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. 2019 Dec 9;5(12):e02926. doi: 10.1016/j.heliyon.2019.e02926

Table 2.

Chemical composition (%) of Vg, expressed in terms of oxides.

Oxide
SiO2 Al2O3 TiO2 Fe2O3 K2O Na2O MgO CaO MnO P2O5 L.I.
Raw sample
Vg 53,46 18,88 1,02 6,78 1,85 0,85 1,06 1,16 0,08 0,09 14,64

L. I.. = loss on ignition.