Separation and Determination of Fe(III) and Fe(II) in Natural and Waste Waters Using Silica Gel Sequentially Modified with Polyhexamethylene Guanidine and Tiron

<div>Scheme of the sorption separation of Fe(III) and Fe(II) in flow analysis using SiO<sub>2</sub>-PHMG-Tiron (minicolumn (1, 2), tee-joint (3), and peristaltic pump (4)).</div>

Journal of Analytical Methods in Chemistry

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Figure 1

Figure 1: Separation and Determination of Fe(III) and Fe(II) in Natural and Waste Waters Using Silica Gel Sequentially Modified with Polyhexamethylene Guanidine and Tiron 

Figure 1 | Separation and Determination of Fe(III) and Fe(II) in Natural and Waste Waters Using Silica Gel Sequentially Modified with Polyhexamethylene Guanidine and Tiron 