噻吩磺隆对土壤吸附铜的影响农业论文.docVIP

噻吩磺隆对土壤吸附铜的影响 摘要 本文以污染较为普遍的铜和取自盘锦、土壤作为研究对象，重点研究了本论文通过等温静态吸附实验得出，种重金属的等温吸附曲线都可Freundlich方程进行拟合，说明土壤对重金属的吸附与平衡液中重金属的浓度有关的吸附量而增大关键字：土壤铜吸附 he Effect of thifensulfuon on the Sorption of copper in Soil Abstract Thifensulfuron is often used in agricultural production to a pesticide, and heavy metal copper is through the various channels into the soil, but also through the food chain and threaten human health and survival. Therefore, the study of heavy metals in the soil adsorption, desorption, research on soil thifensulfuron competitive adsorption of Cu adsorption on the prevention of environmental pollution and restoration of contaminated soil has been of great theoretical significance. In this paper, the more common copper pollution from Panjin, Changbai three kinds of soil for the study, focus on how thifensulfuron affect both soil Cu adsorption, changes in conditions in which the question of how to influence. In this paper, the more common copper pollution from Panjin, two kinds of soil for the study of Changbai Mountain, focuses on the time of thifensulfuron, pH, pesticide concentration, the order in terms of pesticide to add two soil copper sorption. The experiment results of isothermal adsorption showed that the copper sorption isotherm could be fitted by Freundlich equation, indicating the adsorption of heavy metals in soil solution and the equilibrium concentration of heavy metals. Cu adsorption capacity increased with time, reaching up to 18 hours after the basic adsorption. Cu adsorption as the soil pH value increased while the first increases and then straight into a stable period and finally plummeting. Thifensulfuron, Cu co-exist in the soil, the competitive adsorption. Aliphatic copper solution, it helped thifensulfuron more copper adsorption sites, thereby increasing its adsorption capacity of soil, aliphatic thifensulfuron, the copper could not account for common adsorption sites, thus reducing the adsorption capacity. ? Keywords: Soil; Thifensulfuron;