共聚物吸附剂富集用ICP-AES法测定痕量铅  

Determination of trace lead by ICP-AES after enrichment with copolymer adsorbent

作　　者：谢志海[1] 蔡清[1] 刘宇[1] 王玲燕[1] 王海力[1] 

机构地区：[1]西北大学,合成与天然功能分子化学教育部重点实验室,化学与材料科学学院,西安710069

出　　处：《分析试验室》2013年第2期122-124,共3页Chinese Journal of Analysis Laboratory

摘　　要：建立了马丙共聚物吸附剂富集用ICP-AES法测定痕量Pb2+新方法。马丙共聚物吸附剂对Pb2+具有很高的选择吸附特性,在pH 4.7的HAc-NaAc缓冲溶液中,40 min可达吸附平衡,用0.3 mol/L的HNO3可定量洗脱,富集倍数可达20倍。方法的线性范围为0.002～0.2 mg/L,检出限为0.70μg/L,相对标准偏差为3.1%,加标回收率在92.0%～104.0%之间。A new method for the determination of trace lead by ICP-AES after preeoncentration using the anhydride-acrylamide copolymer adsorbent was proposed. The novel copolymer adsorbent exhibited good adsorption properties for Pb^2＋. The adsorption equilibrium was obtained in pH 4.7 HAc-NaAc buffer solution at 40 rain. The 0.3 mo]/L HNO3 was chosen as the e｜uent. The enrichment factor could be up to 20 times. The linear range was from 2.0 to 200 pLg/L for Pb2＋. The detection limit of the method was 0.70 μg/L and the RSI） was 3.1%. The recoveries were 92.0% - 104.0%.

关 键 词：铅 富集 ICP—AES 测定 

分 类 号：O657.3[理学—分析化学]