Selective Separation and Analysis of Pb(II) Using a New Surface Imprinted Multi-Walled Carbon Nanotubes Combined with AAS

• 作者: Fangfang He Haisheng Zhang Honglin Li Hongqing Wang Jinhui Tang Weiping Zhou Yuyuan Wang Zhiqiang Cheng
• 来源期刊: 分析科学方法和仪器期刊(英文)
• 学科: 化学
• 关键词: Lead Determination Ion Imprinted PARTICLES Carbon NANOTUBE SELECTIVE Recognition
• 年，卷（期）: 2012,（2）
• 页码范围: 60-67
• 页数: 8页
• 分类号: O6

摘要

A new surface ion-imprinted Multi-walled carbon nanotubes (MCNTs), which was 6,6'-((1E,1'E)-(pyridine-2,6-diyl- bis(azanylyl))bis(methanylylidene))bis(2-allyl-phenol) and Pb(II) complex as functional monomer and template ion was presented for extracting and enrichment traces of Pb(II) ion. Parameters affecting the recovery of Pb(II) have been investigated in detail. The novel IMCNTs display high affinity, specificity, and selectivity for Pb(II) with a maximum uptake capacity of 115.5 mg·g–1 at pH 4.0. Meanwhile, only 11 mins was enough for extracting 98.5% Pb(II) for the IMCNTs. No significant loss in adsorption capacity is observed when the IMCNTs are reused for eleven times. Separation and preconcentration with IMCNTs particles results in a limit of detection of 0.47 μg·L–1 (3σ) and RSD (n = 8) of 1.16% by using atomic absorption spectrophotometer (AAS)