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Table 1 Chemical compositions of the RHA analyzed by AAS

From: Synthesis of silica nanoparticles from Vietnamese rice husk by sol–gel method

Component (wt.%)

K2O

Al2O3

Fe2O3

CaO

MgO

Na2O

SiO2

Before treatment

0.39

0.48

0.15

0.73

0.55

0.12

96.15

After treatment

0.01

0.06

0.04

0.04

0.06

0.01

99.08

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