet weight, respectively. Nitro-musks, musk ketone, and musk xylene were also detected in most samples; nevertheless, their levels were lower, Ł 2 lg/kg. Significant contamination of resident fish was recognised in the local (en)
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