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. 2019 Jan 25;12(3):381. doi: 10.3390/ma12030381

Table 2.

XRF characterization of raw precursors and CaO, Ca(OH)2 powders.

Chemical Element (wt. %) Ca O Mg C
Marble Raw precursor 33.30 42.86 0.83 22.71
CaO 77.59 21.43 0.58 –
Ca(OH)2 50.72 48.76 0.22 –
Seashell Raw precursor 39.03 41.03 – 19.64
CaO 75.06 24.54 – –
Ca(OH)2 51.21 48.39 – –