School of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology, UNIST-gil 50, Ulsan, 689-798, Republic of Korea.
School of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology, UNIST-gil 50, Ulsan, 689-798, Republic of Korea.
Sci Total Environ. 2014 Feb 1;470-471:1494-501. doi: 10.1016/j.scitotenv.2013.08.031. Epub 2013 Sep 5.
We collected soil samples at 25 sites in Ulsan, Korea to investigate the levels, patterns, spatial distribution, and sources of polycyclic aromatic hydrocarbons (PAHs) in the summer 2010. The target compounds were the 16 US-EPA priority PAHs. For the source identification of PAHs, diagnostic ratios and the positive matrix factorization (PMF) model were used. The total concentrations of PAHs ranged from 65 ng/g to 12,000 ng/g (mean: 960 ng/g, median 330 ng/g). The levels and distribution of PAHs indicated that industrial areas were more polluted than rural and urban areas. The diagnostic ratios suggested that the soil samples were contaminated by pyrogenic sources and traffic emission. According to the result of PMF, four factors were identified: gasoline and heavy oil combustion (14%), diesel combustion (54%), coke oven (23%), and coal/biomass burning (9%). Therefore, it was concluded that vehicles and industrial complexes were major sources of PAHs in Ulsan.
我们在韩国蔚山的 25 个地点采集了土壤样本,以调查 2010 年夏季多环芳烃 (PAHs) 的水平、模式、空间分布和来源。目标化合物是美国环保署优先控制的 16 种 PAHs。为了识别 PAHs 的来源,我们使用了诊断比值和正矩阵因子化 (PMF) 模型。PAHs 的总浓度范围为 65ng/g 至 12000ng/g(平均值:960ng/g,中位数 330ng/g)。PAHs 的水平和分布表明,工业区比农村和城市地区污染更严重。诊断比值表明,土壤样品受到了源自热解源和交通排放的污染。根据 PMF 的结果,确定了四个因素:汽油和重油燃烧(14%)、柴油燃烧(54%)、焦炉(23%)和煤/生物质燃烧(9%)。因此,可以得出结论,车辆和工业综合体是蔚山 PAHs 的主要来源。