中文摘要：

用Tessier连续提取法进行实验，研究不同种类、不同浓度的无机钠盐对不同形态的铅离子浓度的影响．研究表明，不同种类的可溶性无机钠盐对土壤中铅的不同形态分布的影响有明显的差异．其中NaCl主要影响铅的碳酸盐结合态、铁锰氧化态，随着溶液浓度的增加，这些结合态的铅含量增加．Na2SO4主要影响铅的可交换态、碳酸盐结合态、铁锰氧化态，当浓度增加后使这些结合态的铅含量减少，有机态和残余变化不明显．Na2CO3主要影响铅的可交换态和碳酸盐结合态，它使可交换态和碳酸盐结合态铅的含量显著减少，使铁锰氧化态铅的含量几乎不变，有机态和残渣态含量小幅减少．

英文摘要：

To study the influences of different soluble inorganic salts upon lead forms in soil, the salts were irrigated into batches of soil samples by setting eontrastive experiments on the basis of Tessier sequential extraction procedure. The reslts showed that all the three salts were able to influence the forms of lead in soil. The addition of NaC1 mainly influnenced the carbonate content of lead and the Fe-Mn oxidation form. The carbonate content of lead and the Fe-Mn oxidation form increased with the increasing of the concentration of NaC1. The addition of Na2SO4 mainly influnenced the content of exchangeable lead and carbonate content of lead and the Fe-Mn oxidation form. The content of three forms of lead decreased when the addition of Na2SO4 increased, while organic lead and residual lead changed unapparently. When Na2CO3 was added into the samples, the content of exchangeable lead and carbonate content of lead de- creased dramatically. The Fe-Mn oxidation form remained the original level. Organic lead and residual lead decreased slightly.