From the image. Cation resin type material with a Functional Group is a negative ion is similar to arsenic (arsenic) Therefore, arsenic, thus not being able to go inside the positive ion exchange materials (Cation Exchanger resin). But in anion to eliminate arsenic (arsenic) Rely on a mix of perfect adhesion to furnish services khoklorai (FeCl3) to iron (Fe) as an adhesion with arsenic (arsenic) But the solution cannot be cast into resin product ID. It is used as a solvent to break through thatha reduction of iron.
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