Ir and Rare Earth's Elements determination by Neutron Activation Analysis and ICP - MS in soil samples

The Characteristics, Occurrence, and Geochemical Behavior of Rare Earth Elements in the Environment: A Review

“…An increased number of REE determinations in geologic, environmental, biological, and various advanced materials has been possible due to rapid developments in mass spectrometry techniques using single collector sector-field or Downloaded by [Laurentian University] at 16:05 07 December 2014 quadrupole inductively coupled mass spectrometer, ICP-MS, and multicollector inductively coupled plasma mass spectrometer, MC-ICP-MS along with the most precise technique, isotope dilution thermal ionization mass spectrometry, ID-TIMS (e.g., Lichte et al, 1987;Baker et al, 2002;Kent et al, 2004;Merten and Büchel, 2004;Wieser and Schwieters, 2005). The REEs have also been measured using instrumental neutron activation analysis, INAA (e.g., Wiedenbeck et al, 1995;Salvini et al, 2006) since the first reported study on the REE concentrations in seawater (Goldberg et al, 1963). However, due to some constraints, this method has been replaced by different ICP-MS techniques.…”