Abstract
The content of essential (Cu, Zn, Fe) and non-essential (Cd, Pb, Ni) elements, which are trace and heavy metals, in the organs and tissues of one of the most popular and consumer-preferred species of Pacific salmon – sockeye salmon, one of the three most significant objects in the salmon fishery in the Far East of Russia, caught in the waters of two gulfs from the eastern Kamchatka – Avacha Gulf and Kamchatka Gulf. Emphasis is made on reproductive products – caviar and testes of fish. Element concentrations were determined by the atomic absorption method on a Shimadzu AA-7000 spectrophotometer on flame and flameless atomizers from sample mineralizates obtained by their decomposition with concentrated HNO3 grade extra pure in a MARS 6 microwave complex, using standard samples with known concentrations. Statistical data processing was performed in MS Excel. It was found that the concentration of copper in eggs was 10 times higher than in the testes, the levels of Zn in the gonads of fish differed by a factor of 2, and the differences in the amount of Fe were less pronounced. No patterns were observed in the distribution of Cd, Ni, and Pb in the gametes of fish. The content of microelements, except for Pb, as a rule prevailed in the liver.
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