全球人类产生的全挥发性有机化合物排放量
Lyuyin Huang1,2, Bin Zhao1,2, Shuxiao Wang1,2
1State Key Joint Laboratory of Environmental Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China.
Environmental science & technology
|October 19, 2023
概括
本研究介绍了第一个全挥发性有机排放的全球清单,包括中等挥发性和半挥发性有机化合物 (IVOC和SVOC). 这种综合性方法解释了以前低估的有机气溶前体,改善了空气污染和气候变化模型.
科学领域:
- 大气化学 大气化学
- 环境科学 环境科学
- 气候科学 气候科学
背景情况:
- 传统的排放清单忽略了中间挥发性和半挥发性有机化合物 (IVOC / SVOC),这是二次有机气溶的关键前体.
- 这种遗漏导致对影响空气质量和气候建模的有机排放的低估.
研究的目的:
- 建立第一个全球人类产生的全挥发性有机排放清单.
- 根据挥发性进行化学分类或垃圾排放,包括极低/低挥发性有机化合物 (xLVOCs),SVOCs,IVOCs和VOCs.
- 确定这些化合物的主要排放来源和区域.
主要方法:
- 开发一个新的全球排放清单框架,涵盖有机化合物的全部波动范围.
- 2015年对xLVOCs,SVOCs,IVOCs和VOCs的排放量进行量化.
- 分析来自不同部门 (如挥发性化学品,国内燃烧,运输) 和地理区域的排放贡献.
主要成果:
- 2015年全挥发性排放总量为13.2万 (xLVOCs),10.1万 (SVOCs),23.3万 (IVOCs) 和120.5万 (VOCs).
- 与传统库存相比,新的框架确定了额外的18.5万I/S/xLVOC.
- 挥发性化学产品 (VCP),家庭燃烧和道路运输是主要的贡献者,特别是IVOC和VOC.
- 主要排放地区包括非洲,印度,东南亚,中国,欧洲和美国.
结论:
- 全挥发性有机排放清单提供了更准确的有机气溶前体的表现.
- 了解这些排放对于提高空气污染和气候变化评估的准确性至关重要.
- 该研究强调了VCP和运输在IVOC和VOC排放中的重要作用,特别是在工业化地区.
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