Further insights into the composition, source, and toxicity of pahs in size-resolved particulate matter in a megacity in china
Further insights into the composition, source, and toxicity of pahs in size-resolved particulate matter in a megacity in china
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进一步深入了解中国大城市尺寸分辨颗粒物中多环芳烃的组成、来源和毒性
DOI：
10.1002/etc.2809
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发表时间：
2015
影响因子：
4.1
通讯作者：
Liang Yang-Ke-Xin
中科院分区：
文献类型：
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作者：
Shi Guo-Liang;Zhou Xiao-Yu;Jiang Su-Yang;Tian Ying-Ze;Liu Gui-Rong;Feng Yin-Chang;Chen Gang;Liang Yang-Ke-Xin
测量了空气动力学直径小于10 μm的颗粒物（PM10）和空气动力学直径小于2.5 μm的颗粒物（PM2.5）的浓度，以及16种多环芳烃（PAHs）的浓度。pm10和PM2.5的平均浓度分别达到209.75和141.87 μg/m3， ΣPAHs的pm10和PM2.5的平均浓度分别为41.46 ng/m3和36.77 ng/m3。pm10和PM2.5的质量比浓度分别为219.23和311.01 μg/g。获得了多环芳烃的三个来源及其贡献。在个体输入模式下，柴油尾气对质量浓度的贡献为46.77% （PM10）和41.12% (PM2.5)，对质量比浓度的贡献为48.69% （PM10）和39.47% (PM2.5)；汽油尾气对质量浓度的贡献率为31.02% （PM10）和39.47% (PM2.5)，对质量比浓度的贡献率为28.95% （PM10）和36.46% (PM2.5)；燃煤对质量浓度的贡献分别为22.22% （PM10）和19.41% (PM2.5), 22.36% （PM10）和15.89% （PM2.5）。对于组合输入方式，获得相同的源类别。对pm10和pm2.5的源贡献分别为柴油尾气（质量浓度分别为40.70%和36.64%，质量比浓度分别为49.19%和38.47%）、汽油尾气（质量浓度分别为35.09%和38.47%，质量比浓度分别为32.50%和33.43%）和煤炭燃烧（质量浓度分别为24.21%和24.89%，质量比浓度分别为18.31%和18.17%）。源风险评估表明，车辆排放是一个重要的贡献者。这些发现有助于阐明多环芳烃的来源，并为Unmix模型的进一步应用和对多环芳烃的进一步研究提供证据。环境科学与技术，2015;33(4):481 - 481。©2014 setac
Concentrations of particulate matter with an aerodynamic diameter less than 10 μm (PM10) and PM with an aerodynamic diameter less than 2.5 μm (PM2.5), and 16 polycyclic aromatic hydrocarbons (PAHs) were measured. The average concentrations of PM10and PM2.5reached 209.75 μg/m3and 141.87 μg/m3, respectively, and those of ΣPAHs were 41.46 ng/m3for PM10and 36.77 ng/m3for PM2.5. The mass ratio concentrations were 219.23 μg/g and 311.01 μg/g in PM10and PM2.5, respectively. Three sources and their contributions for PAHs were obtained. For individual input mode, diesel exhaust contributed 46.77% (PM10) and 41.12% (PM2.5) for mass concentration and 48.69% (PM10) and 39.47% (PM2.5) for mass ratio concentration; gasoline exhaust contributed 31.02% (PM10) and 39.47% (PM2.5) for mass concentration and 28.95% (PM10) and 36.46% (PM2.5) for mass ratio concentration; and coal combustion contributed 22.22% (PM10) and 19.41% (PM2.5) for mass concentration and 22.36% (PM10) and 15.89% (PM2.5) for mass ratio concentration. For combined input mode, the same source categories were obtained. Source contributions to PM10and PM2.5were diesel exhaust (40.70% and 36.64%, respectively, for mass concentration; 49.19% and 38.47%, respectively, for mass ratio concentration), gasoline exhaust (35.09% and 38.47%, respectively, for mass concentration; 32.50% and 33.43%, respectively, for mass ratio concentration), and coal combustion (24.21% and 24.89%, respectively, for mass concentration; 18.31% and18.17%, respectively, for mass ratio concentration). Source risk assessment showed that vehicle emission was a significant contributor. The findings can help elucidate sources of PAHs and provide evidence supporting further applications of the Unmix model and additional studies about PAHs.Environ Toxicol Chem2015;34:480–487. © 2014 SETAC