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  • Ramzan, Muhammad; Kifle, Dejene & Wibetoe, Grethe (2017). A rapid impregnation method for loading desired amounts of extractant on prepacked reversed-phase columns for high performance liquid chromatographic separation of metal ions. Journal of Chromatography A.  ISSN 0021-9673.  1500, s 76- 83 . doi: 10.1016/j.chroma.2017.04.005
  • Ramzan, Muhammad; Kifle, Dejene & Wibetoe, Grethe (2016). Comparative study of stationary phases impregnated with acidic organophosphorus extractants for HPLC separation of rare earth elements. Separation science and technology (Print).  ISSN 0149-6395.  51(3), s 494- 501 . doi: 10.1080/01496395.2015.1112400
  • Kifle, Dejene; Sverdrup, Harald; Koca, Deniz & Wibetoe, Grethe (2013). A Simple Assessment of Global Long Term Supply of the Rare Earth Elements by Using a System Dynamics Model. Environment and Natural Resources Research.  ISSN 1927-0488.  3(1), s 77- 91
  • Kifle, Dejene & Wibetoe, Grethe (2013). Retention and elution of precious metals on cyano-modified solid phase microparticle sorbent. Mikrochimica Acta.  ISSN 0026-3672.  180(11-12), s 981- 987 . doi: 10.1007/s00604-013-1019-2
  • Kifle, Dejene & Wibetoe, Grethe (2013). Selective liquid chromatographic separation of yttrium from heavier rare earth elements using acetic acid as a novel eluent. Journal of Chromatography A.  ISSN 0021-9673.  1307, s 86- 90 . doi: 10.1016/j.chroma.2013.07.070
  • Kifle, Dejene; Wibetoe, Grethe; Frøseth, Morten & Bigelius, Jonas (2013). Impregnation and Characterization of High Performance Extraction Columns for Separation of Metal Ions. Solvent extraction and ion exchange.  ISSN 0736-6299.  31(6), s 668- 682 . doi: 10.1080/07366299.2013.806737 Show summary
  • Ojala, Frida; Max-Hansen, Mark; Kifle, Dejene; Borg, Niklas & Nilsson, Bernt (2012). Modelling and optimisation of preparative chromatographic purification of europium. Journal of Chromatography A.  ISSN 0021-9673.  1220, s 21- 25 . doi: 10.1016/j.chroma.2011.11.028
  • Max-Hansen, Mark; Ojala, Frida; Kifle, Dejene; Borg, Niklas & Nilsson, Bernt (2011). Optimization of preparative chromatographic separation of multiple rare earth elements. Journal of Chromatography A.  ISSN 0021-9673.  1218(51), s 9155- 9161 . doi: 10.1016/j.chroma.2011.10.062

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  • Varonina, Sviatlana; Wibetoe, Grethe & Kifle, Dejene (2017). Determination of REEs, Th, and U in Seawater after Off-Line SPE by ICP-MS.
  • Nguyen, Viet Hung; Kifle, Dejene & Wibetoe, Grethe (2014). Elimination of molecular interferences when using QP-ICP-MS: Determination of fifteen rare Earth elements in europium- and ytterbium matrices utilizing ICP-MS and HPLC-ICP-MS.
  • Ramzan, Muhammad; Kifle, Dejene & Wibetoe, Grethe (2014). Separation of lanthanoides on reverse phase columns modified with various ligands: Utilizing ICP-MS as detector.
  • Kifle, Dejene; Wibetoe, Grethe & Frøseth, Morten (2013). Separation of rare earth elements and other precious metals by high performance liquid chromatography and solid phase extraction: Development of methodologies for analyses and potential preparative use.
  • Nguyen, Viet Hung; Wibetoe, Grethe & Kifle, Dejene (2013). Development of methods for the determination of rare earth elements as trace impurities in high-purity rare earth oxides and rare earth elements by ICP-MS and HPLC-ICP-MS. Show summary
  • Wibetoe, Grethe; Kifle, Dejene & Nguyen, Viet Hung (2013). Bestemmelse av sjeldne jordartsmetaller med ICP-MS.

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Published Nov. 11, 2010 9:00 AM - Last modified Sep. 24, 2012 12:53 PM