From the image. Cation resin type material with a Functional Group is a negative ion and arsenic (arsenic) There is a negative ion. Therefore, arsenic (arsenic), it is not possible to Exchange material within a positive ion (Cation Exchanger resin), but to get rid of 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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