By comparing the SEM morphologies of the coating

3.2.2. The arsenic fixation mechanism of the iron coating
Fig. 3. Scanning DHEA microscopy (SEM) image and energy dispersive X-ray spectrum (EDS) of Fe-coating quartz sand before and after As loading. (a) — SEM image before As loading; (b) — EDS energy spectrum before As loading; (c) — SEM image after As loading; (d) — EDS spectrum after As loading.Figure optionsDownload full-size imageDownload as PowerPoint slide