ABSTRACT

Glyphosate adsorption pattern is important for determining its environmental fate. Oxisol soil systems adsorb maximum glyphosate in the presence of biochar, however, the mechanism was not known. This article provides information concerning the role of surface charge in the case of Oxisol soil systems. Potentiometric titrations were done to calculate the surface charge in the case of Oxisol soil systems. Maximum adsorption of glyphosate in the Oxisol soil systems in the presence of biochar was due to an increase in net positive surface charge. This finding is of great importance to understanding the mechanism of herbicide soil interactions.

摘要

草甘膦吸附模式对于确定其环境归宿很重要。Oxisol 土壤系统在生物炭存在的情况下最多吸附草甘膦，但其机制尚不清楚。本文提供有关表面电荷在 Oxisol 土壤系统中的作用的信息。在 Oxisol 土壤系统的情况下，进行电位滴定以计算表面电荷。在存在生物炭的情况下，Oxisol 土壤系统中草甘膦的最大吸附是由于净表面正电荷的增加。这一发现对于了解除草剂土壤相互作用的机制具有重要意义。