Scholarlink

<p>A laboratory study was conducted to assess the sorption and leaching potential of Imidacloprid in common agricultural soils (clay, sandy loam) of Loukkos perimeter Northwest of Morocco, using batch sorption and disturbed soil columns experiments. Adsorption–desorption phenomenon was studied using three adsorption models, namely Freundlich, Langmuir, and Redlich–Peterson. The results indicated that Imidacloprid sorption was best described by the Freundlich model (R2 &gt; 0.998) and that Imidacloprid sorbed more strongly to clayey soil A than to sandy loam soils S1and S2. Imidacloprid adsorption showed a direct correlation with soil organic matter (OM) and clay levels. Alghough the limited number of soils did not allow for formal statistical modelling, the significant increase in K<sub>d</sub> and K<sub>f</sub> values in soils richer in OM and clay indicates that these two properties play a major role in governing Imidacloprid adsorption in the studied profiles<b>.</b> Column transport study revealed concentrations of Imidacloprid in the leachate at (71%), (69.4%), and (27%) for S2, S1 and A soils, respectively. According to the groundwater ubiquity index (GUS), Imidacloprid exhibited moderate mobility in soil A, whereas its mobility in soils S1 and S2 was considered high, suggesting a significant risk of surface and groundwater contamination, mainly for S1 and S2. This could ultimately have significant consequences for human health, especially since this groundwater is used for drinking and irrigation in the Loukkos region. Therefore, to minimize the risk of Imidacloprid leaching into soils, it is necessary to develop low application rates to ensure both environmental protection and cost-effective use of the insecticide. Moreover, the sustainable use of pesticides requires continuous and multidimensional monitoring to contribute to ecosystem preservation. Therefore, developing lower application rates for Imidacloprid is essential to minimize the risk of leaching in soils, ensuring both environmental safety and economical use of these insecticides. Moreover, maintaining pesticide use requires continuous and comprehensive monitoring to preserve ecosystem integrity.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Adsorption–Desorption Behavior and Leaching Potential of Imidacloprid in Mediterranean Soils

  • 期刊论文

  • 发表日期：

    2026年3月24日

查看全文
  • Fatima Zohra Znagui,
  • Mohamed Chabbi,
  • Mohamed Abbou,
  • Mohamed Benicha

摘要

A laboratory study was conducted to assess the sorption and leaching potential of Imidacloprid in common agricultural soils (clay, sandy loam) of Loukkos perimeter Northwest of Morocco, using batch sorption and disturbed soil columns experiments. Adsorption–desorption phenomenon was studied using three adsorption models, namely Freundlich, Langmuir, and Redlich–Peterson. The results indicated that Imidacloprid sorption was best described by the Freundlich model (R2 > 0.998) and that Imidacloprid sorbed more strongly to clayey soil A than to sandy loam soils S1and S2. Imidacloprid adsorption showed a direct correlation with soil organic matter (OM) and clay levels. Alghough the limited number of soils did not allow for formal statistical modelling, the significant increase in Kd and Kf values in soils richer in OM and clay indicates that these two properties play a major role in governing Imidacloprid adsorption in the studied profiles. Column transport study revealed concentrations of Imidacloprid in the leachate at (71%), (69.4%), and (27%) for S2, S1 and A soils, respectively. According to the groundwater ubiquity index (GUS), Imidacloprid exhibited moderate mobility in soil A, whereas its mobility in soils S1 and S2 was considered high, suggesting a significant risk of surface and groundwater contamination, mainly for S1 and S2. This could ultimately have significant consequences for human health, especially since this groundwater is used for drinking and irrigation in the Loukkos region. Therefore, to minimize the risk of Imidacloprid leaching into soils, it is necessary to develop low application rates to ensure both environmental protection and cost-effective use of the insecticide. Moreover, the sustainable use of pesticides requires continuous and multidimensional monitoring to contribute to ecosystem preservation. Therefore, developing lower application rates for Imidacloprid is essential to minimize the risk of leaching in soils, ensuring both environmental safety and economical use of these insecticides. Moreover, maintaining pesticide use requires continuous and comprehensive monitoring to preserve ecosystem integrity.