Assessing the Microscale Heterogeneity in Candidate Standard Reference Material 4600: Surrogate Post-detonation Urban Debris
Jacqueline L. Mann, John L. Molloy, Mark Tyra, Kevin Pfeuffer, Barbara Fallon, JoAnn Buscaglia
Nondestructive microbeam X-ray fluorescence (µXRF) spectrometry has been used to investigate the elemental microheterogeneity in a candidate nuclear forensics reference material (RM), NIST SRM 4600: Surrogate Post-detonation Urban Debris. Using a principal component analysis (PCA) model, results indicate that the majority of elements appear homogeneous; however, zinc (Zn) exhibits microscale (< 400 µg) heterogeneity for this candidate SRM. To minimize contributions to the measurement uncertainty from elemental microheterogeneity, a minimum sample mass of 24 mg is recommended for analysis.
, Molloy, J.
, Tyra, M.
, Pfeuffer, K.
, Fallon, B.
and Buscaglia, J.
Assessing the Microscale Heterogeneity in Candidate Standard Reference Material 4600: Surrogate Post-detonation Urban Debris, Applied Radiation and Isotopes, [online], https://doi.org/10.1016/j.apradiso.2021.109651, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=930656
(Accessed September 22, 2023)