Journal of Analytical Methods in Chemistry / 2016 / Article / Tab 4

Research Article

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

Table 4

The sulfur capacities and estimated total free iron of six representative soil samples at 773 K under the experimental condition of 50% H2.

Soil seriesBreakthrough time (min)Sulfur capacity (%)Sulfur content by EA (%)Sulfur balance
(%)
Estimated total free iron
(Fe2O3 %)
CBD-Fe
(Fe2O3 %)

Taikon20.10.880.8998.882.192.54
Kuiren10.50.460.5092.01.141.42
Wukuiliao19.80.860.84102.382.162.45
Sofong3.80.160.1888.880.410.45
Jensui6.90.300.3196.770.750.92
Houli30.71.341.3797.813.343.72

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