盐度对海水中^(134)Cs行为的影响  

EFFECTS OF SALINITY ON BEHAVIOR OF 134 Cs IN SEA WATER

作　　者：徐寅良[1,2] 陈传群[1,2] 陈鹤鑫[1,2] 陈凯旋[1,2] 

机构地区：[1]浙江农业大学原子核农业科学研究所 [2]浙江农业大学农药环境毒理研究所

出　　处：《环境科学学报》1997年第2期220-226,共7页Acta Scientiae Circumstantiae

摘　　要：Ｃｓ在海水－底质系统中的转移遵循一级反应动力学模式，盐度能抑制底质对１３４Ｃｓ的吸附率；海藻能迅速累积海水中的１３４Ｃｓ；盐度对海洋生物累积１３４Ｃｓ有明显的影响，这种影响可用指数函数来表达．由于拮抗作用，盐度能抑制海洋生物对１３４Ｃｓ的累积；１３４Ｃｓ在共生体系中的分配是不均匀的，底质的加入可吸附海水中４０％左右的放射性，而海洋生物只累积１％左右．It was found in this study that the variation of 134 Cs in the sea water substrate system follows the model of first order reaction kinetics. The salinity can inhibit the adsorption rate of 134 Cs by substrate. Marine algae can fast accumulate 134 Cs from the sea water. The salinity can obviously effect the accumulation of 134 Cs by marine life. The effect can be described by an exponential function. Because of the antagonism, the distribution of 134 Cs was not even in the ecosystem. The substrate can adsorb about 40% radioactivity and the marine lives can only accumulate 1%.

关 键 词：^134CS 盐度 海水 海洋生物 底质 行为 吸附累积 

分 类 号：X837[环境科学与工程—环境工程]