Change search
ReferencesLink to record
Permanent link

Direct link
Fröåtjärns föroreningshistoria: Utredning av hur metallbelastningen varierat över tid med hjälp av sediment som ett naturligt historiearkiv
Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
2014 (Swedish)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesisAlternative title
The pollution history of Fröåtjärn : how metals have varied over time (English)
Abstract [en]

The metal mining history goes thousands of years back. The downside of the mining industry is the large amount of tailings created during the mining operations. Drainage and leaching of heavy metals from these tailings may cause major environmental problems including acid mine drainage and leaching of heavy metals. This study examines a pond located near an old mining site, where part of the old mining facility has been recently (1990) restored. The objective was to assess eventual metal contamination from historical mining and the recently performed restoration using a sediment core as a natural archive of historical metal inputs to the pond. I found that the concentration of lead, copper, zinc and nickel were elevated in comparison to background levels in sediment. Elevated concentrations were found in the deep layer of the sediment core, 14-20 cm with an estimated age of ca 100 years. The highest concentrations were found near the surface (3-4 cm depth). Conclusion of the study was that the early mining operations has affected the ponds metal contamination history. The restoration of the mining site had weak impact on the pond, but may contribute to the high metal concentration in recent sediments. 

Place, publisher, year, edition, pages
2014. , 15 p.
Keyword [en]
metal mining, heavy metal drainage, sediment
National Category
Environmental Sciences
URN: urn:nbn:se:umu:diva-90598OAI: diva2:728815
Subject / course
Examensarbete i miljö och hälsoskydd
Educational program
Bachelor of Science in Environmental Health
Available from: 2014-06-25 Created: 2014-06-24 Last updated: 2014-06-25Bibliographically approved

Open Access in DiVA

fulltext(904 kB)149 downloads
File information
File name FULLTEXT01.pdfFile size 904 kBChecksum SHA-512
Type fulltextMimetype application/pdf

Search in DiVA

By author/editor
Lindqvist, Katrina
By organisation
Department of Ecology and Environmental Sciences
Environmental Sciences

Search outside of DiVA

GoogleGoogle Scholar
Total: 149 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Total: 94 hits
ReferencesLink to record
Permanent link

Direct link