| 泰山大气卤代烃的长期变化趋势与来源 |
| 摘要点击 2054 全文点击 658 投稿时间：2021-03-26 修订日期：2021-07-08 |
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| 中文关键词 卤代烃 长期趋势 来源解析 《蒙特利尔议定书》 泰山 |
| 英文关键词 halocarbons long-term trends source apportionment Montreal Protocol Mount Taishan |
| 作者 | 单位 | E-mail | | 赵峰 | 山东大学环境研究院, 青岛 266237 | 201912800@mail.sdu.edu.cn | | 陈天舒 | 山东大学环境研究院, 青岛 266237 | | | 董灿 | 山东大学环境研究院, 青岛 266237 | | | 李洪勇 | 山东大学环境研究院, 青岛 266237 | | | 刘子璐 | 山东省泰安市气象局, 泰安 271000 | | | 毕于健 | 山东省泰安市气象局, 泰安 271000 | | | 国兆新 | 山东省泰安市气象局, 泰安 271000 | | | 王新锋 | 山东大学环境研究院, 青岛 266237 | | | 杨凌霄 | 山东大学环境研究院, 青岛 266237 | | | 王韬 | 香港理工大学土木与环境工程系, 香港 999077 | | | 王文兴 | 山东大学环境研究院, 青岛 266237 | | | 薛丽坤 | 山东大学环境研究院, 青岛 266237 | xuelikun@sdu.edu.cn |
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| 中文摘要 |
| 卤代烃是大气环境与气候变化研究的热点问题.基于2003~2018年在泰山山顶（36.25°N，117.10°E，海拔1534 m）的6期强化观测数据，结合气流轨迹模型与受体源解析模型，分析了华北平原区域背景大气中卤代烃的长期变化趋势和主要来源.结果表明，《蒙特利尔议定书》已淘汰物种（CFC-12、CFC-11、CFC-113、H-1211、CCl4和CH3CCl3）体积分数显著下降，受管控物种（HCFC-22、HCFC-141b、HCFC-142b和HFC-134a）及未列入管控的物种（CH2Cl2、C2Cl4、CH3Cl、CHCl3）体积分数则呈上升趋势且体积分数中位值显著高于北半球中纬度大气背景中位值；泰山卤代烃的体积分数主要受4种不同来向气团输送的影响，其中来自华北地区气团占比最高（41%）；主要来源包括生物质燃烧（38.1%）、制冷剂（26.2%）、工业及家用溶剂使用（21.7%）、电子工业溶剂使用（8.7%）和氯氟烃储库泄漏（5.3%）.本研究充分证实了我国对《蒙特利尔议定书》的履约，也为进一步削减和管控卤代烃的排放提供了依据与建议. |
| 英文摘要 |
| Halocarbons are hot topics in atmospheric environment and climate change research. Combining observational data from six field campaigns at the summit of Mount Taishan (36.25°N, 117.10°E, 1534 m above sea level) with backward trajectory and receptor source analyses, this study analyzed the long-term trends and major emission sources of halocarbons in the regional background atmosphere of the North China Plain (NCP) from 2003 to 2018. The results showed that the volume fraction of species eliminated by the Montreal Protocol (MP) showed a significant downward trend; however, the MP-controlled and unregulated species showed an overall upward trend. Meanwhile, the median volume fraction of the MP-controlled and unregulated species at Mount Taishan were significantly higher than the mid-latitude median background values in the northern hemisphere. Mount Taishan air was mainly affected by four types of air masses, of which the air mass originating from NCP accounted for the highest proportion (41%). The major sources of halocarbons were biomass/biofuel burning (38.1%), refrigeration (26.2%), industrial and domestic solvent use (21.7%), solvent use in the electronic industry (8.7%), and leakage of chlorofluorocarbon (CFCs) banks (5.3%). This study fully demonstrates that MP has been effectively implemented in China and provides evidence and recommendations to further reduce and control the volume fraction of halocarbons. |
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