駿河湾および東北沖で採取された深海生魚介類の微量元素蓄積

概要

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Trace element concentrations (Ti, V, Cr, Mn, Co, Cu, Zn, Se, Sr, Zr, Mo, Ag, Cd, Cs, Ba, W, Hg, Tl, Pb and Bi) in the liver, hepatopancreas and muscle of deep sea organisms including myctophid fishes, crustaceans and cephalopods collected from Suruga Bay and off Tohoku in the western North Pacific, Japan, were determined. Tissues and species specific accumulations of trace elements were observed in deep-sea organisms. From the results of comparison between both regions, V, Cr, Mn, Cu, Zn, Sr, Ag, Cd, Cs, Ba and Hg concentrations in the organisms from western North Pacific were higher than those from Suruga Bay. By contrast, Co and Pb concentrations in the tissues from Suruga Bay were higher than those from western North Pacific. Vanadium, Co, Se, Sr and Ba levels accumulating in the muscle of deep-sea organisms were higher than those of shallow-water fishes collected from Japanese coastal waters, although Cr, Cs, Pb and Bi levels in deep-sea organisms were low. Vanadium, Se, Sr, Ba and Bi concentrations in the organisms might be affectable to habitat levels of these elements. On the other hand, almost all essential elements analyzed in the deep and surface sea organisms were likely to keep the stable levels by homeostasis.
日本地球化学会の論文
2002-12-20