More has yet to be indicated on the adsorption and degradation processes, determining herbicides recycling in the environment. The sorption and degradation of 2, 4-D, affected by organic carbon (1.92–2.81%), soil clay (20–30%) and pH of the citrus orchards of Mazandaran province, Iran was investigated using HPLC equipped with UV detector for the identification and quantification of soil 2, 4-D. The adsorption (k_d) and degradation (K_deg) coefficients were determined using Freundlich and the first-degree kinetic equations. Gardens C (2.45 mL g⁻¹), and B (0.3 mL g⁻¹), with the highest (8.2 g day⁻¹) and least (2.7 g day⁻¹) degradation coefficients, had the highest and lowest K_d values. K_d variations with pH indicated higher adsorption of 2, 4-D in acidic pH. Due to the high presence of functional groups and soil biological activities, organic carbon affected the adsorption and degradation rates more effectively, which is of economic and environmental significance.

关于吸附和降解过程的更多信息，决定了除草剂在环境中的回收利用。使用配备紫外检测器的 HPLC 研究了伊朗马赞达兰省柑橘园受有机碳 (1.92–2.81%)、土壤粘土 (20–30%) 和 pH 值影响的 2, 4-D 的吸附和降解。土壤2、4-D的鉴定和量化。使用 Freundlich 和一级动力学方程确定吸附 (k _d ) 和降解 (K _{deg ) 系数。}花园 C (2.45 mL g ^-1 ) 和 B (0.3 mL g ^-1 ) 的降解系数最高（8.2 g day ^-1）和最低（2.7 g day ^{-1 ），K 值最高和最低}_d值。K _d随 pH 值的变化表明 2, 4-D 在酸性 pH 值中的吸附更高。由于官能团和土壤生物活性的高存在，有机碳更有效地影响吸附和降解速率，具有经济和环境意义。