title: Determination of chromium in biological materials by radiochemical neutron activation analysis (RNAA) using manganese dioxide.
abstract: A procedure based on radiochemical neutron activation analysis was developed for the determination of chromium in biological materials. The procedure consists of irradiation of reference and test samples in a nuclear reactor, microwave sample digestion, selective and quantitative radiochemical separations of chromium and gamma-ray spectrometric measurement of51Cr. Separation of chromium from the accompanying elements was done on the column packed with inorganic resin MnO2Resin. Distribution coefficients of Cr, Zn, Co, Cs and Sc were determined in the system: MnO2Resin-HCl, HNO3and H2SO4. Accuracy of the procedure was checked by analysis of certified reference materials.
authors.affiliation: Laboratory of Nuclear Analytical Methods, Institute of Nuclear Chemistry and Technology, Dorodna 16, 03-195 Warsaw, Poland.
authors.forename: Iga
authors.initials: I
authors.lastname: Kużelewska
authors.affiliation: Laboratory of Nuclear Analytical Methods, Institute of Nuclear Chemistry and Technology, Dorodna 16, 03-195 Warsaw, Poland.
authors.forename: Halina
authors.initials: H
authors.lastname: Polkowska-Motrenko
authors.affiliation: Laboratory of Nuclear Analytical Methods, Institute of Nuclear Chemistry and Technology, Dorodna 16, 03-195 Warsaw, Poland.
authors.forename: Bożena
authors.initials: B
authors.lastname: Danko
keywords: Chromium; Inorganic resin; Manganese dioxide; Radiochemical neutron activation analysis; Radiochemical separation