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Meng Jiao¹, Yijin Wang², Fei Yang³

¹College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China; School of Marine Sciences, Guangxi University, Nanning 530004, China.

The Science of the total environment

|October 18, 2023

概括

空气中的微塑料 (MPs) 积聚在植物叶子上,显示出每天显著的变化,并根据植物类型而异. 叶子结构,特别是口腔,在这种动态拦截过程中发挥着关键作用.

科学领域:

环境科学环境科学
植物生物学植物生物学
生态毒理学生态毒理学

背景情况:

植物叶子作为空气中的微塑料 (MPs) 的沉池.
传统的颗粒物吸附模型对于叶子MP的相互作用是不够的,因为MP的独特特性.
了解叶子对MP的拦截对于评估陆地植物对空气污染的暴露至关重要.

研究的目的:

为了研究植物叶子对微塑料的拦截的日间波动和物种间差异.
探索叶子微形结构在微塑料拦截中的作用.
挑战微塑料在叶子上的积累的静态平衡模型.

主要方法:

在南宁进行了为期7天的实地研究,以量化叶子拦截的MPs.
在不同植物物种 (针叶树,树木,灌木) 中分析了微塑料的丰度和特征.
部分最小平方路径建模用于识别影响MP拦截的因素.

主要成果:

叶子截断的MP丰度表现出剧烈的日间波动 (CV=0.459) 和显著的物种间差异 (CV=0.353).
针叶树拦截了比树木更多的MP,树木拦截了比灌木更多的MP.
胃口变异和分歧被确定为分别是白天和物种间变化的主要驱动因素.

结论:

叶子对微塑料的拦截是一个动态的过程,而不是静态的平衡.
叶子的微形结构,特别是口腔,显著调节了空气中的微塑料的拦截.
这项研究提高了对有关空气污染物的植物环境相互作用的理解.

关键词:

每天的波动是每天的波动.拦截机制的拦截机制叶子微观形态结构叶子微观形态结构微塑料是一种微塑料.陆地植物 (树木)

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