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TRANSITION Clean Air Network: Exposures to particles and volatile organic compounds across multiple transportation modes

Update Frequency: Not Planned
Latest Data Update: 2022-02-04
Status: Completed
Online Status: ONLINE
Publication State: Published
Publication Date: 2022-02-09
Download Stats: last 12 months
Dataset Size: 30 Files | 39MB


This dataset contains volatile organic compounds (VOC) and ultrafine particle measurements collected onboard several vehicles for the TRANSITION Clean air Network during May 2021 in the London and surrounding area.

The particles measured include VOCs captured in the field using thermal desorption tubes, and then analysed into the component species using highly sensitive Markes International GCxGC-TOF-MS system, and ultrafines data captured using a V2000 sensor from National Air Quality Testing Services by Emissions Analytics. Therefore, a much wider range of pollutants have been tested than in standard air quality monitoring.

The harm caused by emissions from vehicles to air quality and the health of humans outside is increasing well understood and It is generally accepted that it is a policy priority to remove high-emitting vehicles from the road and to swap for low-emission vehicles or public transport. What is less well understood is the exposure of the occupants in various transportation modes. Aggregate time spent in vehicles is significant, and can be measured in hours per day for certain commuters and professional drivers. Existing research by Emissions Analytics shows that the worst-performing cars can have particle number concentrations more than three times than in the ambient air. With Net Zero, particles are likely to be the dominant traffic pollutant.

This dataset contains interior air quality measurements made on a range of modes of transport including diesel and electric trains, the London Underground, diesel and electric buses, and old and new cars, including a battery electric.

Citable as:  Molden, N. (2022): TRANSITION Clean Air Network: Exposures to particles and volatile organic compounds across multiple transportation modes. NERC EDS Centre for Environmental Data Analysis, date of citation.
Abbreviation: Not defined
Keywords: VOC, particles, Clean Air Network


Previous Info:
No news update for this record
Previously used record identifiers:
No related previous identifiers.
Access rules:
Public data: access to these data is available to both registered and non-registered users.
Use of these data is covered by the following licence: When using these data you must cite them correctly using the citation given on the CEDA Data Catalogue record.
Data lineage:

VOC data was captured in the field using thermal desorption tubes, which were then analysed by Emissions Analytics on a Markes International GCxGC-TOF-MS system.
Particle number data was captured using a V2000 from National Air Quality Testing Services

The data was delivered to CEDA from Emissions Analytics.

Data Quality:
Test methods internally developed at Emissions Analytics, validated by Markes Inter national. Data as supplied by the project team
File Format:
Data are BADC-CSV formatted.

Related Documents

 TRANSITION project webpage

Process overview

This dataset was generated by instruments deployed on platforms as listed below.
Output Description

TRANSITION Clean Air Network VOCs and particluates

No variables found.

Temporal Range
Start time:
End time:
Geographic Extent

Related parties
Authors (1)
Principal Investigators (1)