Origin of inorganic and organic components of PM2.5 in subway stations of Barcelona, Spain.
Environ Pollut
; 208(Pt A): 125-136, 2016 Jan.
Article
in En
| MEDLINE
| ID: mdl-26189044
ABSTRACT
The present work assesses indoor air quality in stations of the Barcelona subway system. PM2.5 concentrations on the platforms of 4 subway stations were measured during two different seasons and the chemical composition was determined. A Positive Matrix Factorization analysis was performed to identify and quantify the contributions of major PM2.5 sources in the subway stations. Mean PM2.5 concentrations varied according to the stations design and seasonal periods. PM2.5 was composed of haematite, carbonaceous aerosol, crustal matter, secondary inorganic compounds, trace elements, insoluble sulphate and halite. Organic compounds such as PAHs, nicotine, levoglucosan and aromatic musk compounds were also identified. Subway PM2.5 source comprised emissions from rails, wheels, catenaries, brake pads and pantographs. The subway source showed different chemical profiles for each station, but was always dominated by Fe. Control actions on the source are important for the achievement of better air quality in the subway environment.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Railroads
/
Air Pollution, Indoor
/
Air Pollutants
/
Particulate Matter
Type of study:
Prognostic_studies
Country/Region as subject:
Europa
Language:
En
Journal:
Environ Pollut
Journal subject:
SAUDE AMBIENTAL
Year:
2016
Document type:
Article