Molecular formula :
nature : means with primaquine (-NH2), secondary amines (-NHR), tertiary amine (-NR< SUB>2) or aromatic amine functional groups such as the ion exchange resins. Such exchange resin with large capacity, the advantages of easily renewable, but the exchange of gene activity in aqueous solution small degree of dissociation, which was weakly alkaline R-NH2 + H2OR- ; NH3 + + OH-, the exchange rate of slightly below-basic resin, the only neutral, especially in acidic medium can show their ion-exchange function. Such resin mainly used for water treatment and wastewater treatment (such as electroplating wastewater), heavy metals, antibiotics or the rare element extraction, separation, purification and so on.
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