FT-IR spectra of N6HCl (solid black line) and this resin after ion-exchange with: HAsO₄^2- (dashed black line), SeO₄^2- (solid blue line) and SO₄^2- (dashed blue line).

<p>FT-IR spectra of N6HCl (solid black line) and this resin after ion-exchange with: HAsO₄^2- (dashed black line), SeO₄^2- (solid blue line) and SO₄^2- (dashed blue line).