【摘要】 用平衡吸附法研究了3种供试样品(广州赤红壤、铝氧化物、针铁矿)对苄嘧磺隆的等温吸附,同时研究了pH及Zn2+对供试样品吸附苄嘧磺隆的影响。结果表明,在实验所用的苄嘧磺隆的浓度范围内,供试样品对苄嘧磺隆的吸附量各不相同;供试样品吸附苄嘧磺隆的量随溶液pH及Zn2+浓度的改变而变化,且影响不尽相同,这主要与供试样品的组成有关。更多还原

【Abstract】 The effects of pH and Zn~ 2+ on adsorption of bensulfuron-methyl(BSM)on Guangzhou soil (GZ-Soil), goethite (an iron oxide) and Al oxide were studied. Within the range of BSM concentrations studied, the capacities for BSM increased with the equilibrium concentrations. Al oxide had the highest capacity for BSM, followed by goethite and then GZ-Soil. The BSM capacities decreased with increasing pH of the solution. The presence of Zn~ 2+increased the BSM capacities; its effect was different for the three adsorbents because their chemical compositions were different.更多还原