Abstract Studies on seasonal distribution characteristics of polycyclic aromatic hydrocarbons (PAHs) in Salix matsudana leaves covering its annual life cycle were carried out in order to evaluate plant leaf response sensitivity to air pollution. Salix matsudana leaves were collected throughout different development phases of plant leaf inclusive of bud break to fallen leaves, covering from spring (May) to autumn (November). Simultaneously, particle and gas samples were collected using a high volume air sampler. Seven different PAHs were determined simultaneously in these samples. The temperature dependence of the partitioning of PAHs in air and plant leaves was investigated and the results were incorporated into a mathematical model. The measured plant/air partition coefficients have been found to be exponentially proportional to the reciprocal temperature, in agreement with theoretical expectations. Furthermore, in order to define the influence of different parameters on PAH adsorption on plant leaves, area and lipid leaf content were also measured. Results demonstrated that temperature plays a very important role in PAHs partitioning and that this value should be carefully considered during sampling, in order to obtain the best correlation between PAHs concentration in air and leaves.

中文翻译：

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Salix matsudana叶生物监测多环芳烃：与相关空气含量的比较和环境参数影响的评估

摘要 为了评价植物叶片对空气污染的响应敏感性，开展了覆盖一年生命周期的松叶柳叶片中多环芳烃（PAHs）季节分布特征的研究。从春季（5 月）到秋季（11 月），在植物叶片的不同发育阶段（包括萌芽到落叶）收集了松叶柳叶。同时，使用大容量空气采样器收集颗粒和气体样品。在这些样品中同时测定了七种不同的 PAH。研究了空气和植物叶片中多环芳烃分配的温度依赖性，并将结果纳入数学模型。已发现测量的工厂/空气分配系数与倒易温度成指数比例，与理论预期一致。此外，为了确定不同参数对植物叶片 PAH 吸附的影响，还测量了面积和叶片脂质含量。结果表明，温度在 PAHs 分配中起着非常重要的作用，在采样过程中应仔细考虑该值，以获得空气和树叶中 PAHs 浓度之间的最佳相关性。