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Table 7 Results of an 'accuracy check' of the proposed method with standard reference material: NIST SRM 81a Glass Sand

From: Stepwise complexometric determination of aluminium, titanium and iron concentrations in silica sand and allied materials

Constituents

Certified Reference Results as per certificate

Set-I, % w/w, Results obtained using the proposed method

Set-II, % w/w Results obtained by complexometry5 for Al, and colorimetry6 for Fe and Ti

Al2O3

0.66

0.67 ± 0.09

0.66 ± 0.10

Fe2O3

0.082

0.07 ± 0.02

0.08 ± 0.02

TiO2

0.12

0.15 ± 0.04

0.11 ± 0.04

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BMC Chemistry

ISSN: 2661-801X

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