The aim of this study was to determine the influence of refrigerate (post cooling) dropping waters on selected levels of elements in 3-month-old common carp organs and tissues at the Dolna Odra hydroelectric power station. Investigations took place twice: in the spring and autumn. The level of cadmium, nickel and zinc was examined in this study. Selected levels of elements were elevated with reference to the required standards of first and second-class quality waters. The content of the selected elements was compared with their level in the Odra River water. Based on the obtained results we claim that selected element levels were within the physiological standard range for this species. The water for breeding carp was in the second quality class and fulfills the European standards of common carp breeding.
The paper demonstrates concentration and distribution of mercury in selected elements of the Świdwie lake ecosystem: sediment, surface and rain water, fish tissues (gills, kidney, liver, muscles, alimentary tract and its contents-of rudd, perch, roach, white bream, and pike); duckweed, bladderwort; leaves, stems, and roots of reed and cattail.
Przeprowadzono analizą zawartości 16 wielopierścieniowych węglowodorów aromatycznych (WWA) w mięsnych i drobiowych artykułach spożywczych. W części próbek stwierdzono poziom BaP powyżej 1 µg/kg, tj. maksymalnej zawartości przyjętej przez EU dla żywności wędzonej.
The aim of the study was to determine the influence of cadmium sub-lethal intoxication doses (10 µg Cd · kg-1 body weight) on zinc levels in freshwater fish tissues, using the common carp as the experimental example. The 60-day experiment was divided into 8 stages during which organs and tissues were collected (liver, kidneys, skin, gills, alimentary tract and muscles). Zinc levels were determined in the collected samples at designated time periods. Statistically important changes in zinc concentrations were obtained. The performed experiment facilitated obtaining images of zinc level changes in cadmium poisoned carps during the detoxification process.