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Degradation of Cypermethrin by indigenous bacteria in local industrial, beech- and spruce-forest soil
Halmstad University, School of Business and Engineering (SET).
2007 (English)Independent thesis Advanced level (degree of Master (One Year))Student thesis
Abstract [en]

Soil from local beech-forest, spruce-forest and an industrial area was taken. Control- and test-microcosms containing 150 ml soil were spiked with cypermethrin 0,4 mg/ml soil. Cypermethrin residues were extracted on day seven and 14.

Cyclohexane and deionized water was utilized in multiple step extraction processes. Samples were analyzed in a Gas Chromatograph (GC) with electron capture detector (ECD).

Concentration values for the samples were highest for beech-forest soil and lower for the other two soil-types. Statistical differences in concentrations between control- and test-microcosms for each soil-type on day seven and day 14 were evaluated with Mann Whitney U tests. Significant result was only found in the industrial 14-day group. The small amounts of cypermethrin in the extracts could not only be ascribed to a bacterial degradation process. Used insecticide has a high bonding affinity for particles and is sequestered in soil.

Place, publisher, year, edition, pages
Högskolan i Halmstad/Sektionen för Ekonomi och Teknik (SET) , 2007.
Keywords [en]
Pyrethroids, Cypermethrin, Soil-bacteria, Beech-forest soil, Spruce-forest soil, Industrial soil, Microcosms
Identifiers
URN: urn:nbn:se:hh:diva-944Local ID: 2082/1305OAI: oai:DiVA.org:hh-944DiVA, id: diva2:238162
Uppsok
Life Earth Science
Available from: 2007-09-07 Created: 2007-09-07 Last updated: 2007-09-07

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CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf