Use of the DCB Technique for Extraction of Hydrous Iron Oxides from Roots of Wetland Plants.

• Author(s) / Creator(s)

  • Crowder, A.A.
  • Taylor, G.J.

• Replicate samples of Phragmites communis roots coated with hydrous iron oxide were analyzed for internal and external Fe using the dithionite-citrate-bicarbonate technique (hot DCB), a modified DCB technique (cold DCB), Ethylenediaminete traacetic acid (EDTA), Diethylenetriamine pentaacetic acid (DTPA), and a total Fe analysis. EDTA and DTPA were found to be inefficient in extracting FeOOH while both DCB techniques were efficient. Concentrations of Fe extracted (8.93% and 9.37% by weight) and percent of total Fe extracted (98.3% and 98.6%) by the hot and cold DCB techniques (respectively) were not significantly different. Results of the total Fe analysis (8.58% Fe by weight) were the same as extracted Fe and total Fe determined by the DCB techniques. This may reflect the large external Fe: internal Fe ratio of the sample roots. Despite equivalent results the cold DCB technique is preferred over the hot DCB technique due to a reduced likelihood of structural damage to roots

• Date created

  1983

• Subjects / Keywords

  • Iron
  • DCB technique
  • Phragmites communis

• Type of Item

  Article (Published)

• DOI

  https://doi.org/10.7939/R3RN30J7X

• License

  This version of this article is open access and can be downloaded and shared. The original author(s) and source must be cited.