日本産海洋生物のコバルト,セシウム,亜鉛濃度

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Skin, muscle, viscera and bone of various species of marine fishes were analysed by the neutron activation method to determine cobalt, cesium and zinc concentrations. Muscle contains much less cobalt and zinc than do the other tissues, whereas cesium is distributed rather uniformly in all of these tissues. The soft part of the short-necked clam showed much higher concentrations of the three elements than did fish muscle. Cobalt and zinc levels in shrimp (soft part and carapace), sea urchin (ovary) and sea cucumber (whole body) are higher than those in fish muscle, but the cesium level in these animals is somewhat lower than in any fish tissues. The concentration factors of cobalt, cesium and zinc were calculated for various tissues of animals by using the average concentrarion of the elements in sea water. Values of concentration factors for the animals analysed are in the range of 10 for cesium, 102 for cobalt and 103 for zinc with some exceptions.
公益社団法人日本水産学会の論文