Skip to main content
Log in

Rapid separation of VI/VII technetium oxidation states by solvent extraction with iodonitrotetrazolium chloride

  • Published:
Journal of Radioanalytical and Nuclear Chemistry Aims and scope Submit manuscript

Abstract

Technetium99 poses a difficult problem at many nuclear waste disposal sites, as there have been multiple incidents of its release to the environment due to large quantities of fission products disposed in storage tanks. Tc is mostly present under two oxidation states, Tc(VII) and Tc(IV) and the separation of Tc(IV) from Tc(VII) is often crucial for laboratory-scale work performed for the study of Tc. This work offers a method for the rapid separation of Tc(IV) from Tc(VII), using a solvent extraction system containing iodonitrotetrazolium chloride and chloroform.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Fig. 1
Fig. 2
Fig. 3

Similar content being viewed by others

References

  1. Fredrickson JK, Zachara JM, Plymale AE, Heald SM, McKinley JP, Kennedy DW, Liu CX, Nachimuthu P (2009) Oxidative dissolution potential of biogenic and ablogenic TcO2 in subsurface sediments. Geochim Cosmochim Acta 73(8):2299–2313

    Article  CAS  Google Scholar 

  2. Gu B, Dong W, Liang L, Wall NA (2011) Dissolution of technetium(IV) oxide by natural and synthetic organic ligands under both reducing and oxidizing conditions. Environ Sci Technol 45(11):4771–4777

    Article  CAS  Google Scholar 

  3. Kincaid CT, Eslinger PW, Aaberg RL, Miley TB, Nelson IC, Strenge DL, Evans JC (2006) Inventory data package for Hanford assessments. Pacific Northwest National Laboratory, Richland

    Book  Google Scholar 

  4. Lukens WW, Shuh DK, Schroeder NC, Ashley KR (2004) Identification of the non-pertechnetate species in Hanford waste tanks, Tc(I)-carbonyl complexes. Environ Sci Technol 38(1):229–233

    Article  CAS  Google Scholar 

  5. Lukens W, Shuh D, Schroeder N, Ashley K (2003) Behavior of technetium in alkaline solution: identification of nonpertechnetate species in Hanford waste tanks. Abstr Pap Am Chem Soc 226:U90–U90

    Google Scholar 

  6. Bernard JG, Bauer E, Richards MP, Arterburn JB, Chamberlin RM (2001) Catalytic reduction of pertechnetate [(TcO4 )-Tc-99] in simulated alkaline nuclear wastes. Radiochim Acta 89(1):59–61

    Article  CAS  Google Scholar 

  7. Xia YX, Hess NJ, Felmy AR (2006) Stability constants of technetium(IV) oxalate complexes as a function of ionic strength. Radiochim Acta 94(3):137–141

    Article  CAS  Google Scholar 

  8. Hess NJ, Qafoku O, Xia YX, Moore DA, Felmy AR (2008) Thermodynamic model for the solubility of TcO2 center dot xH(2)O in aqueous oxalate systems. J Solution Chem 37(11):1471–1487

    Article  CAS  Google Scholar 

  9. Kamburova M, Nikolov N, Nikolov A (1993) Solvent-extraction of mercury with iodonitrotetrazolium chloride. Chem Anal (Warsaw) 38(2):161–167

    CAS  Google Scholar 

  10. Sirneonova ZJ, Gavazov KB, Alexandrov AV (2006) Extraction-spectrophotometric study on the vanadium(V)-2,3-dihydroxynaphthalene–iodonitrotetrazolium chloride–water–chloroform system and its analytical application. Cent Eur J Chem 4(2):258–265

    Article  Google Scholar 

  11. Simeonova Z, Alexandrov A (1996) Extraction of rhenium(IV) and rhenium(VII) with iodonitrotetrazolium chloride. Anal Lab 5(4):260–262

    Google Scholar 

  12. Maset ER, Sidhu SH, Fisher A, Heydon A, Worsfold PJ, Cartwright AJ, Keith-Roach MJ (2006) Effect of organic co-contaminants on technetium and rhenium speciation and solubility under reducing conditions. Environ Sci Technol 40(17):5472–5477

    Article  CAS  Google Scholar 

  13. Boggs MA, Dong W, Gu B, Wall NA (2010) Complexation of Tc(IV) with acetate at varying ionic strength. Radiochim Acta 98:583–587

    Article  CAS  Google Scholar 

  14. Boggs MA, Minton T, Dong W, Lomasney S, Islam MR, Gu B, Wall NA (2011) Interactions of Tc(IV) with humic substances. Environ Sci Technol 45(7):2718–2724

    Article  CAS  Google Scholar 

  15. Hess NJ, Xia YX, Rai D, Conradson SD (2004) Thermodynamic model for the solubility of TcO2.xH(2)O(am) in the aqueous Tc(IV)-Na + -Cl–H + -OH–H2O system. J Solution Chem 33(2):199–226

    Article  CAS  Google Scholar 

  16. Boggs MA, Islam MR, Dong W, Wall N (2011) Complexation of Tc(IV) with EDTA at varying ionic strength of NaCl Radiochem (in press)

  17. Shehatta I, Kiwan A (2001) Thermodynamics of dissociation and metal complexation of 3-nitro-1,5-diphenylformazan. J Solution Chem 30(4):389–400

    Article  CAS  Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to Nathalie A. Wall.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Boggs, M.A., Gribat, L.C., Boele, C.A. et al. Rapid separation of VI/VII technetium oxidation states by solvent extraction with iodonitrotetrazolium chloride. J Radioanal Nucl Chem 293, 843–846 (2012). https://doi.org/10.1007/s10967-012-1744-8

Download citation

  • Received:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s10967-012-1744-8

Keywords

Navigation