Imperial College London
Alternate

Professor Terry Tetley

Faculty of Medicine, National Heart & Lung Institute

Professor of Lung Cell Biology
 
 
 
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Contact

 

+44 (0)20 7594 2984t.tetley Website

 
 
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Location

 

109Sir Alexander Fleming BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Kendall:2004:10.1080/08958370490443204,
author = {Kendall, M and Guntern, J and Lockyer, NP and Jones, FH and Hutton, BM and Lippmann, M and Tetley, TD},
doi = {10.1080/08958370490443204},
journal = {Inhal Toxicol},
pages = {115--129},
title = {Urban PM2.5 surface chemistry and interactions with bronchoalveolar lavage fluid.},
url = {http://dx.doi.org/10.1080/08958370490443204},
volume = {16 Suppl 1},
year = {2004}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - This study investigated the surface chemistry of urban fine particles (PM(2.5)), and quantified the adsorbed and desorbed species after exposure to bronchoalveolar lavage fluid (BALF). Urban background and roadside PM(2.5) samples of different mass concentration and total weight were collected in triplicate in the South Bronx region of New York City. Simultaneously, the concentrations of other atmospheric pollutants (CO, NO(x), SO(2), O(3), elemental carbon) were measured, and weather conditions were recorded. The collected PM(2.5) samples underwent one of three treatments: no treatment, treatment in vitro with BALF, or treatment in a saline solution (control). The surfaces of untreated, saline-treated, and BALF-treated PM(2.5) samples were analyzed using x-ray photoelectron spectroscopy (XPS) and time-of-flight secondary ion mass spectrometry (ToF-SIMS). These results were then compared with ambient air pollutant concentrations, weather variables, selected BALF characteristics, and results from a previous London study conducted using identical preparation methods by XPS analysis only. Both XPS and ToF-SIMS detected PM(2.5) surface species and observed changes in surface concentrations after treatment. XPS analysis showed the surface of untreated urban PM(2.5) consisted of 79 to 87% carbon and 10 to 16% oxygen with smaller contributions of N, S, Si, and P in the samples from both background and roadside locations. A wider variety of other inorganic and organic species (including metals, aliphatic and aromatic hydrocarbons, and nitrogen-containing molecules) was detected with ToF-SIMS. Surface characteristics of particles from the roadside and background sites were very similar, except for higher (p <.05) nitrate concentrations at the roadside, which were attributable to higher roadside NO(x) concentrations. Comparable species and quantities were identified in a previous study of London PM(2.5), where PM(2.5) surface chemistry differed considerably depending on th
AU  - Kendall,M
AU  - Guntern,J
AU  - Lockyer,NP
AU  - Jones,FH
AU  - Hutton,BM
AU  - Lippmann,M
AU  - Tetley,TD
DO  - 10.1080/08958370490443204
EP  - 129
PY  - 2004///
SN  - 0895-8378
SP  - 115
TI  - Urban PM2.5 surface chemistry and interactions with bronchoalveolar lavage fluid.
T2  - Inhal Toxicol
UR  - http://dx.doi.org/10.1080/08958370490443204
UR  - https://www.ncbi.nlm.nih.gov/pubmed/15204800
VL  - 16 Suppl 1
ER  -
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