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Spårämnen i alunskiffer, rödfyrshögar och björkträd vid Andrarums alunbruk, Skåne

Pettersson, Anna LU (2011) MVEK02 20111
Studies in Environmental Science
Abstract
Handheld XRF-technique has been used to measure the occurrence of potentially toxic trace elements in outcrops of alum shale, heaps of burnt alum shale, and birch trees at Andrarum, southeastern Scania, Sweden. Results showed that both types of shale contain substantial amounts of problematic trace elements, such as As, Ba, Co, Cr, Cu, Mo, Ni and V. Most of these showed higher concentrations in burnt alum shale compared to non-burnt shale. This may partly be explained by natural leaching and weathering of exposed alum shale, and concentration effects during burning of the shale. The high levels of trace elements could be a threat to human health, however, people are only visiting the area sporadically and therefore the risks are considered... (More)
Handheld XRF-technique has been used to measure the occurrence of potentially toxic trace elements in outcrops of alum shale, heaps of burnt alum shale, and birch trees at Andrarum, southeastern Scania, Sweden. Results showed that both types of shale contain substantial amounts of problematic trace elements, such as As, Ba, Co, Cr, Cu, Mo, Ni and V. Most of these showed higher concentrations in burnt alum shale compared to non-burnt shale. This may partly be explained by natural leaching and weathering of exposed alum shale, and concentration effects during burning of the shale. The high levels of trace elements could be a threat to human health, however, people are only visiting the area sporadically and therefore the risks are considered small. Grazing sheep in the area are likely more vulnerable than humans. XRF-measurements on tree cores turned out to be problematic, since only a few trace elements (Mo, Sr, U, Zn, Zr) were repeatedly detected with the instrument. Of these elements, Mo, U and Zr occur in similar concentrations both within and between tree cores from different substrates, including control area. The concentration of Zn is consistently highest in the center of trees, and thereafter decreases. Sr displays a slight decline. (Less)
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author
Pettersson, Anna LU
supervisor
organization
course
MVEK02 20111
year
type
M2 - Bachelor Degree
subject
language
Swedish
id
2831553
date added to LUP
2012-06-21 09:58:49
date last changed
2012-08-10 10:30:17
@misc{2831553,
  abstract     = {Handheld XRF-technique has been used to measure the occurrence of potentially toxic trace elements in outcrops of alum shale, heaps of burnt alum shale, and birch trees at Andrarum, southeastern Scania, Sweden. Results showed that both types of shale contain substantial amounts of problematic trace elements, such as As, Ba, Co, Cr, Cu, Mo, Ni and V. Most of these showed higher concentrations in burnt alum shale compared to non-burnt shale. This may partly be explained by natural leaching and weathering of exposed alum shale, and concentration effects during burning of the shale. The high levels of trace elements could be a threat to human health, however, people are only visiting the area sporadically and therefore the risks are considered small. Grazing sheep in the area are likely more vulnerable than humans. XRF-measurements on tree cores turned out to be problematic, since only a few trace elements (Mo, Sr, U, Zn, Zr) were repeatedly detected with the instrument. Of these elements, Mo, U and Zr occur in similar concentrations both within and between tree cores from different substrates, including control area. The concentration of Zn is consistently highest in the center of trees, and thereafter decreases. Sr displays a slight decline.},
  author       = {Pettersson, Anna},
  language     = {swe},
  note         = {Student Paper},
  title        = {Spårämnen i alunskiffer, rödfyrshögar och björkträd vid Andrarums alunbruk, Skåne},
  year         = {2011},
}