PAMAM树形分子—PAA聚电解质复合物对痕量元素的富集分离的性能研究

3.0 generation dentritic polyamidoamine (PAMAM) molecules was firstly used to synthesize a new polyelectrolyte complex (PEC) with polyacrylic acid (PAA), and the adsorption characteristics of the PEC as selective adsorbent were studied in details. The experimental results show that trace Cr(III), Pb(II), Bi(III), In(III), Hg(II), V(V) and Ga(III) ions can be enriched quantitatively by 0.1 g of the PEC adsorbent at pH 5, with recoveries >95%.The enrichment acidity, elution conditions, interference ions, saturated adsorption capacity, and analytical precision on the PEC adsorbent were investigated by determination means of inductively coupled plasma atomic emission spectrometry (ICP-AES). The established procedure was applied to a real mixed waste water sample with satisfactory results. In addition, the synthesis conditions and adsorption mechanism of the PAMAM-PAA polyelectrolyte complex were primarily discussed.