Open AccessThe presence of heavy metals in water and the muscle tissue of grayling (Thymallus thymallus) of the Una River
Author(s) -
Azra Bakrač,
Subha Džafić,
Radoslav Dekić,
Irma Ičanović
Publication year - 2020
Publication title -
agroznanje
Language(s) - English
Resource type - Journals
eISSN - 2233-0070
pISSN - 1512-6412
DOI - 10.7251/agren2003107b
Subject(s) - grayling , environmental chemistry , heavy metals , phosphorus , chemistry , water quality , organic matter , fish <actinopterygii> , ecology , fishery , biology , organic chemistry
Heavy metals belong to a group of substances, which, after reaching a natural habitat, can manifest various negative effects. This paper analyses heavy metals (Cu, Cd, and Pb) in the Una river and fish samples, whereby individuals of grayling (Thymallus thymallus) were used for analysis. The samples were taken at three locations at the Una river: Ripač, Hatinac, and Grmuša. Alongside with the examination of the content of heavy metals, quality of water was tracked, including the following parameters: temperature, pH, electrical conductivity, dissolved oxygen, suspended matter, BPK5, KPK – Cr, total nitrogen – N, total phosphorus P, sulphates, chlorides, nitrites – NO2, nitrates – NO3, fluoride, and heavy metals (Cu, Cd, and Pb). Besides the content of heavy metals, proteins, fats, water, carbohydrates, and mineral matter were found in the grayling fillets. Amount of heavy metals (Pb, Cu, and Cd) were under maximum allowed concentration (MAC).