Quantification of soil pollution with methods based on X-ray detection like X-Ray Fluorescence (XRF) suffers of multiple bias (moisture, surface state) especially when it's used for in-situ analysis using portable-XRF. In order to study the effect of moisture on the results of an analysis performed using X-Ray, we have performed studies using high energy PIXE/PIGE at the ARRONAX. Samples were made of sand of different types. High energy PIXE/PIGE allows us to avoid bias from surface state and to focus on moisture effect. It also allows to assess the chemical composition of the sample. Results show a different behavior for each element present in volcanic sand.
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