摘要
对比研究了3种土壤(新疆砂土、粘土和东北黑土)及其被石油不同程度污染后对水中重金属离子Pb2+的吸附作用。结果表明,3种原土壤及油污土壤对Pb2+的吸附均符合Langmuir等温式;原土壤上Pb2+的饱和吸附量为黑土>>粘土>砂土;在一定范围内,砂土、粘土中石油的存在对其吸附重金属离子Pb2+的能力影响较小,而黑土对Pb2+的吸附能力则随所含石油量的增大而迅速减少。
The three different soils,sandy soil,clay and northeast black soil are contrasted.Their absorption of heavy metal of Pb2+ in the soil polluted by petroleum are studied in the paper.It shows that the absorption of the three unpolluted soils and the three polluted soils conforms to Langmuir isothermal equality.The saturated absorption capacity of the unpolluted black soil is higher than clay's and the clay's is higher than the sandy soil's.The absorption ability is effected very little by the existence of petroleum for the sand soil and clay with the reducement of petroleum,but the absorption ability of black soil is reduced rapidly with the increasement of petroleum.
出处
《干旱环境监测》
2003年第2期67-69,共3页
Arid Environmental Monitoring
