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.
Environ Sci Pollut Res Int. 2019 Mar;26(7):6450-6459. doi: 10.1007/s11356-018-4029-0. Epub 2019 Jan 8.
Asbestos, as with other pollutants in the air, has adverse effects on the health of human beings and animals. Today, the relationship between presence of asbestos fibers in the air breathed by humans and developing serious diseases such as lung cancer (asbestosis) and mesothelioma has been proven. This study was designed and conducted within the time period of August 2017 and June 2018 to determine the concentration of asbestos fiber in the ambient air of Shahryar City and to evaluate their health effects for the general population of the city. For this purpose, samples were taken from four points, and overall 32 air samples were taken along the year. The samples were then analyzed by the phase contrast microscopy (PCM) method. Also, to investigate the type of asbestos and for more accurate counting of fibers, SEM analysis was utilized. Finally, based on the EPA IRIS method, the health effects resulting from asbestos risks were also evaluated. The results of this study indicated that the mean annual concentration of asbestos fiber in the ambient air of Shahryar City was obtained as 0.0019 f/ml PCM and 0.0072 f/ml SEM. Furthermore, the most polluted point was S1 point (0.0119 -0.0026 f/ml, PCM), while the lowest concentration was related to S4 point (0.001 f/ml PCM-0.0021 f/ml SEM). The mean annual risk resulting from airborne asbestos fiber in the ambient air of Shahryar City for all samples was obtained as 1.72 × 10 to 2.2 × 10, which was higher than the recommended risk range in some points.
石棉与空气中的其他污染物一样，对人类和动物的健康有不良影响。如今，已经证明人类吸入的空气中存在石棉纤维与肺癌（石棉肺）和间皮瘤等严重疾病之间存在关系。本研究于 2017 年 8 月至 2018 年 6 月期间设计并进行，旨在确定沙阿里亚尔市环境空气中石棉纤维的浓度，并评估其对城市一般人群的健康影响。为此，从四个点采集了样本，全年共采集了 32 个空气样本。然后，通过相差显微镜（PCM）法对样本进行了分析。此外，为了研究石棉的类型并更准确地计算纤维数量，还利用了扫描电子显微镜（SEM）分析。最后，根据 EPA IRIS 方法，还评估了石棉风险造成的健康影响。本研究结果表明，沙阿里亚尔市环境空气中石棉纤维的年平均浓度为 0.0019 f/ml PCM 和 0.0072 f/ml SEM。此外，污染最严重的点是 S1 点（0.0119-0.0026 f/ml，PCM），而浓度最低的点与 S4 点有关（0.001 f/ml PCM-0.0021 f/ml SEM）。所有样本中，沙阿里亚尔市环境空气中空气中石棉纤维的年平均风险为 1.72×10 至 2.2×10，在某些点高于推荐的风险范围。
