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首页> 外文期刊>Environmental Science & Technology >Real-Time Measurements of SO_2, H_2CO, and CH_4 Emissions from In-Use Curbside Passenger Buses in New York City Using a Chase Vehicle
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Real-Time Measurements of SO_2, H_2CO, and CH_4 Emissions from In-Use Curbside Passenger Buses in New York City Using a Chase Vehicle

机译：使用大通车实时测量纽约市正在使用的路边客车中SO_2，H_2CO和CH_4排放的量

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摘要

The Aerodyne Mobile Laboratory "chased" in-use curbside passenger buses operated by various operators in New York City. With the cooperation of New York State's Metropolitan Transit Authority, the relationships between the emissions of the several gas-phase species and particulate loadings were investigated across several bustechnologies, bus types, and fuels (diesel, ultralow sulfur diesel, and compressed natural gas, CNG). The CNG buses followed did not employ an oxidation catalyst. The buses characterized were not prescreened in any fashion and were measured while deployed on their normal in-service routes. This paper focuses on the fuel-based mass emissions of SO_2, H_2CO, and CH_4, measured using tunable infrared laser differential absorption spectroscopy. Sulfur dioxide emissions from buses known to be burning ultralow sulfur diesel ( < 30 ppm_m S) were 16 times lower than those from buses burning normal commercial diesel fuel, nominally less than 300 ppm_m sulfur. Emissions of formaldehyde and methane from in-use CNG buses were ～15 times greater than those from diesel powered buses.
机译：Aerodyne移动实验室“追逐”了纽约市多家运营商运营的使用中的路边客车。在纽约州大都会运输局的合作下，研究了几种气相技术的排放与颗粒物负载之间的关系，涉及多种总线技术，总线类型和燃料（柴油，超低硫柴油和压缩天然气，CNG） ）。随后的CNG客车未使用氧化催化剂。未对经过表征的公交车进行任何形式的预筛，并在将其部署在其正常运行中时进行了测量。本文着重于使用可调红外激光微分吸收光谱法测量的基于燃料的SO_2，H_2CO和CH_4的质量排放。已知在燃烧超低硫柴油（<30 ppm_m S）的公共汽车上的二氧化硫排放量比在燃烧普通商用柴油燃料的公共汽车上的二氧化硫排放量低16倍，名义上硫含量低于300 ppm_m。在用的CNG公交车中甲醛和甲烷的排放量是柴油动力公交车中的甲醛和甲烷排放量的约15倍。

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