Fig. 3From: Compositional and structural analysis of engineered stones and inorganic particles in silicotic nodules of exposed workersEDX spectra normalized to the N peak for samples S2, S3 and S4, obtained from regions A (red), B (blue) and D (green) of a nodule for samples S3 (images (a) and (c)), S2 (b) and S4 (d)Back to article page