| 摘要: |
| 介绍并用法测定几种不同生物气候带土壤溶液中 Cu,Pb,Cd 的活度及计算络合数值,并进行综合评价。研究了调节土壤 pH 值及施加改良剂 CaCO3及 K2HPO4对 Cd 在土壤溶液中的活度及络合敬值的影响。结果表明:潜育泥炭土、碳酸盐褐土、浅色草甸土等北方土壤中 Cu,Pb,Cd 的活度较低,络合数值较高;而红壤、黄棕壤等南方上壤溶液中却得出相反的结果。同种供试土壤溶液对 Pb 的络合数值高于 Cu。改变 pH 值使不同土壤溶液对 Cu 的活度及络合数值影响不同。Cd 污染使大部分土壤溶液中 Cd 的活度升高,络合数值降低,而施加改良剂 CaCO3与 K2HPO4却使大部分土壤溶液中 Cd 的络合物数值增加,但较对照土壤仍偏低,为土壤 Cd 污染的调控与治理提供依据。 |
| 关键词: 土壤 络合物 活度 铜 镉 |
| DOI： |
| 投稿时间：1993-07-27 |
| 基金项目: |
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| Effects of Several Soil Solutions on the Activities of Cu,Pb,Cd and Complexation Character |
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| Abstract: |
| Complexation character of soil solution is the total amount of complex compounds of certain metallic ion formed with all complex ions.mainly organic,existed in soil solution.Activities of Cu.Pb. Cd and complexation character values were influenced by complex ions in soil solution from several soils prevailed in different bio-climatical conditions and effects of pH and application of certain meliorating a- gents(such as CaCO_3 and K_2HPO_4)on the activities of Cu,Pb,Cd and complexation character values of di... |
| Key words: complex soil solution activity complexation character |
