Measurement of Total Free Iron in Soils by H<sub>2</sub>S Chemisorption and Comparison with the Citrate Bicarbonate Dithionite Method

<table class="figure-group"><tr class="fig-image" id="a"><td><object data="https://static.hindawi.com/articles/jamc/volume-2016/7213542/figures/7213542.fig.004a.svgz" name="7213542.fig.004a" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(a) </b>CO existence</td></tr><tr class="fig-image" id="b"><td><object data="https://static.hindawi.com/articles/jamc/volume-2016/7213542/figures/7213542.fig.004b.svgz" name="7213542.fig.004b" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(b) </b>H<sub>2</sub> existence</td></tr></table>

<div>The regression relationship between CBD-Fe content and the estimated total free iron under the experimental condition of CO and H<sub>2</sub>, respectively.</div>

Journal of Analytical Methods in Chemistry

fig4

Figure 4

Figure 4: Measurement of Total Free Iron in Soils by H<sub>2</sub>S Chemisorption and Comparison with the Citrate Bicarbonate Dithionite Method 

Journal of Analytical Methods in Chemistry

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

Figure 4

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