Concentration and photochemistry of PAHs, NPAHs, and OPAHs and toxicity of PM2.5 during the Beijing Olympic Games.
Concentration and photochemistry of PAHs, NPAHs, and OPAHs and toxicity of PM2.5 during the Beijing Olympic Games.
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DOI：
10.1021/es201443z
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发表时间：
2011-08-15
影响因子：
11.4
通讯作者：
Simonich, Staci L. Massey
中科院分区：
文献类型：
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作者：
Wang, Wentao;Jariyasopit, Narumol;Schrlau, Jill;Jia, Yuling;Tao, Shu;Yu, Tian-Wei;Dashwood, Roderick H.;Zhang, Wei;Wang, Xuejun;Simonich, Staci L. Massey
在2008年奥运会之前、期间和之后，在中国北京的北京大学（PKU）收集直径<2.5 μ m（PM2.5）的大气颗粒物，并分析黑碳（BC）、有机碳（OC）、低分子量（MW<300）和MW 302多环芳烃（PAH）、硝化多环芳烃（NPAH）和氧化多环芳烃（OPAH）。此外，还测定了PM2.5的直接和间接致突变性以及对人肺细胞DNA损伤的可能性。在源头控制和奥运会期间，测量到BC（45%）、OC（31%）、MW< 300 PAH（26% - 73%）、MW 302 PAH（22% - 77%）、NPAH（15% - 68%）和OPAH（25% - 53%）浓度显著降低。然而，PM2.5的致突变性仅在奥运期间显著降低。在整个研究过程中，PM2.5的PAH、NPAH和OPAH组成相似，表明不同时期的来源相似。在源控制期间，母体多环芳烃浓度与NO，CO和SO2浓度相关，表明这些多环芳烃与本地和区域的排放。然而，NPAH和OPAH浓度仅与NO浓度相关，表明NPAH和OPAH主要与本地排放有关。相对较高的2-硝基荧蒽/1-硝基芘比值（-）和2-硝基荧蒽/2-硝基芘比值（3.4 - 4.8）表明，NPAHs的光化学生成主要是通过OH自由基引发的。平均而言，NPAH和OPAH浓度为母体PAH浓度的8%，而直接作用致突变性（由于NPAH和OPAH）比间接作用致突变性（由于PAH）高200%。这表明NPAH和OPAH构成了北京PM2.5整体致突变性的重要部分。
Atmospheric particulate matter with diameter <2.5 um (PM2.5) was collected at Peking University (PKU) in Beijing, China before, during, and after the 2008 Olympics and analyzed for black carbon (BC), organic carbon (OC), lower molecular weight (MW<300) and MW302 Polycyclic Aromatic Hydrocarbons (PAHs), nitrated PAHs (NPAHs) and oxygenated PAHs (OPAHs). In addition, the direct and indirect acting mutagenicity of the PM2.5 and the potential for DNA damage to human lung cells were also measured. Significant reductions in BC (45%), OC (31%), MW< 300 PAH (26% – 73%), MW 302 PAH (22% – 77%), NPAH (15% – 68%) and OPAH (25% – 53%) concentrations were measured during the source control and Olympic Olympic period. However, the mutagenicity of the PM2.5 was significantly reduced only during the Olympic period. The PAH, NPAH, and OPAH composition of the PM2.5 was similar throughout the study, suggesting similar sources during the different periods. During the source control period, the parent PAH concentrations were correlated with NO, CO, and SO2 concentrations, indicating that these PAHs were associated with both local and regional emissions. However, the NPAH and OPAH concentrations were only correlated with the NO concentrations, indicating that the NPAH and OPAH were primarily associated with local emissions. The relatively high 2-nitrofluoranthene/1-nitropyrene ratio ( –) and 2-nitrofluoranthene/2-nitropyrene ratio (3.4 – 4.8), suggested a predominance of photochemical formation of NPAHs through OH-radical-initiated reactions in the atmosphere. On average, the ΣNPAH and ΣOPAH concentrations were 8% of the parent PAH concentrations, while the direct-acting mutagenicity (due to the NPAH and OPAH) was 200% higher than the indirect-acting mutagenicity (due to the PAH). This suggests that NPAH and OPAH make up a significant portion of the overall mutagenicity of PM2.5 in Beijing.
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影响因子：
11.4
作者：
Shen, Guofeng;Yang, Yifeng;Wang, Wei;Tao, Shu;Zhu, Chen;Min, Yujia;Xue, Miao;Ding, Junnan;Wang, Bin;Wang, Rong;Shen, Huizhong;Li, Wei;Wang, Xilong;Russell, Armistead G.
通讯作者：
Russell, Armistead G.
DOI：
10.1016/s0165-1218(96)90103-2
发表时间：
1996-12-20
期刊：
MUTATION RESEARCH-GENETIC TOXICOLOGY
影响因子：
--
作者：
Durant, JL;Busby, WF;Crespi, CL
通讯作者：
Crespi, CL
2008 年北京夏季奥运会期间空气质量和成人哮喘门诊就诊量
影响因子：
9.8
作者：
Li, Yi;Wang, Wen;Chen, Bingheng
通讯作者：
Chen, Bingheng
影响因子：
11.4
作者：
Primbs, Toby;Piekarz, Arkadiusz;Wilson, Glenn;Schmedding, David;Higginbotham, Carol;Field, Jennifer;Simonich, Staci Massey
通讯作者：
Simonich, Staci Massey
影响因子：
4.1
作者：
Primbs, Toby;Genualdi, Susan;Simonich, Staci Massey
通讯作者：
Simonich, Staci Massey