In this study, ambient air and olive tree components (leaf and branch) were simultaneously collected and analyzed for polycyclic aromatic hydrocarbons (PAHs) to investigate their levels and accumulations, temporal variations, possible sources, air-plant partitioning and cancer risks for 12 months. During the sampling period, total of 14 PAH (∑₁₄PAH) concentrations measured in the olive leaves (dissolved and particle phase) and braches (1- and 2-year-old) were 593±472, 81±67, 558±273 and 316±213 ng/g dry weight (DW), respectively. Similarly, the average ∑₁₄PAH concentrations measured in the ambient air was found to be 15±16 ng/m³. Generally, 4-, 5- and 6- ring PAHs were the dominant groups for all tree components, while 2- and 3-ring PAHs were predominant in the air samples. Ring distributions and molecular diagnosis ratios were employed to determine PAH sources in the sampling site. Petroleum and combustion-related sources were found to be important. The Pearson correlation coefficient was allowed to figure out the affinity between PAH levels in the sampling materials and meteorological factors. Temperature and mixing layer height were found to be effective factors on the concentrations. Atmospheric PAH levels were also predicted to employ a bark-air exchange model for determining the PAH movement direction. The predicted/measured ratios were above 1.0. This was probably due to utilizing the branch values rather than bark values in the model. Finally, the risk of cancer has been evaluated. The calculated cancer risks via inhalation were at low levels for adults and children.

在这项研究中，同时收集了周围的空气和橄榄树成分（叶和枝）并分析了多环芳烃（PAHs），以研究它们的水平和累积，时间变化，可能的来源，空气植物分配和12个月的癌症风险。在采样期间，在橄榄叶（溶解相和颗粒相）和分支（1岁和2岁）中测得的总14 PAH（∑ ₁₄ PAH）浓度为593±472、81±67、558±273和316±213 ng / g干重（DW）。同样，在环境空气中测得的平均∑ ₁₄ PAH浓度为15±16 ng / m ³。通常，4环，5环和6环PAH是所有树木成分的主要组，而2环和3环PAH在空气样本中占主导地位。使用环分布和分子诊断率来确定采样点中的PAH来源。发现与石油和燃烧有关的来源很重要。皮尔逊相关系数可以计算出采样材料中PAH水平与气象因素之间的亲和力。发现温度和混合层高度是影响浓度的有效因素。大气中的PAH水平也被预测为采用树皮空气交换模型来确定PAH的运动方向。预测/测量的比率高于1.0。这可能是由于在模型中利用了分支值而不是树皮值。最后，已经评估了癌症风险。对于成年人和儿童，通过吸入计算得出的癌症风险较低。