Journal of Analytical Methods in Chemistry / 2016 / Article / Tab 3

Research Article

Measurement of Total Free Iron in Soils by H2S Chemisorption and Comparison with the Citrate Bicarbonate Dithionite Method

Table 3

The sulfur capacities of the Loupi soil at various temperatures under the experimental condition of 50% CO and 1% H2S with balanced N2.

TemperatureBreakthrough time (min)Sulfur capacity (%)Sulfur capacity by EA (%)Sulfur balance
Estimated total free iron

673 K301.311.3299.243.07
723 K411.781.77100.564.19
773 K421.831.81101.104.30
823 K401.741.72101.164.09
873 K351.521.50101.333.58
923 K331.441.44100.03.38

CBD-Fe: 4.28 (Fe2O3%).

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