Sulphate-Reducing Bacteria in Ground Water Samples from Olkiluoto: Analyzed by Quantitative PCR

Merja Itävaara, Maija-Leena Vehkomäki, Aura Nousiainen

Research output: Book/ReportReport

Abstract

The GEOFUNC Project is connected to safety and risk assessment research on the final disposal site of nuclear waste disposal. Sulphate-reducing micro-organisms, which are the major group of micro-organisms of concern, are able to cause copper corrosion by converting sulphate to sulphide, which is a very corrosive agent. The quantitative assessment of sulphate reducers by the qPCR method, which is based on sulphite reductase gene quantification, is related to the transformation of sulphate to sulphide. In this project we developed external and internal standard methods for our qPCR method in order to evaluate the quantitative amount and efficiency of DNA extractions and PCR inhibition possibly caused by high salt or iron concentrations. These standards are needed in quantifying and estimating the real quantity of sulphate reducers on the basis of their functional genes. Sulphate reducers were detected in all the samples studied. Based on this small dataset, no clear relationships were found between the geochemistry and the numbers of sulphate reducers, and the phenomena should be studied in more detail with more variable drillhole waters in the future.
Original languageEnglish
Place of PublicationEurajoki
PublisherPosiva
Number of pages50
Publication statusPublished - 2008
MoE publication typeD4 Published development or research report or study

Publication series

SeriesPosiva Working Report
Number2008-82

Keywords

  • Sulphate-reducing bacteria
  • quantitative PCR
  • Olkiluoto
  • Onkalo

Fingerprint Dive into the research topics of 'Sulphate-Reducing Bacteria in Ground Water Samples from Olkiluoto: Analyzed by Quantitative PCR'. Together they form a unique fingerprint.

  • Cite this