Institute of Environmental Pollution and Health, School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China; Key Laboratory of Organic Compound Pollution Control Engineering (Shanghai University), Ministry of Education, Shanghai 200444, China.
Institute of Environmental Pollution and Health, School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China; Key Laboratory of Organic Compound Pollution Control Engineering (Shanghai University), Ministry of Education, Shanghai 200444, China.
Environ Pollut. 2019 Sep;252(Pt B):1819-1827. doi: 10.1016/j.envpol.2019.07.002. Epub 2019 Jul 2.
Twenty-six polycyclic aromatic hydrocarbons (PAHs) and four synthetic musk compounds (SMCs) accumulated by Masson pine needles from different areas of Shanghai were investigated in the present study. Concentrations of ΣPAHs (sum of 26 PAHs) ranged from 234 × 10 to 5370 × 10 mg kg. Levels of ΣPAHs in different sampling areas followed the order: urban areas (Puxi and Pudong) > suburbs > Chongming. Total concentrations of 16 USEPA priority PAHs ranged from 225 × 10 to 5180 × 10 mg kg, ranking at a relatively high level compared to other regions around the world. Factor analysis and multi-linear regression model has identified six sources of PAHs with relative contributions of 15.1% for F1 (vehicle emissions), 47.8% for F2 (natural gas and biomass combustion), 7.8% for F3 (oil), 10.6% for F4 (coal combustion), 15.7% for F5 ("anthracene" source) and 3.0% for F6 (coke tar). Total concentrations of 4 SMCs varied between 0.071 × 10 and 2.72 × 10 mg kg in pine needles from Shanghai. SMCs with the highest detected frequency were Galaxolide and musk xylene, followed by musk ketone and Tonalide. The highest level of SMCs was found near industrial park and daily chemical plant. The results obtained from this study may have important reference value for local government in the control of atmospheric organic pollution.
本研究调查了来自上海不同地区的马尾松针叶中积累的 26 种多环芳烃(PAHs)和 4 种合成麝香化合物(SMCs)。ΣPAHs(26 种 PAHs 的总和)的浓度范围为 234×10 至 5370×10mgkg。不同采样区ΣPAHs 的水平顺序为:城区(浦西和浦东)>郊区>崇明。16 种美国环保署优先 PAHs 的总浓度范围为 225×10 至 5180×10mgkg,与世界其他地区相比处于较高水平。因子分析和多元线性回归模型确定了 6 种 PAHs 的来源,其相对贡献率分别为 F1(车辆排放)的 15.1%、F2(天然气和生物质燃烧)的 47.8%、F3(石油)的 7.8%、F4(煤燃烧)的 10.6%、F5(“蒽”源)的 15.7%和 F6(焦油烟)的 3.0%。上海马尾松针叶中 4 种 SMCs 的总浓度在 0.071×10 至 2.72×10mgkg 之间变化。检测频率最高的 SMCs 是 Galaxolide 和 musk xylene,其次是 musk ketone 和 Tonalide。SMC 浓度最高的地方是在工业园区和日化厂附近。本研究结果可能对地方政府控制大气有机污染具有重要参考价值。