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本文研究了人工小生境中~(59)Fe在海水,底质与海洋生物间的转移以及在藻类,罗非鱼、对虾、毛蚶等生物体内的积累、分布和代谢。结果表明,~(59)Fe在海水中主要是以颗粒形式存在,悬浮物对它有高的浓集系数,底质、藻类对~(59)Fe的浓集作用,24 h内达到动态平衡。罗非鱼和毛蚶的肠道、消化腺及对虾的内脏等组织器官对~(59)Fe的浓集系数很高,但排出也很快,是~(59)Fe在这些生物体中代谢的紧要器官。~(59)Fe在生化物质里的分布就总量看,主要集中在蛋白质,其次是DNA,就结合能力而言,DNA大于蛋白质,而有机酸均为最少。
In this paper, the migration, distribution, and metabolism of ~ (59) Fe in seawater, sediment and marine organisms and in algae, tilapia, shrimp and catfish were studied in artificial niche. The results showed that ~ (59) Fe was mainly in the form of particles in seawater. The concentration of ~ (59) Fe in seawater was high, and the concentration of ~ (59) Fe in the sediment reached the dynamic equilibrium within 24 h . The concentration of ~ (59) Fe in tissues and organs such as intestine, digestive gland and shrimp of tilapia and shrimps was high, but the excretion rate was very fast, which was due to the metabolism of ~ (59) Fe in these organisms Critical organs. ~ (59) The distribution of Fe in biochemicals is mainly focused on protein, followed by DNA. In terms of binding capacity, DNA is larger than protein while organic acid is the least.