Imperial College London

DrHeatherWalton

Faculty of MedicineSchool of Public Health

Senior Lecturer in Environmental Health
 
 
 
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h.walton Website

 
 
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Location

 

Sir Michael Uren HubWhite City Campus

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Summary

 

Publications

Citation

BibTex format

@article{Rivas:2021:10.1016/j.envint.2021.106662,
author = {Rivas, I and Vicens, L and Basagaña, X and Tobías, A and Katsouyanni, K and Walton, H and Hüglin, C and Alastuey, A and Kulmala, M and Harrison, RM and Pekkanen, J and Querol, X and Sunyer, J and Kelly, FJ},
doi = {10.1016/j.envint.2021.106662},
journal = {Environment International},
title = {Associations between sources of particle number and mortality in four European cities},
url = {http://dx.doi.org/10.1016/j.envint.2021.106662},
volume = {155},
year = {2021}
}

RIS format (EndNote, RefMan)

TY  - JOUR
AB - BACKGROUND: The evidence on the association between ultrafine (UFP) particles and mortality is still inconsistent. Moreover, health effects of specific UFP sources have not been explored. We assessed the impact of UFP sources on daily mortality in Barcelona, Helsinki, London, and Zurich. METHODS: UFP sources were previously identified and quantified for the four cities: daily contributions of photonucleation, two traffic sources (fresh traffic and urban, with size mode around 30 nm and 70 nm, respectively), and secondary aerosols were obtained from data from an urban background station. Different periods were investigated in each city: Barcelona 2013-2016, Helsinki 2009-2016, London 2010-2016, and Zurich 2011-2014. The associations between total particle number concentrations (PNC) and UFP sources and daily (natural, cardiovascular [CVD], and respiratory) mortality were investigated using city-specific generalized linear models (GLM) with quasi-Poisson regression. RESULTS: We found inconsistent results across cities, sources, and lags for associations with natural, CVD, and respiratory mortality. Increased risk was observed for total PNC and natural mortality in Helsinki (lag 2; 1.3% [0.07%, 2.5%]), CVD mortality in Barcelona (lag 1; 3.7% [0.17%, 7.4%]) and Zurich (lag 0; 3.8% [0.31%, 7.4%]), and respiratory mortality in London (lag 3; 2.6% [0.84%, 4.45%]) and Zurich (lag 1; 9.4% [1.0%, 17.9%]). A similar pattern of associations between health outcomes and total PNC was followed by the fresh traffic source, for which we also found the same associations and lags as for total PNC. The urban source (mostly aged traffic) was associated with respiratory mortality in Zurich (lag 1; 12.5% [1.7%, 24.2%]) and London (lag 3; 2.4% [0.90%, 4.0%]) while the secondary source was associated with respiratory mortality in Zurich (lag 1: 12.0% [0.63%, 24.5%]) and Helsinki (4.7% [0.11%, 9.5%]). Reduced risk for the photonucleation source was observed for respiratory mortalit
AU - Rivas,I
AU - Vicens,L
AU - Basagaña,X
AU - Tobías,A
AU - Katsouyanni,K
AU - Walton,H
AU - Hüglin,C
AU - Alastuey,A
AU - Kulmala,M
AU - Harrison,RM
AU - Pekkanen,J
AU - Querol,X
AU - Sunyer,J
AU - Kelly,FJ
DO - 10.1016/j.envint.2021.106662
PY - 2021///
SN - 0160-4120
TI - Associations between sources of particle number and mortality in four European cities
T2 - Environment International
UR - http://dx.doi.org/10.1016/j.envint.2021.106662
UR - https://www.ncbi.nlm.nih.gov/pubmed/34098335
UR - http://hdl.handle.net/10044/1/89955
VL - 155
ER -