绿色液体超分子溶剂 (SUPRA) 阶段,用于从水样中快速选择性地微提取Co2+离子
Tara Darabi1, Foujan Falaki1, Fereshteh Naderi1
1Department of Chemistry, Shahr-e-Qods Branch, Islamic Azad University, Kalhor Blvd, Shahr e Qods, Tehran, 13115-37541, Iran.
Talanta
|November 9, 2024
概括
一种基于SUPRA的新型液体-液体微提取 (LLME) 方法有效地利用环保的超分子溶剂 (SUPRA) 提取(II) 离子. 这种技术消除了对分散溶剂的需求,在10分钟内达到99%的提取效率.
科学领域:
- 分析化学 分析化学
- 环境化学环境化学
- 材料科学 材料科学 材料科学
背景情况:
- 传统的液体-液体微提取 (LLME) 通常需要分散溶剂,限制其环保性和效率.
- 开发对等金属离子的选择性和高效的提取方法对于环境监测和工业过程至关重要.
研究的目的:
- 引入新的基于SUPRA的LLME方法,用于定量和选择性地提取 (II) 离子.
- 开发一种环保的提取技术,消除对分散溶剂的需求.
- 为了合成和描述一种用于增强金属离子提取的新型液体吸附剂.
主要方法:
- 合成一种水性不混合的超分子溶剂 (SUPRA) 阶段,该阶段由酸囊泡组成.
- 将N,N'-disalicylidene-3,4-diaminotoluene (H2dst) 纳入SUPRA阶段,以增加对 (II) 离子的选择性.
- 在液-液微提取过程中应用已制备的SUPRA阶段,从水溶液中去除 (II) 离子.
主要成果:
- 基于SUPRA的LLME方法在很短的提取时间 (10分钟) 内实现了高提取效率 (99%±2.7%) 的 (II) 离子.
- 观察到具有高相关系数 (0.999) 的宽线性范围 (5002500 μg L-1),低检测极限 (150 μg L-1),预度因子为35.2.2.
- 该方法证明了对CO2+和Ni2+离子的选择性,并在工厂废水和海水等真实样本中显示了最小的矩阵效应.
结论:
- 基于SUPRA的LLME为金属离子的选择性提取提供了一个有希望的,无溶剂的,高效的替代方案.
- 开发的方法适用于环境样本中的预度和分析.
- 超分子溶剂的使用代表了分析提取技术中的绿色化学方法.
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