Nikelio ir chromo bioakumuliacijos atlantinių lašišų (Salmo salar L.) kūno audiniuose eksperimentiniai tyrimai

• Main Authors: Sauliutė, Gintarė, Grigelevičiūtė, Joana, Svecevičius, Gintaras, Idzelis, Raimondas
• Format: Article in Journal/Newspaper
• Language: Lithuanian; English
• Published: 2013
• Subjects: Water pollution; Fish; Salmo salar L; Nickel; Chromium; Bioaccumulation; MPA; Atlantic salmon; Salmo salar
• Online Access: http://lmavb.lvb.lt/LMAVB:ELABAPDB5995257&prefLang=en_US

The tests were carried out on artificially reared Atlantic salmon. Fish were exposed for 14 days to Ni and Cr solutions at a concentration corresponding to Lithuanian inland water standards (0.01 mg Ni/1 and 0.01 mg Cr/1). Heavy metals in fish muscle, liver, gills and kidney were determined by atomic absorption spectrophotometry method. The results showed that Ni was mainly accumulated in the muscle and Cr in the kidney. Although Ni and Cr levels in test fish increased significantly in comparison with control fish (approximately 3.5 to 4.4 times) the maximum-permissible-amounts (MPA = 0.5 mg Ni/kg and 0.3 mg Cr/kg; Hygiene Standard UN 54:2003) have not been exceeded. The results were compared with the previous year's studies under the same experimental conditions on five fishes: roach, perch, rainbow trout, stone loach and goldfish. It was found that different species differently accumulate Ni and Cr in their body tissues. The considerable amounts of Cr were accumulated in the muscle, gills and liver, and often exceeded the MPA. Meanwhile, Ni is more accumulated in the liver than in other body tissues of the fish.