Spårämnen i alunskiffer, rödfyrshögar och björkträd vid Andrarums alunbruk, Skåne
(2011) MVEK02 20111Studies 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)
Please use this url to cite or link to this publication:
http://lup.lub.lu.se/student-papers/record/2831553
- author
- Pettersson, Anna LU
- supervisor
- organization
- course
- MVEK02 20111
- year
- 2011
- 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}}, }