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Comparing different pre-treatment methods for strongly compacted organic sediments prior to wet-sieving: a case study on Roman waterlogged deposits

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  • Patricia Vandorpe
  • Stefanie Jacomet

Abstract

Four pre-treatment methods have been tested on strongly compacted organic sediments prior to sieving. They comprise heating, freezing, soaking in NaHCO3 (sodium bicarbonate) and heating with 10% KOH (potassium hydroxide). The aim of the experiment was to find out which pre-treatment method facilitates the sieving process without destroying the waterlogged plant remains recovered. Several methods are already described in the literature, but only few systematic comparisons of pre-treatment methods were undertaken. Of the four techniques tested, freezing the samples prior to sieving came out as the best option; it eases sieving and has the least damaging impact on the waterlogged plant remains. In addition, it is fast, uncomplicated and does not leave any chemical waste.

Suggested Citation

  • Patricia Vandorpe & Stefanie Jacomet, 2007. "Comparing different pre-treatment methods for strongly compacted organic sediments prior to wet-sieving: a case study on Roman waterlogged deposits," Environmental Archaeology, Taylor & Francis Journals, vol. 12(2), pages 207-214, October.
    • Handle: RePEc:taf:yenvxx:v:12:y:2007:i:2:p:207-214
    DOI: 10.1179/174963107x226462
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