Table 1

Screening of iron chelate systems
Iron salt Chelating agent Molar ratio Reaction time (min) Sulfur recovered mg/gm of iron chelate % purity Sulfura
FeCl3 Citric acid 1:2 36 184.20 >99
Malic acid 1:3 15 499 >99
Gluconic acid 1:3 5 27.7 83.71
Fe2(SO4)3 Citric acid 1:2 25 137.8 97.5
Malic acid 1:3 37 235 >99
Gluconic acid 1:3 39 51 88.44
Fe2(NO3)3 Citric acid 1:2 10 116,83 75.96
Malic acid 1:3 5 290.88 94
Gluconic acid 1:3 20 90 99

aThe precipitate besides sulfur also contains C, N, H, and Fe, etc., as shown by elemental analysis

Deshpande et al.

Deshpande et al. Nanoscale Research Letters 2008 3:221-229   doi:10.1007/s11671-008-9140-6

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