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本文对 110 m Ag在海洋环境中的化学形态和在底泥上的吸附行为及在海洋生物中的浓集状况进行了研究。结果表明 ,110 m Ag在海水中以110 m Ag+ ∶ 110 m Ag Cl2 -≈ 10 -5存在 ,且当 [Ag+ ][Cl-]达到 Ag Cl的溶度积 (1.56× 10 -10 )时便生成 Ag Cl沉淀。海水中的 110 m Ag在底泥上的吸附系数随温度的升高或固液体积比增大而减小 ,尤其是受水质影响很大 ,海水中 110 m Ag在底泥中的吸附系数 (10 2 )比淡水中低两个量级。海洋生物对海水中的 110 m Ag有较强的浓集作用 ,依生物种类不同其生物累积因子的量级为 10 2～ 10 4。
In this paper, the chemical morphology of 110 m Ag in marine environment and its adsorption behavior on sediment and its concentration in marine organisms were studied. The results show that 110 m Ag exists in seawater with 110 m Ag +: 110 m Ag Cl2 - ≈ 10 -5, and when [Ag +] [Cl-] reaches the solubility product of AgCl (1.56 × 10 -10) AgCl precipitate is formed. The adsorption coefficient of 110 m Ag in seawater decreases with the increase of temperature or volume ratio of solid to liquid, especially influenced by water quality. The adsorption coefficient of 110 m Ag in sea water in sediment 10 2) Two orders of magnitude lower than fresh water. Marine organisms have a strong concentration effect on 110 m Ag in seawater, and their bioaccumulation factors are in the order of 102 to 104 depending on their biological species.