背景:废物转运站(WTS)是影响环境和人类健康的最重要因素之一。本研究旨在评估WTS人员中VOCs的健康风险,并为VOCs的分散提供模型。空气污染模型(TAPM)能够模拟每个城镇的WTS排放扩散。
结果:GC-MS用于分析收集的气体样品,以检测和评估致癌和非致癌VOCs健康风险。所有人员的总终生癌症风险值(3.30E-05),超过可接受的限值(1.00E-06)。此外,1,2,3-三甲基苯的危险比(HR),1,3-二氯丙烷,甲苯,m,对二甲苯和乙苯分别为3.7、1.9E-01、4.4E-03、5.5E-02和1.5E-03,所述化合物的总HR超过公认的限度(HR<1.00)。IOA为0.85,RMSE为2.16,TAPM具有良好的性能。在远离WTS的1600m处,VOCs水平相当高,特别是在夏季,需要更多关注。
结论:在WTS中,VOCs的暴露水平很高,应该使用一些控制策略来减少污染,保护公民和人员免受非癌和癌变的风险。
BACKGROUND: The waste transfer stations (WTSs) is one of the most important factors affecting on environment and human health. This research is aimed to evaluate health risk of VOCs among WTS personnel and provide a model for dispersion of VOCs. The Air Pollution Model (TAPM) is able to simulate WTS emissions dispersion over each town.
RESULTS: GC-MS was used to analysis collected gas samples to detect and estimate carcinogenic and non-carcinogenic VOCs health risks. The total lifetime cancer risk values for the all personnel (3.30E-05), was more than acceptable limit (1.00E-06). Furthermore, hazard ratio (HR) of 1,2,3-trimethylbenzene, 1,3-dichloropropane, toluene, m,p-xylene and ethylbenzene were 3.7, 1.9 E-01, 4.4 E-03, 5.5 E-02 and 1.5 E-03, respectively, and total HR of the mentioned compounds were more than accepted limit (HR < 1.00). IOA is 0.85 and RMSE is 2.16 and TAPM has a good performance. The VOCs level is considerable in 1600 m far from the WTS particularly in summer that require more attention.
CONCLUSIONS: The exposure to VOCs was at a high level in WTS, and some controlling strategy should be used for decreasing the pollution and protecting the citizens and personnel against non-cancerous and cancerous risks.