free_sky 2008/05/29
Effect of Soil pH on Adsorption of Lead, Copper, Zinc, and Nickel1 Robert D. Harter2 ABSTRACT Lead, copper, nickel, and zinc adsorption by and desorption from pH-adjusted soils has been studied. Surface and subsurface horizon samples of two soils were equilibrated with varying amounts of Ca(OH)2 prior to metal addition. The amount of all four metals retained was dependent upon pH of the soil sample, with retention dramatically increasing above pH 7.0 to 7.5. With the exception of Ni, at least 70 to 75% of the retained metal was extractable in 0.01N HCl. Nickel was somewhat less extractable, with that sorbed by the highest pH soils being the least extractable. Based on subsequent extractability, the soils used appeared to have specific adsorption sites for Pb, Ni, and Cu but little or none for Zn. These studies cast some doubt on the concept of pH management for immobilizing heavy metals placed on the land in that sorbed metals were substantially extractable by 0.01M HCl, which has been used to estimate plant availability of soil ions. 第二篇已经没有全文下载了，只能看到摘要，要看可能只能去找纸质版的了。
maxwell 2008/05/26
lz这个不能通过馆际互借弄到么? 83年那个我们图书馆里有, 不过复印在扫描挺费劲的. 如果可以, 尝试一下馆际互借: 我们这里馆际互借个人花费不多, 因为学校出大部分:) 不行的话, 吭一声, 我帮你搞定.
free_sky
第5楼2008/05/29
Effect of Soil pH on Adsorption of Lead, Copper, Zinc, and Nickel1
Robert D. Harter2
ABSTRACT
Lead, copper, nickel, and zinc adsorption by and desorption from pH-adjusted soils has been studied. Surface and subsurface horizon samples of two soils were equilibrated with varying amounts of Ca(OH)2 prior to metal addition. The amount of all four metals retained was dependent upon pH of the soil sample, with retention dramatically increasing above pH 7.0 to 7.5. With the exception of Ni, at least 70 to 75% of the retained metal was extractable in 0.01N HCl. Nickel was somewhat less extractable, with that sorbed by the highest pH soils being the least extractable. Based on subsequent extractability, the soils used appeared to have specific adsorption sites for Pb, Ni, and Cu but little or none for Zn. These studies cast some doubt on the concept of pH management for immobilizing heavy metals placed on the land in that sorbed metals were substantially extractable by 0.01M HCl, which has been used to estimate plant availability of soil ions.
第二篇已经没有全文下载了，只能看到摘要，要看可能只能去找纸质版的了。
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