Biomedical Sciences Doctoral School, University of Oradea, 410087 Oradea, Romania.
Preclinical Department, Faculty of Medicine, Lucian Blaga University of Sibiu, 550024 Sibiu, Romania.
Int J Environ Res Public Health. 2021 May 2;18(9):4858. doi: 10.3390/ijerph18094858.
Benzene, toluene, and total BTEX (benzene, toluene, ethylbenzene, and xylene) concentrations registered for one year (2016) have been determined every month for one high-density traffic area. The assessment was performed in Arad City, Romania, to evaluate these pollutants and their influence on the inhabitants' health. The contaminants were sampled using a static sampling method and analyzed by gas chromatography coupled with mass spectrometry. Benzene was the most dominant among the BTEX compounds-the average concentrations ranged from 18.00 ± 1.32 µg m in December to 2.47 ± 0.74 µg m in August. The average toluene concentration over the year was 4.36 ± 2.42 µg m (with a maximum of 9.60 ± 2.39 µg m in November and a minimum of 1.04 ± 0.29 µg m in May). The toluene/benzene ratio (T/B) was around 0.5, indicating substantial contributions from mobile sources (vehicles). The emission and accumulation of different aromatic compounds (especially benzene) could deteriorate the urban air quality. The lifetime cancer risk (LTCR) for benzene was found to be more than 10 in winter, including the inhabitants in the "probable cancer risk" category.
苯、甲苯和总 BTEX（苯、甲苯、乙苯和二甲苯）浓度在罗马尼亚阿拉德市进行了为期一年（2016 年）的监测，每月进行一次，以评估这些污染物及其对居民健康的影响。采用静态采样法采集污染物样本，并用气相色谱-质谱联用仪进行分析。苯是 BTEX 化合物中最主要的一种——其浓度范围从 12 月的 18.00±1.32μg/m³到 8 月的 2.47±0.74μg/m³。全年甲苯的平均浓度为 4.36±2.42μg/m³（11 月最高可达 9.60±2.39μg/m³，5 月最低可达 1.04±0.29μg/m³）。甲苯/苯的比值（T/B）约为 0.5，表明移动源（车辆）的贡献较大。不同芳香族化合物（尤其是苯）的排放和积累可能会恶化城市空气质量。苯的终生癌症风险（LTCR）在冬季超过 10，包括处于“可能致癌风险”类别的居民。
