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  

PAMAM Dentrimers——Study on the Property of Selective Sorption of Trace Metal Ions Using Polyelectrolyte Complexes of PAA

作　　者：李建设 王邃[2] 

机构地区：[1]济源市质量技术监督检验测试中心,河南济源454650 [2]宁波大学材料科学与化学工程学院,浙江宁波315211

出　　处：《济源职业技术学院学报》2009年第2期57-61,共5页Journal of Jiyuan Vocational and Technical College

摘　　要：首次用3.0代聚酰胺-胺型(PAMAM)树形分子与聚丙烯酸(PAA)合成了聚电解质复合物(PEC),并用于痕量元素的富集分离。实验表明,在pH=5时,痕量的Cr(Ⅲ),Pb(Ⅱ),Bi(Ⅲ),In(Ⅲ),Hg(Ⅱ),V(V)和Ga(Ⅲ)离子能被0.1g吸附剂定量富集,回收率超过95%。利用电感耦合等离子体原子发射光谱(ICP-AES)详细研究了富集酸度、洗脱条件、共存离子干扰、饱和吸附量、分析精密度,并用于实际废水样品的分析。3.0 generation dentritic polyamidoamine （PAMAM） molecules is 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 pHS, with recoveries more than 95%. The enrichment acidity, elution conditions, interference ions, saturated adsorption capacity, and analytical precision on the PEC adsorbent are investigated by determination means of inductively coupled plasma atomic emission spectrometry （ ICP - AES）. The established procedure is also applied to a real mixed waste water sample.

关 键 词：PAMAM树形分子 聚电解质复合物 痕量元素 富集分离 ICP—AES 

分 类 号：O656.31[理学—分析化学]