La在模拟水生态系统中的动力学行为  

KINETIC BEHAVIOUR OF La IN THE SIMULATED AQUATIC ECOSYSTEM

作　　者：胡勤海[1] 叶兆杰[1] 王寿祥[2] 胡志强[1] 

机构地区：[1]浙江农业大学环保系,杭州310029 [2]浙江农业大学核农所,杭州310029

出　　处：《应用与环境生物学报》1998年第3期267-270,共4页Chinese Journal of Applied and Environmental Biology

基　　金：浙江省自然科学基金

摘　　要：采用140La放射示踪技术，研究了稀土元素镧（La）在模拟水生态系统各组分中的迁移分布规律．并建立了相应的数学模型．结果表明，La在模拟水生态系统各组分中的积累率大小依次为：金鱼藻＞底泥＞螺蛳＞鱼，La在系统内的动态变化规律可用封闭分室模型来描述．The rules of transportation and distribution of lanthanum in each component of simulated aquatic ecosystem were studied by using tracer isotope140La, and mathematical models for simulating the behaviour of lanthanum were built. The results showed thai the contents of lanthanum in each component of simulated aquatic ecosystem were as: honewort > sediment > snail > fish, and the kinetic behaviour of lanthanum in the simulated aquatic ecosystem could be described by closed-five-component models.

关 键 词：稀土元素 镧 水生态系统 动力学模型 

分 类 号：Q178.11[生物学—水生生物学]