Evaluation the metal content of copper (Cu), manganese (Mn) and zinc (Zn) in in fish species Gerres filamentosus (Cuvier, 1829) in Gianh river at Quang Trach district, Quang Binh province

Abstract

In recent years the fish consumption advisories for the population has become of great concern. The flame atomic absorption spectrometry (F-AAS) was applied to determine the copper, maganese and zinc content in fish species Gerres filamentosus (Cuvier, 1829) from Gianh river at Quang Tranh distric, Quang Binh province. This method had a high repeatability with RSD < 4.3%, the recovery from 94 % to 106 %, and low limit of detection. Our results showed that the average concentration of copper, maganese and zinc in fish species Gerres filamentosus (Cuvier, 1829) were 0.388 ÷ 0.601 mg/kg fresh; 0.261 ÷ 0.321 mg/kg fresh and 7.325 ÷ 10.120 mg/kg fresh, respectively. These concentration were within the allowed limits according to the regulation No. 46/BYT 2007. Our results give important finding about the consumption limits on certain metals, especially for Cu, Mn and Zn, all for minimizing potential health risks in population and related risk-based consumption limits for adults and children.