期刊
ATMOSPHERIC ENVIRONMENT
卷 43, 期 7, 页码 1464-1473出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.atmosenv.2008.11.035
关键词
Mosses; Polycyclic aromatic hydrocarbons (PAHs); Trace elements; Baseline concentrations; Pollution sources; South-central Poland; Alaska
资金
- U.S. Geological Survey
- Mineral Resources Program
- Jan Kochanowski University in Kielce
Comparative biogeochemical studies performed on the same plant species in remote areas enable pinpointing interspecies and interregional differences of chemical composition. This report presents baseline concentrations of PAHs and trace elements in moss species Hylocomium splendens and Pleurozium schreberi from the Holy Cross Mountains (south-central Poland) (HCM) and Wrangell-Saint Elias National Park and Preserve (Alaska) and Denali National Park and Preserve (Alaska). Total PAH concentrations in the mosses of HCM were in the range of 473-2970 mu g kg(-1) (dry weight basis; DW), whereas those in the same species of Alaska were 80-3390 mu g kg(-1) DW. Nearly all the moss samples displayed the similar ring sequence: 3 > 4 > 5 > 6 for the PAHs. The 3 + 4 ring/total PAH ratios show statistically significant differences between HCM (0.73) and Alaska (0.91). The elevated concentrations of PAHs observed in some sampling locations of the Alaskan parks were linked to local combustion of wood, with a component of vehicle particle- and vapor-phase emissions. In HCM, the principal source of PAH emissions has been linked to residential and industrial combustion of coal and vehicle traffic. In contrast to HCM, the Alaskan mosses were distinctly elevated in most of the trace elements, bearing a signature of the underlying geology. H. splendens and P. schreberi showed diverse bioaccumulative capabilities of PAHs in all three study areas. (c) 2008 Elsevier Ltd. All rights reserved.
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