基于元胞自动机的茶叶农药残留降解演化过程

The study of pesticide degradation on the basis of cellular automata model

为从分子水平阐明生产线上茶叶农残的生成途径和转化规律,采用元胞自动机模型数值分析农残降解演化过程。首先,构造未发生降解反应的农残颗粒三维微观结构;其次,以降解一级动力学方程为转化原则,推导出农药残留降解机理的动力学微分方程;最后,基于该动力学微分方程,利用元胞自动机算法建立农药残留降解模型,仿真分析农残降解过程的动力学规律,预测代谢物类型和含量,并将整个演化过程可视化。结果表明:在元胞演化过程中,农药残留量随着时间的变化曲线和动力学微分方程模型确定的农药残留量的变化曲线相吻合,同时也表现出一定的随机性。本研究可为高端茶叶加工装备的设计提供理论指导。

In order to reveal the generation and transformation of pesticide residues on the molecular level,the degradation process of pesticide residues are analyzed by numerical method with the dynamic differential equation on the basis of cellular automat theory.Based on the dynamic differential equation,the model of pesticide residue degradation was established by cellular automata algorithm,and the whole evolution process was visualized.The results show that the curve of pesticide residues with time in the cell evolution process well match the curve of pesticide residues determined by the dynamic differential equation model,and show a certain randomness.The theory guidance will be given for high-level tea processing equipment design with this research.