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A novel photoluminescence sensing system sensitive for and selective to bromate anions based on carbon dots

机译：一种新型光致发光传感系统，对基于碳点的溴酸盐阴离子敏感

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摘要

A sensitive and selective chemosensing system for bromate anions (BrO3- anions) is highly demand due to the serious toxicity of BrO3- anions. In this report, polymeric ethylene imine (PEI) functionalized photoluminescent carbon dots (CDs@PEI) were prepared by the thermal pyrolysis of citric acid and PEI. The as-prepared CDs@PEI were successfully employed to establish a photoluminescence (PL)-based sensing system for BrO3- anions with high sensitivity and selectivity. The experimental conditions were systemically optimized, and a linear relationship between the PL quenching rate of the CDs@PEI and BrO3- anion concentration in the range from 0.04 to 0.35 mu M could be obtained, with a very low limit of detection of ca. 0.17 nM. The proposed method was further employed to determine BrO3- anions in drinking water, bottled water and lake water samples with good recoveries. This established method was also successfully employed to detect BrO3- anion content in practical pastry samples.
机译：由于Bro3 - 阴离子的严重毒性，对溴酸盐阴离子（Bro3-阴离子）的敏感和选择性化学溶解系统是高度需求。 在本报告中，通过柠檬酸和PEI的热热解制备聚合物乙烯亚胺（PEI）官能化光致发光碳点（CDS @ PEI）。 成功使用AS制备的CDS / PEI，以建立具有高灵敏度和选择性的BRO3的基于光致发光（PL）的传感系统。 实验条件得到全系统优化，Cds @ Pei和Bro3-阴离子浓度的PL猝灭速率之间的线性关系可以获得在0.04至0.35μm的范围内，具有非常低的Ca检测限。 0.17 nm。 该提出的方法进一步用于测定饮用水，瓶装水和湖水样品中的Bro3 - 阴离子，具有良好的回收率。 该建立的方法也成功地用于检测实际糕点样本中的Bro3 - 阴离子含量。

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  • 来源
    《RSC Advances》 |2016年第66期|共6页
  • 作者

    Li Ping; Sun Xiang-Ying; Shen Jiang-Shan; Liu Bin;

  • 作者单位

    Huaqiao Univ Coll Chem Engn Xiamen 361021 Peoples R China;

    Huaqiao Univ Coll Mat Sci &

    Engn Xiamen 361021 Peoples R China;

    Huaqiao Univ Coll Mat Sci &

    Engn Xiamen 361021 Peoples R China;

    Huaqiao Univ Coll Mat Sci &

    Engn Xiamen 361021 Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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