Heavy metals and essential elements in Commerson's dolphins {Cephalorhynchus c. commersonii) from the southwestern South Atlantic Ocean

摘要

A survey of the elemental contents of K, Mg, Mn, Na, Cl, Br, Cs, Co, Rb, Fe, Zn, Al, Ti, V, As, Ag, Au and Cd in liver, kidney and muscle was performed in specimens of Commerson's dolphins (Cephalorhynchus c. commersonii) from subantarctic waters. The concentrations were determined by Instrumental Neutron Activation Analysis and the specimens derives from animals incidentally caught in artisanal fishing nets. Liver had the highest concentrations of Fe, 897(79)μgg-1 DW (dry weight) (average; standard deviation in parenthesis), kidney had the highest Cd, 35 (24) μgg-1 DW; Cl, 9,200