Is extraction of Fe from iron based reference materials an appropriate method for determination of trace elements?
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Milena Taseska
Abstract
Various trace elements in different types of iron based geological reference materials [JSS 804-1 (hematite), JSS 820-2 (limonite), SU-1 and SU-1a (iron-nickel-copper-cobalt ores)] were investigated using k0-instrumental neutron activation analysis (k0-INAA). To avoid the interference of iron as the matrix element, a liquid–liquid extraction procedure with diisopropyl ether (DIPE) in hydrochloric acid solution and determination of trace elements in the inorganic phase was undertaken prior to irradiation. The k0-INAA method, applied to determine the content of the investigated elements, enabled the distribution of 39 elements to be followed through their corresponding intermediate/medium and long half-lived radionuclides. The possibility of determining the content of numerous trace elements after Fe separation is an important advantage of the proposed method. k0-INAA used to determine element s in the powdered materials and in liquid form after iron extraction enabled us to follow the losses and potential contamination of some elements in the liquid–liquid extraction process. Additionally, elimination of the matrix element lowered the detection limit for some trace elements compared to their corresponding values obtained by k0-INAA.
© by Oldenbourg Wissenschaftsverlag, SI-1001 Ljubljana, Germany
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Artikel in diesem Heft
- Editorial
- Historical Item
- Investigation of direct production of 68Ga with low energy multiparticle accelerator
- Potentiometric and spectrophotometric characterization of the UO22+-citrate complexes in aqueous solution, at different concentrations, ionic strengths and supporting electrolytes
- Decontamination of radioruthenium from TRUEX Solvent
- Studies on hydrolytic and radiolytic stability of N,N,N´,N´-tetra-(2-ethylhexyl) thiodiglycolamide T(2EH)TDGA
- Concentrations of 210Po in fish and shellfish from southern region of Japan and evaluation of 210Po intake from seafood for Japanese people
- Neutron activation analysis and atomic absorption spectrophotometry for the analysis of fresh, pasteurised and powder milk
- Is extraction of Fe from iron based reference materials an appropriate method for determination of trace elements?
