论文部分内容阅读
探索了~(89)Sr在青紫泥、小粉土和红黄壤中的吸附。结果表明,~(89)Sr进入淹水土壤中之后,将迅速地被土壤吸附而达到吸附平衡,其动态变化规律为:小粉土(?)_1=682.47(1—e~(-3.9337t),红黄壤(?)_2=554.56(1—e~(-2.9856t),青紫泥(?)_3=718.81(1—e~(-4.8244t)。可见,它们达到吸附平衡的时间,小粉土约2.0d,红黄壤约2.5d,青紫泥约1.7d。它们的吸附率皆在50％以上;同时还求出了~(89)Sr在三种土壤中的分布系数:青紫泥为3.43cm~3/g、小粉土2.53cm~3/g、红黄壤1.54cm~3/g;因此,就它们吸附~(89)Sr能力来说,青紫泥>小粉土>红黄壤。
The adsorption of ~ (89) Sr in purple purplish soil, small silt and reddish yellow soil was explored. The results show that ~ (89) Sr enters the submerged soil quickly and then reaches the adsorption equilibrium by soil adsorption. The dynamic change law of ~ (89) Sr is as follows: small silt (?) _1 = 682.47 (1-e ~ (-3.9337t ), Red-yellow soil (?) _2 = 554.56 (1-e ~ (-2.9856t)), purple brucite (-3) = 718.81 (1-e ~ (-4.8244t) Silt about 2.0d, reddish yellow soil about 2.5d, brucite about 1.7d. Their adsorption rates are above 50%; also found the 8989 Sr distribution coefficient in the three kinds of soil: purple purple 3.43cm ~ 3 / g, small silt 2.53cm ~ 3 / g, and reddish yellow soil 1.54cm ~ 3 / g. Therefore, for their ability to adsorb ~ (89) Sr,