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Chlorpyrifos degradation in a biomixture of biobed at different maturity stages
RISE, SP – Sveriges Tekniska Forskningsinstitut, JTI Institutet för Jordbruks- och Miljöteknik.
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2012 (English)In: Chemosphere, ISSN 0045-6535, E-ISSN 1879-1298, Vol. 88, no 2, 224-228 p.Article in journal (Refereed)
Abstract [en]

The biomixture is a principal element controlling the degradation efficacy of the biobed. The maturity of the biomixture used in the biobed affects its overall performance of the biobed, but this is not well studied yet. The aim of this research was to evaluate the effect of using a typical composition of Swedish biomixture at different maturity stages on the degradation of chlorpyrifos. Tests were made using biomixture at three maturity stages: 0d (BC0), 15d (BC15) and 30d (BC30); chlorpyrifos was added to the biobeds at final concentration of 200, 320 and 480mgkg -1. Chlorpyrifos degradation in the biomixture was monitored over time. Formation of TCP (3,5,6-trichloro-2-pyrinidol) was also quantified, and hydrolytic and phenoloxidase activities measured. The biomixture efficiently degraded chlorpyrifos (degradation efficiency >50%) in all the evaluated maturity stages. However, chlorpyrifos degradation decreased with increasing concentrations of the pesticide. TCP formation occurred in all biomixtures, but a major accumulation was observed in BC30. Significant differences were found in both phenoloxidase and hydrolytic activities in the three maturity stages of biomixture evaluated. Also, these two biological activities were affected by the increase in pesticide concentration. In conclusion, our results demonstrated that chlorpyrifos can be degraded efficiently in all the evaluated maturity stages. © 2012 Elsevier Ltd.

Place, publisher, year, edition, pages
2012. Vol. 88, no 2, 224-228 p.
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Agricultural Science, Forestry and Fisheries
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URN: urn:nbn:se:ri:diva-2419DOI: 10.1016/j.chemosphere.2012.02.072PubMedID: 22440639Scopus ID: 2-s2.0-84860237939OAI: oai:DiVA.org:ri-2419DiVA: diva2:960009
Available from: 2016-09-07 Created: 2016-09-07 Last updated: 2017-11-21Bibliographically approved

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