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首页> 外文期刊>Environmental Science & Technology >Ratiometric Monitoring of Thorium Contamination in Natural Water Using a Dual-Emission Luminescent Europium Organic Framework
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Ratiometric Monitoring of Thorium Contamination in Natural Water Using a Dual-Emission Luminescent Europium Organic Framework

机译：使用双发射Lu有机框架对天然水中的ium污染进行比例监测

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摘要

Traditional analytical methods of thorium contamination suffer from several disadvantages such as time-consuming procedures and an equipment-intensive nature, leading to substantial challenges in rapid and on-site monitoring of thorium concentrations in complex natural water systems. We report here the first case of a luminescent metal organic framework based probe (ThP-1) for highly sensitive and selective self-calibrated sensing of Th4+ contamination in natural fresh water media with a notably facilitated detection procedure. The detection limit of ThP-1 was determined to be 24.2 mu g/L, much lower than the thorium contamination standard of 246 mu g/L in drinking water defined by the World Health Organization. Importantly, the detection procedure based on the rarely reported self-calibration manner is greatly beneficial in improving the detection accuracy. The self calibrated luminescence evolution process shows a great anti-interference ability capable of detecting thorium contamination in a wide concentration range from 24.2 mu g/L to 300 mg/L, which can not be achieved directly by the traditional methods. The Th4+-selective luminescence response originates from the selective uptake and efficient enrichment of Th4+ by the host framework of ThP-1 through inner-sphere coordination, which is further confirmed by batch experiments, X-ray absorption spectroscopic study, and DFT calculations.
机译：传统的analytical污染分析方法具有多个缺点，例如耗时的过程和设备密集的特性，导致在复杂的天然水系统中快速，现场监测or浓度时面临着严峻的挑战。我们在此报告了基于发光金属有机骨架的探针（ThP-1）的第一种情况，该探针可对天然淡水介质中的Th4 +污染进行高度灵敏和选择性的自校准感测，并且检测程序特别方便。确定ThP-1的检出限为24.2μg / L，远低于世界卫生组织确定的饮用水中or污染标准246μg / L。重要的是，基于很少报导的自校准方式的检测程序对于提高检测精度非常有利。自校准发光演化过程显示出强大的抗干扰能力，能够在24.2μg/ L至300 mg / L的宽浓度范围内检测th污染，这是传统方法无法直接实现的。 Th4 +选择性发光响应源自ThP-1宿主框架通过内球配位对Th4 +的选择性摄取和有效富集，批处理实验，X射线吸收光谱研究和DFT计算进一步证实了这一点。

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  • 来源
    《Environmental Science & Technology》 |2019年第1期|332-341|共10页
  • 作者

    Liu Wei; Dai Xing; Wang Yanlong; Song Liping; Zhang Linjuan; Zhang Duo; Xie Jian; Chen Long; Juan Diwu; Wang Jianqiang; Chai Zhifang; Wang Shuao;

  • 作者单位

    Soochow Univ, State Key Lab Radiat Med & Protect, Sch Radiol & Interdisciplinary Sci RAD X, 199 Renai Rd, Suzhou 215123, Peoples R China|Soochow Univ, Collaborat Innovat Ctr Radiat Med, Jiangsu Higher Educ Inst, 199 Renai Rd, Suzhou 215123, Peoples R China;

    Soochow Univ, State Key Lab Radiat Med & Protect, Sch Radiol & Interdisciplinary Sci RAD X, 199 Renai Rd, Suzhou 215123, Peoples R China|Soochow Univ, Collaborat Innovat Ctr Radiat Med, Jiangsu Higher Educ Inst, 199 Renai Rd, Suzhou 215123, Peoples R China;

    Soochow Univ, State Key Lab Radiat Med & Protect, Sch Radiol & Interdisciplinary Sci RAD X, 199 Renai Rd, Suzhou 215123, Peoples R China|Soochow Univ, Collaborat Innovat Ctr Radiat Med, Jiangsu Higher Educ Inst, 199 Renai Rd, Suzhou 215123, Peoples R China;

    Soochow Univ, State Key Lab Radiat Med & Protect, Sch Radiol & Interdisciplinary Sci RAD X, 199 Renai Rd, Suzhou 215123, Peoples R China|Soochow Univ, Collaborat Innovat Ctr Radiat Med, Jiangsu Higher Educ Inst, 199 Renai Rd, Suzhou 215123, Peoples R China;

    Univ Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China|Univ Chinese Acad Sci, Key Lab Nucl Radiat & Nucl Energy Technol, Shanghai 201800, Peoples R China;

    Soochow Univ, State Key Lab Radiat Med & Protect, Sch Radiol & Interdisciplinary Sci RAD X, 199 Renai Rd, Suzhou 215123, Peoples R China|Soochow Univ, Collaborat Innovat Ctr Radiat Med, Jiangsu Higher Educ Inst, 199 Renai Rd, Suzhou 215123, Peoples R China;

    Soochow Univ, State Key Lab Radiat Med & Protect, Sch Radiol & Interdisciplinary Sci RAD X, 199 Renai Rd, Suzhou 215123, Peoples R China|Soochow Univ, Collaborat Innovat Ctr Radiat Med, Jiangsu Higher Educ Inst, 199 Renai Rd, Suzhou 215123, Peoples R China;

    Soochow Univ, State Key Lab Radiat Med & Protect, Sch Radiol & Interdisciplinary Sci RAD X, 199 Renai Rd, Suzhou 215123, Peoples R China|Soochow Univ, Collaborat Innovat Ctr Radiat Med, Jiangsu Higher Educ Inst, 199 Renai Rd, Suzhou 215123, Peoples R China;

    Soochow Univ, State Key Lab Radiat Med & Protect, Sch Radiol & Interdisciplinary Sci RAD X, 199 Renai Rd, Suzhou 215123, Peoples R China|Soochow Univ, Collaborat Innovat Ctr Radiat Med, Jiangsu Higher Educ Inst, 199 Renai Rd, Suzhou 215123, Peoples R China;

    Univ Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China|Univ Chinese Acad Sci, Key Lab Nucl Radiat & Nucl Energy Technol, Shanghai 201800, Peoples R China;

    Soochow Univ, State Key Lab Radiat Med & Protect, Sch Radiol & Interdisciplinary Sci RAD X, 199 Renai Rd, Suzhou 215123, Peoples R China|Soochow Univ, Collaborat Innovat Ctr Radiat Med, Jiangsu Higher Educ Inst, 199 Renai Rd, Suzhou 215123, Peoples R China;

    Soochow Univ, State Key Lab Radiat Med & Protect, Sch Radiol & Interdisciplinary Sci RAD X, 199 Renai Rd, Suzhou 215123, Peoples R China|Soochow Univ, Collaborat Innovat Ctr Radiat Med, Jiangsu Higher Educ Inst, 199 Renai Rd, Suzhou 215123, Peoples R China;

  • 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);
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