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Table 2 Elemental ratios determined by EDX. Values are averages calculated from measurements of all selected areas

From: Effects of metal cation substitution on hexavalent chromium reduction by green rust

Sample[Cr]/([Cr+Fe])a[Fe]/[S]
oxGR0.19 (0.02) (n = 2)4.21 (1.68) (n = 2)
oxAl-GR0.142 (0.012) (n = 2)13.90 (2.20) (n = 2)
oxMg-GR0.158 (0.052) (n = 7)31.19 (14.45) (n = 7)
oxZn-GR0.179 (0.074) (n = 8)13.72 (6.94) (n = 8)
  1. Elemental ratios and uncertainties calculated from all EDX measurements taken from hexagonal particles
  2. aExpected ratio (reaction stoichiometry) is ca. 0.18