Comparison of the relative comparator and k₀neutron activation analysis techniques for the determination of trace-element concentrations in pyrite

Abstract

Thirty pyrite samples from a wide range of localities were analysed using relative comparator and k 0 neutron activation analysis (NAA) techniques at the University of Missouri Research Reactor, Columbia, Missouri, USA (MURR) and the Australian Nuclear Science and Technology Organisation, Lucas Heights, NSW, Australia (ANSTO), respectively. Statistical analyses of the trace-element data produced by the two methods showed a generally good correlation, with the majority of elemental concentrations of paired data reported by MURR and ANSTO being indistinguishable at a 0.05 significance level. Trace-element analyses of pyrite from Navajú n in Spain by both techniques compare well with published data. There is evidence for contamination by Al, Na and Ti in one set of samples, this is likely to have been introduced by contact with a plastic used in sample preparation.

Caracterización electroquímica del proceso de degradación de materiales piritosos en colecciones geológicas y paleontológicas: propuestas de tratamiento y conservación

“…Uno de los minerales más comunes de las colecciones geológicas, y que aparece con frecuencia en algunos grupos fósiles, es la pirita, o disulfuro de hierro (II) (FeS 2 ), siendo también uno de los minerales más abundantes del planeta dentro de su grupo (Birker & Kaylor, 1986;Howie, 1977Howie, , 1992Waller, 1989;Newman, 1998;Fellowes & Hagan, 2003;Evangelou & Zhang, 1995;Larkin, 2011, Osborne et al, 2012. En su estado natural, la pirita es un mineral de un color amarillo metálico pálido.…”

Neutron scattering and microscopy studies of the structure and dynamics of water near a nanostructured hydrophilic copper oxide surface

“…MURR is a medium-power, light-water cooled/moderated research reactor designed to support the research, education, and service mission of the University of Missouri. As a reliable resource, MURR supports many branches of research including neutron scattering [130,168,174,[177][178], neutron activation analysis [179], radioisotope production [180][181], radiation therapy [182], archaeometry [183], and nuclear forensics [184] to cite a few applications. As illustrated in Fig.…”