Abstract
In order to develop new reference materials for microanalytical nuclear techniques, the Scanning Proton Microprobe (SPM) technique was used to determine homogeneity levels within 100 × 200 μm2 areas on small pieces of IAEA Urban Dust reference materials. The experimental methods are described in detail. The results show that IAEA-396A/M Vienna Urban Dust is homogeneous enough for an SRM (≤ 10% for Si, S, K, Ca, Fe, Cu, Zn) for small sample analysis.
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