Application of a new ultrasound-assisted method to extract organic fractions from peat

Ho, P., Jarvis, M. and MacKinnon, G. (2010) Application of a new ultrasound-assisted method to extract organic fractions from peat. Oculus, 21(Spring), pp. 95-100.

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Abstract

The aim of this study was to apply a novel ultrasound assisted method for extracting humic substances from marine sediments (Moreda-Piñeiro et al., 2004) to extract organic fractions from peat. The peat in this study came from Flanders Moss National Nature Reserve, an ombrotrophic peatland. The application of ultrasound to accelerate humic acid and lipid extraction was investigated and the results compared with the conventional extraction methods in terms of gravimetric analysis and characterisation by Fourier Transform Infrared spectroscopy. On a gravimetric basis, significantly more lipid material was extracted from peat using the new ultrasound assisted method compared with the more traditional Soxhlet method. In addition, the range of organic compounds extracted from this material was increased. Significantly less humic acid material was extracted from peat using the ultrasound assisted method when compared with a conventional alkali extraction. However, the composition of humic acids extracted was similar, suggesting this method may provide a fast and effective alternative to the lengthy extractions currently used.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:MacKinnon, Dr Gillian and Jarvis, Dr Michael
Authors: Ho, P., Jarvis, M., and MacKinnon, G.
Subjects:G Geography. Anthropology. Recreation > GE Environmental Sciences
College/School:College of Science and Engineering > Scottish Universities Environmental Research Centre
Journal Name:Oculus
Publisher:American Institute of Architects
ISSN:0885-5927
Published Online:01 January 2010

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