Unreported VOC Emissions from Road Transport Including from Electric Vehicles.
Unreported VOC Emissions from Road Transport Including from Electric Vehicles.
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DOI：
10.1021/acs.est.3c00845
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发表时间：
2023-05-30
影响因子：
11.4
通讯作者：
Yeoman, Amber M. M.
中科院分区：
文献类型：
--
作者：
Cliff, Samuel J. J.;Lewis, Alastair C. C.;Shaw, Marvin D. D.;Lee, James D. D.;Flynn, Michael;Andrews, Stephen J. J.;Hopkins, James R. R.;Purvis, Ruth M. M.;Yeoman, Amber M. M.
人们普遍认为，随着时间的推移，逐步淘汰汽油和柴油内燃机将大大减少道路运输和相关燃料中挥发性有机化合物 (VOC) 的排放。然而，使用新的移动空气质量监测站的实际排放测量结果表明，道路运输排放清单中的酒精类物质被大大低估。行业销售统计数据的扩展使差异归因于辅助溶剂产品的使用，例如屏幕清洗剂和除冰剂，这些产品未包含在国际通用的车辆排放方法中。针对缺失源计算出的车队平均非燃料非尾气 VOC 排放因子为 58 ± 39 mg veh–1 km–1，该系数大于车辆尾气排放的所有 VOC 及其相关蒸发燃料损失的总和。这些排放与车辆能量/推进系统无关，因此适用于所有道路车辆类型，包括配备电池电动动力系统的车辆。与预测相反，考虑到未来电气化车队行驶总公里数的预计增长，车辆 VOC 排放量实际上可能会增加，并且由于来源变化将经历完整的 VOC 重新分布。测量结果表明，屏幕清洗应用在车辆挥发性有机化合物排放中占主导地位，并且在道路运输清单中缺失。
There are widespread policy assumptions that the phase-out of gasoline and diesel internal combustion engines will over time lead to much reduced emissions of Volatile Organic Compounds (VOCs) from road transport and related fuels. However, the use of real-world emissions measurements from a new mobile air quality monitoring station demonstrated a large underestimation of alcohol-based species in road transport emissions inventories. Scaling of industry sales statistics enabled the discrepancy to be attributed to the use of ancillary solvent products such as screenwash and deicer which are not included in internationally applied vehicle emission methodologies. A fleet average nonfuel nonexhaust VOC emission factor of 58 ± 39 mg veh–1 km–1 was calculated for the missing source, which is greater than the total of all VOCs emitted from vehicle exhausts and their associated evaporative fuel losses. These emissions are independent of the vehicle energy/propulsion system and therefore applicable to all road vehicle types including those with battery-electric powertrains. In contrast to predictions, vehicle VOC emissions may actually increase given a predicted growth in total vehicle kilometers driven in a future electrified fleet and will undergo a complete VOC respeciation due to the source change. Measurements show that screenwash application dominates vehicular VOC emissions and is missing from road transport inventories.
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影响因子：
5
作者：
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通讯作者：
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影响因子：
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