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. 2021 Feb;22(2):325–332. doi: 10.31557/APJCP.2021.22.2.325

Table 1.

Purification Efficiency of A-SiO2 in Micron Sizes by ICP-OES

Metal impurity as (ppm) Ag Al Be Cd Cr Cu Fe Li Mn Ni Pb
Before extraction 0.5> 1148.1 1.46 0.11 38.37 15.51 8077.24 20.78 43.31 14.26 11.16
After extraction 0.5> 451.15 0.39 0.1> 31.12 3.76 2055.41 20.45 5.9 4.08 4.34