An increasing role for solvent emissions and implications for future measurements of volatile organic compounds.
An increasing role for solvent emissions and implications for future measurements of volatile organic compounds.
复制标题
DOI：
10.1098/rsta.2019.0328
复制
发表时间：
2020-10-30
期刊：
影响因子：
--
通讯作者：
Murrells T
中科院分区：
文献类型：
--
作者：
Lewis AC;Hopkins JR;Carslaw DC;Hamilton JF;Nelson BS;Stewart G;Dernie J;Passant N;Murrells T
挥发性有机化合物（VOCs）是大气污染物的一大类，它是对流层臭氧和二次有机气溶胶的前体。英国人为VOCs排放总量在1990年达到峰值，为2，840 kt yr-1，然后在2017年下降到约810 kt yr-1，道路运输和易散性燃料排放量大幅减少。据观察，在英国，许多非甲烷碳氢化合物（NMHC）的大气浓度在这一时期以大致相似的比例下降。据估计，溶剂和工业过程对排放的相对贡献从1990年的约35%增加到2017年的约63%。1992年，英国国家监测量化了20种最丰富的人为VOCs排放中的19种（均为NMHCs），但到2017年，监测仅捕获了前20种排放的VOCs中的13种。据估计，乙醇现在是最重要的VOC排放量（2017年约为100%）。136 kt yr-1，约其次是正丁烷（52.4千吨/年）和甲醇（33.2千吨/年）。酒精的重要性有所增加，1990年约占排放量的10%，2017年上升到约30%。溶剂排放的增加作用现在应该反映在欧洲监测战略中，以验证国家排放上限指令中的总VOC减排义务。将乙醇、甲醇、甲醛、丙酮、2-丁酮和2-丙醇添加到现有的非甲烷碳氢化合物测量中，将全面覆盖每年排放的20种最重要的挥发性有机化合物。这篇文章是一个讨论会的一部分问题“空气质量，过去现在和未来”。
Volatile organic compounds (VOCs) are a broad class of air pollutants which act as precursors to tropospheric ozone and secondary organic aerosols. Total UK emissions of anthropogenic VOCs peaked in 1990 at 2,840 kt yr−1 and then declined to approximately 810 kt yr−1 in 2017 with large reductions in road transport and fugitive fuel emissions. The atmospheric concentrations of many non-methane hydrocarbons (NMHC) in the UK have been observed to fall over this period in broadly similar proportions. The relative contribution to emissions from solvents and industrial processes is estimated to have increased from approximately 35% in 1990 to approximately 63% in 2017. In 1992, UK national monitoring quantified 19 of the 20 most abundant individual anthropogenic VOCs emitted (all were NMHCs), but by 2017 monitoring captured only 13 of the top 20 emitted VOCs. Ethanol is now estimated to be the most important VOC emitted by mass (in 2017 approx. 136 kt yr−1 and approx. 16.8% of total emissions) followed by n-butane (52.4 kt yr−1) and methanol (33.2 kt yr−1). Alcohols have grown in significance representing approximately 10% of emissions in 1990 rising to approximately 30% in 2017. The increased role of solvent emissions should now be reflected in European monitoring strategies to verify total VOC emission reduction obligations in the National Emissions Ceiling Directive. Adding ethanol, methanol, formaldehyde, acetone, 2-butanone and 2-propanol to the existing NMHC measurements would provide full coverage of the 20 most significant VOCs emitted on an annual mass basis. This article is part of a discussion meeting issue ‘Air quality, past present and future’.
登录
查看更多内容
影响因子：
18.3
作者：
Hunter, James F.;Day, Douglas A.;Kroll, Jesse H.
通讯作者：
Kroll, Jesse H.
影响因子：
64.8
作者：
Lewis, AC;Carslaw, N;Pilling, MJ
通讯作者：
Pilling, MJ
影响因子：
5
作者：
Derwent, RG;Jenkin, ME;Pilling, MJ
通讯作者：
Pilling, MJ
影响因子：
5
作者：
von Schneidemesser, Erika;Monks, Paul S.;Plass-Duelmer, Christian
通讯作者：
Plass-Duelmer, Christian
影响因子：
5
作者：
Waked, Antoine;Sauvage, Stephane;Locoge, Nadine
通讯作者：
Locoge, Nadine