JEQ -- Hettiarachchi et al. 35 (1): 342 Figure IG4

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Fig. 4. (a) Optical image of 220 by 120 µm area for the intact Nu-Earth biosolids sample, (b) X-ray fluorescence map of Fe, (c) X-ray fluorescence map of Cd, and (d) correlation between Fe and Cd fluorescence signals.