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厦门西港赤潮发生区可溶性硅酸盐的分布特性 总被引:2,自引:0,他引:2
根据1987年厦门西港赤潮综合调查的部分资料,阐述了该海区的SiO^2-3Si浓度水平,探讨了平面分布、季节变化和周日变化规律与浮游植物消长的关系以及SiO^2-3-Si的来源。结果表明,厦门西港水体中可溶性硅酸盐的年平均浓度为42.5μmol/dm^3,表层高于底层;明显高于福建海岸带和台湾海峡西部海区,含量较丰富。 相似文献
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1. The adsorption action of basic zinc carbonate adsorbent on uranium in natural seawater can be expressed with the following formula of adsorption isotherm:C=k(U*)n = 8.51× 10-1(U*)0.49,where C is the concentration of uranium on adsorbent; U* is content of uranium in natural seawater employed.2. when the quantity of basic zinc carbonate adsorbent (T) is constant, with the increase of natural seawater quantity through the adsorption column (G), also increased are the adsorption content of uranium of the adsorbent (U), the concentration of uranium on the adsorbent (C) and the concentration of residual uranium (C0*) in natural seawater after adsorbing uranium, while the rate of recovery of uranium (R) is decreased. With the increase of (G) the coefficient of distribution (Kd) decreases to a certain value and then a little rises again. 相似文献
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厦门西港筼筜湖排污口区底质环境要素的分布 总被引:1,自引:0,他引:1
本文报道1995年8月厦门西港筼筜湖排污口区底质调查监测结果。Cu、Pb、Zn、Cd、Hg、S2、oil、org.等环境要素平均含量分别为:34.6、74.5、140.3、1.96、0.096、315.6、104.5(×10-6m/m)、1.71×10-2(m/m)。超标率分别为:50.0%、100.0%、100.0%、100.0%、0.0%、12.5%、0.0%、0.0%。Cu、Hg、S2-、oil、org.、Eh等环境要素极值出现在排污口(4号站),以其为中心呈扇形状向海方向逐渐降低,这些污染物来自筼筜湖,对局部海域造成污染。与1982年比较有增加趋势。 相似文献
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An account is given of the thermodynamical characteristics of the adsorption of uranyl complex ions on hydrous titanium oxide (HTO) in NaCl-NaHCO3 solution and in seawater. Determined are the adsorption isotherms and the adsorption density in various pH. The contribution of each component to the adsorption density, the adsorption free energy ΔGads,t, the coulostatic energy ΔGcoul,t. and the cqemisorption potential energy Gchem. t are estimated. The average free energy ΔGads enthalpy change, ΔHads, and entropy change, ΔSads, of the adsorption in this system are -7.33 kcal/mol, 6.30 kcal/mol and 45.7 cal/mol K respectively. It is hereof concluded that the complex chemisorption process is spontaneous and thermonegativc. 相似文献
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