Polycyclic aromatic hydrocarbons (PAHs) bounded in indoor dust have significant effects in residents’ health. Although various researches has evaluated exposure to PAHs in some indoor areas around the world, no work has been conducted on bioaccessibility of indoor PAHs in the buildings of Bushehr city. Therefore, dust samples were collected from various indoor microenvironments including residential buildings (RB), office buildings (OB), commercial buildings (CB), industrial buildings (IB), school classroom (SC), laboratory (LR), drugstores (DS), beauty salons (BS), smoking cafés (SC) and restaurants (Res) - 10 from each microenvironment. In order to determine the levels of polycyclic aromatic hydrocarbons (PAHs), bioaccessible PAHs, and sink sorption PAHS were analyzed in them. The results showed that the highest level of these contaminants was detected in SC and the lowest in Lab. The median concentration of dust-bound ΣPAHs, bioaccessible ΣPAHs, and sink sorption ΣPAHs in the SC samples were 10,890.00, 1157.92, and 297.28 ng/g, and they were 1160.00, 19.69, and 0.75 ng/g in Lab samples. The results also indicated that the ΣPAHs concentration had a negative and significant association with the ventilation rate (pvalue <0.05 in most cases), as well as a positive and significant relationship with smoking inside buildings (pvalue <0.05). The estimated daily intake (EDI) values calculated for residential buildings (RB) were higher compared to most of the other studied microenvironments. These observations can be due to the fact that people spend much more time in residential buildings (50% of the entire day) compared to occupational settings (22%). Thus, they intake more dust within a longer time, and are hence exposed to larger amounts of pollutants bound with these particles.

室内灰尘中的多环芳烃（PAHs）对居民健康有显着影响。尽管各种研究已经评估了世界各地一些室内区域的 PAHs 暴露情况，但尚未对布什尔市建筑物中室内 PAHs 的生物可及性进行任何研究。因此，从各种室内微环境中收集灰尘样本，包括住宅建筑（RB）、办公建筑（OB）、商业建筑（CB）、工业建筑（IB）、学校教室（SC）、实验室（LR）、药店（DS） 、美容院 (BS)、吸烟咖啡馆 (SC) 和餐馆 (Res) - 每个微环境 10 个。为了确定多环芳烃 (PAHs) 的含量，对其中的生物可及性 PAHs 和水槽吸附 PAHS 进行了分析。结果表明，这些污染物在 SC 中检测到的水平最高，在实验室中检测到最低。SC 样品中灰尘结合的 ΣPAHs、生物可接触的 ΣPAHs 和水槽吸附 ΣPAHs 的中位浓度分别为 10,890.00、1157.92 和 297.28 ng/g，在实验室样品中分别为 1160.00、19.69 和 0.75 ng/g。结果还表明，ΣPAHs浓度与通风率呈显着负相关（大多数情况下p值<0.05），与建筑物内吸烟呈显着正相关（p值<0.05）。与大多数其他研究的微环境相比，为住宅建筑 (RB) 计算的估计每日摄入量 (EDI) 值更高。这些观察结果可能是由于人们在住宅建筑中花费的时间（全天 50%）与职业环境（22%）相比要多得多。因此，它们会在更长的时间内吸入更多的灰尘，从而暴露在与这些颗粒结合的大量污染物中。