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Avena Sativa - En hyperackumulator?: En studie av havres kadmiumupptag
Jönköping University, School of Engineering, JTH, Chemical Engineering. Jönköping University, School of Education and Communication, HLK, Disciplinary Research.
Jönköping University, School of Education and Communication, HLK, Disciplinary Research. Jönköping University, School of Engineering, JTH, Chemical Engineering.
2009 (Swedish)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesisAlternative title
Avena Sativa - A Hyper Accumulator? (English)
Abstract [en]

The aim of our research was to investigate if oat is capable of extracting cadmium to such extent that it is usable in decontaminating polluted soils. We grew oat in a hydroponic culture during 28 days in a controlled environment and a total of 30 plants were used. The nutrient solutions were contaminated with cadmium of ten different concentrations after seven days. After harvesting the plants, the roots were separated from the shoots, placed in separate containers and then turned to ashes. The cadmium content was measured three times per sample in an atomic absorption spectrometer.

Our results indicate that the ability of oat to extract cadmium from a solution is linearly dependent of the cadmium concentration of the solution. We also noted that the resistivity to cadmium of oat is limited. When the concentration of accessible cadmium ions exceeded 0,06mM, a significant difference of the shoot growth appeared. The results we obtained from shoots and roots show cadmium amounts much higher in the roots than the shoots. Despite this difference there were sufficient amounts of cadmium in the shoots to call oat a hyper accumulator. This means that oat fulfills one of the criteria of a phytoextractor.

Place, publisher, year, edition, pages
2009. , 31 p.
Keyword [sv]
fytoremediering, fytoextraktion, havre, kadmium, hydroponiskt medium, förorenad mark, reningsmetod, avena sativa
National Category
Environmental Sciences
Identifiers
URN: urn:nbn:se:hj:diva-7799OAI: oai:DiVA.org:hj-7799DiVA: diva2:159665
Presentation
, Jönköping (Swedish)
Uppsok
fysik/kemi/matematik
Supervisors
Examiners
Available from: 2009-03-18 Created: 2009-02-09 Last updated: 2009-03-18Bibliographically approved

Open Access in DiVA

fulltext(5296 kB)315 downloads
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Type fulltextMimetype application/pdf

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
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