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. 2021 Sep 1;18(17):9234. doi: 10.3390/ijerph18179234

Figure 4.

Figure 4

Morphology and chemical composition of Fe, As, Zn, Pb, and S dust particles represented by: (A) arsenopyrite (washout sample No. 3); (B) marcasite (sample No. 2); (C) sphalerite (sample No. 3); and (D) galena (sample No. 1).