中文摘要：

通过振荡吸附半衡试验，研究了蒙脱石、凹凸棒石、竹炭、木炭对阿特拉津的吸附行为，讨论了pH值、离了强度对吸附的影响，并考察了吸附剂表面的Zeta电位变化。结果表明，几种吸附剂对阿特拉津的吸附均符合Freundlich方程：竹炭、木炭的吸附能力明显高于蒙脱石和凹凸棒石。吸附剂对阿特拉津的吸附量随着悬液离子强度的增加而增加，在悬液pH一定（pH=6），离了强度为10-3mol／LNaNO3时，蒙脱石、凹凸棒石对阿特拉津的吸附量分别为538．30、609．68mg／kg，当离了强度增加为100mol／L时，吸附量分别增至611．26、731.63mg／kg；当离了强度由10-3增至10-1mol／LNaNO3时，竹炭、木炭对阿特拉津的吸附量有较多增加。当悬液pH往3～8范围时，几种吸附剂表面均带负电荷，其Zeta电位值随着pH的增加而增加，随离子强度的增加而减小。悬液离了强度一定时，随着DH的增加，吸附阿特抽律后吸附剂表面Zeta电位变化不显著。研究结果何助于从机理上解析吸附剂对有机污染物的吸附行为。

英文摘要：

The adsorption of atrazine onto montmorillonite, attapulgite, bamboo-charcoal and charcoal were studied by using adsorption equilibrium experiments, the effects of pH and ionic strength were investigated and the Zeta potential of these adsorbents were analysed, It showed that the adsorption of atrazine onto those adsorbents were well fitted by the Freundlich isotherm and bamboo-charcoal and charcoal had much higher adsorption capacity to atrazinc than montmorillonite and attapulgitc, The adsorption quantity of atrazinc onto adsorbents increased with the increase of ionic strength of bulk solution, that was, it increased from 538.30 to 6111 .26 mg/kg and from 609.68 to 731 .63 mg/kg when the ionic strength was increased from 10.3 to 10-2 mol/L NaNO3 for montmorillonite and attapulgite, respectively. However, the adsorption quantity dramatically increased from 1439.89 to 1714.29 mg/kg when the ionic strength was increased from 10-3 to 10-1 mol/L NaNO3 for bamboo-charcoal. As the pH of bulk solution ranging from 3 to 8, the Zeta potentials of montmorillonite, attapulgitc, bamboo-charcoal and charcoal suspensions possessed a negative value, indicating the pHkp （isoclectric point） of the above adsorbents lower than 3. Meanwhile, the Zeta potentials became more negative with the increases of pH and decreases of ionic strengths of bulk solution. The results would be helpful to understand the adsorption mechanisms of organic pollutions onto adsorbents.