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Bifenthrins Environmental Fate: An Insight Into Its Soil Sorption and Degradation Studies

机译:联苯菊酯的环境命运:深入了解其土壤吸附和降解研究

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摘要

To fully comprehend each pesticide's behavior and interactions with soil and the environment, a thorough and nuanced analysis of each one is thought necessary. In this study, 10 randomly selected heterogeneous soil samples, each with distinct characteristics, were subjected to sorption trials as well as disintegration tests using biodegradation, hydrolysis, and photolysis. For sorption tests, the batch equilibrium approach was used, which revealed a dependence on the soils' physicochemical characteristics. Bifenthrin's distribution coefficient (Kd) varied from 7.27 to 25.89 μg·ml−1, with R2 values varying from 0.92 to 0.99. Each soil physicochemical characteristic was associated with the various sorptive outcomes, which suggested an exothermic adsorptive reaction based on the negative thermodynamic values. The hydrolysis, soil-induced biodegradation, and photolysis processes had the shortest half-lives of bifenthrin, measuring 13.5 days, 12 days, and 121.5 days, respectively. According to these findings, bifenthrin has a moderate amount of binding and stability in soil, which makes partial decomposition of parent and daughter molecules challenging. This research advances our knowledge of bifenthrin's deteriorating processes and aids in the creation of cutting-edge strategies for ecological restoration using natural processes.
机译:为了充分理解每种农药的行为以及与土壤和环境的相互作用,有必要对每种农药进行彻底而细致的分析。在这项研究中,随机选择了 10 个具有不同特性的非均质土壤样品,进行了吸附试验以及使用生物降解、水解和光解的崩解试验。对于吸附测试,使用了批量平衡方法,这揭示了对土壤物理化学特性的依赖性。联苯菊酯的分布系数 (Kd) 在 7.27 到 25.89 μg·ml-1 之间变化,R2 值在 0.92 到 0.99 之间变化。每种土壤理化特征都与各种吸附结果相关,这表明基于负热力学值的放热吸附反应。水解、土壤诱导生物降解和光解过程对联苯菊酯的半衰期最短,分别为 13.5 天、12 天和 121.5 天。根据这些发现,联苯菊酯在土壤中具有适量的结合和稳定性,这使得母子分子的部分分解具有挑战性。这项研究加深了我们对联苯菊酯恶化过程的了解,并有助于创建利用自然过程进行生态恢复的尖端策略。

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