酸功能化MIL-53 (((Al) 作为一种有效的吸收剂,用于稀土元素的痕迹预度,储存和通过X射线光光谱仪的确定
Meng Zhang1, Jing Hu1, Qingsong Tang1
1Analytical and Testing Centre, Sichuan University, Chengdu, Sichuan 610064, China.
Analytical chemistry
|September 15, 2023
概括
一种新的方法使用固相提取 (SPE) 和X射线光谱 (XRF) 来检测水中的15种稀土微量元素 (REEs). 这种高效的技术可以在ng mL-1水平上灵敏地检测REEs.
科学领域:
- 分析化学 分析化学
- 环境科学 环境科学
- 材料科学 材料科学 材料科学
背景情况:
- 精确确定水中的稀土微量元素 (REEs) 对环境监测至关重要.
- 现有的REE分析方法往往需要复杂的程序和专门的设备.
- 需要在环境样本中开发敏感和高效的REE分析技术.
研究的目的:
- 开发一种简单而新的方法,用于同时确定水样中的15个微量REEs.
- 使用功能化的金属有机框架 (MOF) 作为可再生能源的高效吸附剂.
- 将固相提取 (SPE) 与X射线光谱学 (XRF) 结合起来,用于敏感的REE量化.
主要方法:
- 通过合成后修改制备功能化酸BPG-MIL-53 ((Al).
- 从水样中吸收到BPG-MIL-53 (((Al) 吸附剂上的REEs的吸附.
- 使用X射线光谱法 (XRF) 在膜上直接分析了REE吸收的MOF薄膜.
主要成果:
- BPG-MIL-53(Al) 证明了REEs的高效和快速吸附 (几乎在5分钟内完成).
- 该方法实现了在ng mL-1水平的REEs的敏感量化,检测极限在0.4-4.7 ng mL-1.1之间.
- 保留的MOF光盘的XRF分析显示,至少六个月的信号稳定.
- 该方法成功应用于现场分析真实水样,准确度很高.
结论:
- 拟议的SPE-XRF方法提供了一种简单,高效和敏感的方法,用于同时确定水中的多个REE.
- 酸功能化MOF (BPG-MIL-53(Al)) 是一种高度有效的吸收剂,可用于微量REEs.
- 这种方法对现场对稀土元素的环境监测具有前景.
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