Leaves of Quercus ilex L. as biomonitors of PAHs in the air of Naples (Italy)

Leaves of Quercus ilex L. as biomonitors of PAHs in the air of Naples (Italy) Polycyclic aromatic hydrocarbons (PAHs) were determined by the GC-MS chromatography in the leaves of Quercus ilex L., an evergreen Mediterranean oak, to monitor the degree of pollution in the urban area of Naples compared to remote areas. Leaf samples were collected in July 1998 from four urban parks, six roadsides and two sites in remote areas. The total PAH contents in Q. ilex leaves ranged from 106.6 in a control site to 4607.5 ng/g d.w. along a road with a high traffic flow. The mean concentration factors (urban/control) were 3.8 for the parks and 15 for the roads. The contribution of carcinogenic PAHs (benz(a)anthracene, benzo(b)fluoranthene, benzo(k)fluoranthene, benzo(a)pyrene, dibenz(a,h)anthracene, indeno(1,2,3-c,d)pyrene) was higher in urban area and differed according to the site, ranging from 6.7% to 21.3%. The total PAH burden in control sites was dominated by the low molecular weight PAHs, whilst along the urban roads fluoranthene, pyrene and benz(a)anthracene among the measured PAHs showed the highest values. PAHs were positively correlated ( P <0.01) to trace metals measured in a previous study. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Atmospheric Environment Elsevier

Leaves of Quercus ilex L. as biomonitors of PAHs in the air of Naples (Italy)

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Publisher
Elsevier
Copyright
Copyright © 2001 Elsevier Science Ltd
ISSN
1352-2310
eISSN
1873-2844
DOI
10.1016/S1352-2310(01)00087-5
Publisher site
See Article on Publisher Site

Abstract

Polycyclic aromatic hydrocarbons (PAHs) were determined by the GC-MS chromatography in the leaves of Quercus ilex L., an evergreen Mediterranean oak, to monitor the degree of pollution in the urban area of Naples compared to remote areas. Leaf samples were collected in July 1998 from four urban parks, six roadsides and two sites in remote areas. The total PAH contents in Q. ilex leaves ranged from 106.6 in a control site to 4607.5 ng/g d.w. along a road with a high traffic flow. The mean concentration factors (urban/control) were 3.8 for the parks and 15 for the roads. The contribution of carcinogenic PAHs (benz(a)anthracene, benzo(b)fluoranthene, benzo(k)fluoranthene, benzo(a)pyrene, dibenz(a,h)anthracene, indeno(1,2,3-c,d)pyrene) was higher in urban area and differed according to the site, ranging from 6.7% to 21.3%. The total PAH burden in control sites was dominated by the low molecular weight PAHs, whilst along the urban roads fluoranthene, pyrene and benz(a)anthracene among the measured PAHs showed the highest values. PAHs were positively correlated ( P <0.01) to trace metals measured in a previous study.

Journal

Atmospheric EnvironmentElsevier

Published: Jul 1, 2001

References

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