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首页> 外文期刊>Journal of Hazardous Materials >Preparation and application of poly(2-amino thiophenol)/MWCNTs nanocomposite for adsorption and separation of cadmium and lead ions via solid phase extraction
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Preparation and application of poly(2-amino thiophenol)/MWCNTs nanocomposite for adsorption and separation of cadmium and lead ions via solid phase extraction

机译：固相萃取吸附和分离镉和铅离子的聚（2-氨基苯硫酚）/ MWCNTs纳米复合材料的制备与应用

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摘要

A new method which utilizes a multiwalled carbon nanotubes/poly(2-amino thiophenol) nanocom-posites as an effective sorbents in solid-phase extraction has been developed for separation and preconcentration of Cd(Ⅱ) and Pb(Ⅱ) trace levels in environmental samples. The method is based on the adsorption of heavy metals on macromolecular chains due to sharing an electron pair of =N— and —S— groups of conducting polymer with cadmium and lead ions. The results indicate the novel nanocomposite presents a high affinity for heavy metals due to the presence of several good extractive sites (S and N) which are introduced to the synthesized nanocomposite. Some parameters including sample condition such as: pH, flow rate, sample volume, and eluent condition such as: type, volume, and concentration: moreover adsorption capacity of matrix ions was investigated on the recovery of Cd(Ⅱ) and Pb(Ⅱ). The maximum adsorption capacity of MWCNTs/P2AT nanocomposite as sorbents at optimum conditions for cadmium and lead ions was found to be 178.7 mgg~(-1) and 186.4 mgg~(-1), respectively. The detection limits of this method were 0.3 and 1 ngmL~(-1) for Cd(Ⅱ) and Pb(Ⅱ), respectively. The validation of the presented procedure was checked by reference material analysis. Finally, the presented procedure was applied for determination of Cd(Ⅱ) and Pb(Ⅱ) in some environmental samples.
机译：提出了一种利用多壁碳纳米管/聚（2-氨基苯硫酚）纳米复合物作为固相萃取有效吸附剂的新方法，用于环境中Cd（Ⅱ）和Pb（Ⅱ）中痕量水平的分离与富集。样品。该方法基于重金属在大分子链上的吸附，这是由于导电聚合物与镉和铅离子共享= N-和-S-电子对。结果表明，由于存在引入到合成的纳米复合材料中的几个良好的萃取位点（S和N），该新型纳米复合材料对重金属具有高亲和力。一些参数包括样品条件，例如：pH，流速，样品量和洗脱条件，例如：类型，体积和浓度：此外，还研究了基质离子对Cd（Ⅱ）和Pb（Ⅱ）的吸附能力。在最佳条件下，作为吸附剂的MWCNTs / P2AT纳米复合材料的最大吸附容量分别为178.7 mgg〜（-1）和186.4 mgg〜（-1）。该方法对Cd（Ⅱ）和Pb（Ⅱ）的检出限分别为0.3和1 ngmL〜（-1）。通过参考材料分析检查了所提出程序的有效性。最后，该方法用于某些环境样品中Cd（Ⅱ）和Pb（Ⅱ）的测定。

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  • 来源
    《Journal of Hazardous Materials》 |2012年第2012期|p.93-100|共8页
  • 作者

    Mohammad Reza Nabid; Roya Sedghi; Akbar Bagheri; Mohammad Behbahani; Mohsen Taghizadeh; Hossein Abdi Oskooie; Majid M. Heravi;

  • 作者单位

    Department of Chemistry, Shahid Beheshti University, G.C, 1983963113, Tehran. Iran;

    Department of Chemistry, Shahid Beheshti University, G.C, 1983963113, Tehran. Iran,Department of Chemistry, Faculty of Science, Alzahra University, Vanak, Tehran, Iran;

    Department of Chemistry, Shahid Beheshti University, G.C, 1983963113, Tehran. Iran;

    Department of Chemistry, Shahid Beheshti University, G.C, 1983963113, Tehran. Iran;

    Department of Chemistry, Shahid Beheshti University, G.C, 1983963113, Tehran. Iran;

    Department of Chemistry, Faculty of Science, Alzahra University, Vanak, Tehran, Iran;

    Department of Chemistry, Faculty of Science, Alzahra University, Vanak, Tehran, Iran;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    MWCNTs/P2AT nanocomposite; solid phase extraction; lead and cadmium; environmental samples;

    机译：MWCNTs / P2AT纳米复合材料;固相萃取铅和镉;环境样品;

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