土壤和土壤矿物对氯磺隆的吸附

用批量法研究了人工合成的铁、铝氧化物以及砂页岩发育的红壤对氯磺隆的吸附。结果表明: 1)在相同的条件下,氯磺隆在铁、铝氧化物和砂页岩发育的红壤中的吸附量随其浓度的升高而增加,氯磺隆吸附量的顺序为:铁氧化物<铝氧化物<红壤; 2)氯磺隆在铁、铝氧化物和砂页岩发育的红壤中吸附量随pH值的升高而减小。这些情况均与矿物及其组成有关。

Absorption of Chlorsulfuron by Soil and Soil Minerals

A study on absorption processes of chlorsulfuron in two artificial-synthesized minerals, Fe and Al oxides, and a red soil derived from sand-shale has been carried out with batch method. The results showed that 1) In the same conditions, the amount of the absorption in the clay minerals and soil increased with the increase in the concentration of chlorsulfuron. The absorption by different materials followed the order: Fe oxide < Al oxide < soil. 2) The amount of absorption by the clay mineral and soil decreased with the increase in pH of the solution. All these phenomena are closely related to the composition and properties of the minerals and the soil.