中文摘要：

采用平衡振荡法，研究黑龙江黑土对吐温类非离子表面活性剂（Tween20、Tween40、Tween60和Tween80）的吸附特征及影响因素。结果表明，在试验浓度范围内，吐温类表面活性剂在黑土上的吸附随着平衡质量浓度的增加而增加；各表面活性剂的吸附等温线均呈“S”型，可用Freundlich吸附模型来描述；在同一平衡质量浓度下，Tween20和Tween40在黑土中的吸附量高于Tween60和Tween80的吸附量；有机质含量高的土壤S1对表面活性剂吸附能力高于有机质含量低的土壤S2。通过H2O2氧化去除黑土中的有机质后，对表面活性剂的吸附量与原土相比变化不大，表明土壤矿物质和有机质都是吸附表面活性剂的重要成分。黑土对Tween80的吸附量随着温度的增加而增加，但随着体系pH值的增加而呈现逐渐下降的趋势。

英文摘要：

Batch adsorption experiments were used to investigate the adsorption of Tween series surfactants on black soils of Heilongjiang. Results showed that the adsorption amount on black soils increased sharply with increasing equilibrium concentrations of surfactants at 200-1 000 mg/L, and then increased slowly. The adsorption of four surfactants on black soils was characterized by ＂S＂ type isotherm and might be well described by Freundlich equation. Under the same condition, the adsorption amount of Tween20 and Tween40 were higher than that of Tween60 and TweenS0, and adsorption amount of surfactants in soils S1 was larger than that in soils S2 with lower content of organic matter. The black soils were efficiently in ab- sorbing the surfactants when organic matter was removed from the soils by H2O2, suggested that the organic matter and minerals of black soils were important components to adsorb Tween series surfaetants, and the adsorption of surfactants mainly depended on their combination. The adsorption amount of Tween80 on black soils increased with the increase of temperature, but decreased with increasing pH.