| 山东省沿海城市大气挥发性有机物污染特征分析 |
| Pollution Characteristics of Ambient Air VOCs of Seven Coastal Cities in Shandong Province |
| 投稿时间：2024-05-08 修订日期：2024-06-19 |
| DOI：10.19316/j.issn.1002-6002.2024.04.09 |
| 中文关键词: 沿海城市 VOCs 臭氧生成潜势 二次有机气溶胶生成潜势 |
| 英文关键词:coastal city volatile organic compounds ozone formation potential secondary organic aerosol formation potential |
| 基金项目:山东省自然科学基金重大基础研究项目(ZR2020ZD21) |
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| 通讯作者:张凤菊* 山东省生态环境监测中心, 山东 济南 250101 |
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| 中文摘要: |
| 于2018年11月—2019年1月采集了青岛、烟台、日照、威海、潍坊、东营和滨州7个沿海城市的环境空气样品,分析了117种VOCs的污染水平、臭氧(O3)生成潜势、二次有机气溶胶(SOA)生成潜势。结果显示,观测期间,7个沿海城市大气VOCs质量浓度表现为东营(422 μg/m3)>滨州(366 μg/m3)>烟台(324 μg/m3)>青岛(261 μg/m3)>威海(226μg/m3)>潍坊(192 μg/m3)>日照(146 μg/m3)。其中,青岛、烟台、日照和东营以卤代烃为主要VOCs污染物,威海、潍坊和滨州以烷烃为主要VOCs污染物。滨州O3生成潜势和SOA生成潜势最大,分别为872 μg/m3和0.70 μg/m3;日照O3生成潜势最小,为220 μg/m3;东营SOA生成潜势最小,为0.22 μg/m3。芳香烃是7个城市SOA的重要前体物。 |
| 英文摘要: |
| Air pollutants were collected in Qingdao,Yantai,Rizhao,Weihai,Weifang,Dongying and Binzhou of Shandong Province during November 2018 to January 2019, and the pollution levels, ozone (O3) formation potential, secondary organic aerosol (SOA) formation potential of 117 kinds of VOCs were analyzed by preconcentration-gas chromatography/mass spectrometry and high performance liquid chromatography. The results showed that concentrations of air VOCs varied significantly with the seven coastal cities,with Dongying (422 μg/m3)>Binzhou (366 μg/m3)>Yantai (324 μg/m3)>Qingdao (261 μg/m3)>Weihai (226 μg/m3) >Weifang (192 μg/m3) >Rizhao (146 μg/m3). Among them,the main VOCs pollutants in Qingdao,Yantai,Rizhao and Dongying were halogenated hydrocarbons,and alkane were the main VOCs pollutants in Weihai,Weifang and Binzhou. The O3 formation potential and SOA formation potential of Binzhou were the highest, which were 872 μg/m3 and 0.70 μg/m3, respectively. The O3 formation potential was the smallest in Rizhao,which was 220 μg/m3. And Dongying had the lowest SOA formation potential,which was 0.22 μg/m3. Aromatic hydrocarbons were important precursors of SOA in seven cities. |
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