ORIGINAL RESEARCH
Spatial-Temporal Patterns of Element
Concentrations in Xanthoparmelia camtschadalis
Transplanted along Roads
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1
College of Life Sciences, Hebei University, Baoding, Hebei Province, China
2
Hebei Research Center for Geoanalysis, Baoding, Hebei Province, China
3
Baoding Meteorological Bureau, Hebei Province, China
Submission date: 2018-07-18
Final revision date: 2018-11-08
Acceptance date: 2018-11-21
Online publication date: 2019-08-28
Publication date: 2019-10-23
Corresponding author
Huajie Liu
College of Life Sciences, Hebei University, No. 180, Wusidong Road, Baoding, Hebei, China, 071002 Baoding, China
Pol. J. Environ. Stud. 2020;29(1):121-129
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ABSTRACT
Lichen transplantation is a powerful tool for monitoring the deposition of atmospheric elements
in areas devoid of native or expected lichens. The foliose lichen Xanthoparmelia camtschadalis (XPc)
was transplanted along two busy roads in Hebei, China, and was exposed for 3, 6, 9 and 12 months.
Twenty-five elements (Al, Ba, Cd, Ce, Cs, Cu, Fe, La, Mg, Mn, Na, Ni, Pb, Rb, S, Sb, Sc, Sm, Sr, Tb,
Th, Ti, Tl, V, and Zn) were measured using an inductively coupled plasma mass spectrometer (ICP-MS).
The concentrations of all elements were higher in post-exposure samples than in the control, suggesting
severe air pollution at the exposure sites. The temporal trends of the lichen S concentration were similar
to those of the atmospheric SO2 concentration. This result indicates that the release of SO2 during
the winter heating period elevated the lichen S concentrations, for which XPc had an integration time of
<3 months. Metal concentrations peaked after 9-month exposure at exposure sites near roads, whereas
they peaked after 12-month exposure at the other sites. This result indicates that the emissions near the
roads accelerated the accumulation of metals, for which XPc had an integration time of >3 months. Our
results confirmed the applicability of XPc for assessing the atmospheric pollution influenced by road
emissions in highly polluted regions.