Remarkably constant PAH concentrations in Swiss soils over the last 30 years

Environmental Science. Processes & Impacts
Andreas GublerThomas D Bucheli

Abstract

Although polycyclic aromatic hydrocarbons (PAH) are of concern due to their carcinogenic, mutagenic, and teratogenic properties and their ubiquitous occurrence in environmental compartments, only few studies assessed the temporal evolutions of PAH contents of soils over extended time periods. The Swiss Soil Monitoring Network NABO runs long-term monitoring sites resampled every five years since the 1980s. In the present study, soil (0-20 cm) samples collected from 1985 through 2013 at 25 selected monitoring sites were analysed for the 16 priority PAH according to the U.S. EPA and five PAH marker substances. We observed divergent trends for light PAH, such as naphthalene and phenanthrene, compared with heavy PAH, such as benzo[a]pyrene and benzo[ghi]perylene. Whereas the former showed decreasing concentrations since the late 1980s, no significant trends were found for the latter. Furthermore, the analyses showed that naphthalene contents decreased most strongly at rural sites featuring low population densities, while phenanthrene contents generally decreased most strongly at semi-rural sites. The deviating evolutions of light and heavy PAH were mainly attributed to their differing physico-chemical properties. Temporal evolutions...Continue Reading

References

May 12, 2007·Journal of Environmental Monitoring : JEM·Rahel C BrändliJoseph Tarradellas
Aug 23, 2008·Chemosphere·Barbara Maliszewska-KordybachHenryk Terelak
Nov 1, 2008·Journal of Environmental Monitoring : JEM·André DesaulesArmin Keller
Nov 1, 2008·Journal of Environmental Monitoring : JEM·Rahel C BrändliWerner A Stahel
Mar 17, 2009·Environmental Pollution·D J BrusR H Nieuwenhuis
May 11, 2013·Environmental Science & Technology·Huizhong ShenShu Tao
Sep 10, 2013·Environment International·Ki-Hyun KimRichard J C Brown
Sep 10, 2014·Environmental Pollution·Kirsi KuoppamäkiD Johan Kotze

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Citations

Apr 2, 2017·Environmental Science and Pollution Research International·Dayana SosaThomas D Bucheli
Jan 31, 2017·The Science of the Total Environment·Melanie BläsingEva Lehndorff
Aug 23, 2017·Environmental Science & Technology·Aurea C Chiaia-HernandezMartin Krauss

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