Norzaee Samira, Darvishali Siamak, Farzadkia Mahdi, Jafari Ahmad Jonidi, Gholami Mitra, Shahsavani Abbas, Kermani Majid
Research Center for Environmental Health Technology, Iran University of Medical Sciences, Tehran, Iran.
Department of Environmental Health Engineering, School of Public Health, Iran University of Medical Sciences, Tehran, Iran.
Sci Rep. 2025 Jul 29;15(1):27591. doi: 10.1038/s41598-025-12330-x.
This study investigated asbestos fiber concentrations and associated health risks in Shiraz over a period of one year and examined their relationship with various land use factors. Samples were analyzed using phase-contrast microscopy (PCM), and health effects were assessed using the EPA's IRIS method. We examined the relationship between asbestos fiber concentrations and road network density, population, number of bus stations, and green space. The results showed that 10% of the sampling sites in Shiraz had low asbestos fiber concentrations, 20% had medium concentrations, 60% had high concentrations, and 10% had very high concentrations. The mean ELCR for asbestos inhalation was 1.44 × 10, indicating a cancer risk for 1.44 out of every 10,000 people. The highest ELCR values were found in the west, near the Shiraz Ring expressway, and in the southeast, near high-traffic areas. Additionally, no positive correlation was found between asbestos concentrations and population, bus stations, or green space, but there was a significant positive correlation with road network density. Motor vehicle traffic is the primary source of asbestos pollution, posing a significant health risk. Traffic control measures and replacing asbestos in brake pads with alternative materials are necessary to reduce pollution in Shiraz.
本研究调查了设拉子一年内的石棉纤维浓度及相关健康风险，并研究了它们与各种土地利用因素的关系。使用相差显微镜（PCM）对样本进行分析，并采用美国环境保护局（EPA）的综合风险信息系统（IRIS）方法评估健康影响。我们研究了石棉纤维浓度与道路网络密度、人口、公交站点数量和绿地之间的关系。结果显示，设拉子10%的采样点石棉纤维浓度较低，20%为中等浓度，60%为高浓度，10%为非常高的浓度。吸入石棉的平均额外终身癌症风险（ELCR）为1.44×10，这表明每10000人中有1.44人有患癌风险。最高的ELCR值出现在西部靠近设拉子环形高速公路的地方，以及东南部靠近高交通流量区域的地方。此外，未发现石棉浓度与人口、公交站点或绿地之间存在正相关，但与道路网络密度存在显著正相关。机动车交通是石棉污染的主要来源，对健康构成重大风险。在设拉子，采取交通管制措施并用替代材料取代刹车片中的石棉对于减少污染是必要的。
