Environmental Engineering Reference
In-Depth Information
site 4 TSP
site 4 TSP
site 5 night
site 5 night
site 5 day
site 5 day
site 4 night
site 4 night
site 4 day
site 4 day
site 3 night
site 3 night
site 3 day
site 3 day
site 2 night
site 2 night
Pb
Pb
site 2 day
site 2 day
site 1 night
site 1 night
Zn
Zn
site 1 day
site 1 day
0
0,5
1
0
2000
4000
6000
µg/m
3
µg/g
Fig. 4
Medians of Pb and Zn concentrations relative to air volume (µg/m
3
) and to aerosol mass
(µg/g) at the five PM
2.5
sampling stations and the TSP sampling station for the period from
September 2005 till end of 2006
time of high aerosol concentrations caused by anthropogenic emission processes.
PM
2.5
concentrations during night are in average equal to those during day. Indicator
elements help to understand the different roles of geogenic and anthropogenic
sources contributing to the aerosol pollution in Beijing. Futhermore, beside
the PM
2.5
mass concentrations, health studies should consider harmful metal con-
centrations, but not only calculated as µg/m
3
but also as µg/g. This kind of relation
provides important additional information for the assessment of the particular
chemistry of single particles.
Acknowledgements
Thanks to all colleagues of the China Research Academy of Environmental
Sciences, who have collected the samples for such a long period. Additionally the authors thank
the technical staff of the Institute of Mineralogy and Geochemistry (Norbert Bauer, Bernd
Grunvinck, Inna Haag, Cornelia Haug, Pirimze Lakashvilli, Claudia Mössner, Peter Schaupp,
Heinz Vögele) for numerous support with respect to sampling technology and chemical analyses.
Finally, the German Research Foundations is gratefully mentioned for funding this project.
References
1. Kappos A, Bruckmann P, Eikmann T, Englert N, Heinrich U, Höppe U, Koch E, Metz N,
Rauchfuss K, Rombout P, Schabronath J, Schulz-Klemp V, Spallek MF, Wichmann H-E,
Kreyling WG, Krause GHM (2003) Bewertung des aktuellen wissenschaftlichen Kenntnisstandes
zur gesundheitlichen Wirkung von Partikeln in der Luft. Umweltmedizin in Forschung und
Praxis 8:257-278
