综合超临界流体提取和在线ICP-MS的的纳米克测定 (IV) 使用calixarene酸
Devarshi Thaker1, Bignesh Thakur2, Nirav Pandya3
1Faculty of Science, Nirma University, Ahmedabad-382481, Gujarat, India.
Analytical methods : advancing methods and applications
|March 2, 2026
概括
一种新的方法有效地提取和检测微量 (IV) 使用超临界流体提取 (SFE) 与ICP-MS相结合. 这种环保技术为复杂的样本分析提供了高灵敏度和精度.
科学领域:
- 分析化学 分析化学
- 环境科学 环境科学
背景情况:
- 精确确定微量对于各种工业和环境应用至关重要.
- 现有的分析方法可能耗时,可能涉及危险化学品.
研究的目的:
- 开发一种选择性,高效和环保的方法来确定微量.
- 为了整合超临界流体提取 (SFE) 与卡利沙林酸 (CC4AHA) 和ICP-MS进行在线分析.
主要方法:
- 系统优化SFE条件:温度,压力,提取时间,酸度和有机修饰剂.
- 在线合SFE与感应合等离子体质谱 (ICP-MS) 进行实时检测.
- 使用二甲修饰的超临界CO2和8.0M HCl用于定量Ti(IV) 恢复.
主要成果:
- 在最佳条件下 (50°C,17MPa,5-6分钟) 实现了Ti(IV的定量回收 (>99.9%).
- 在0.23-2.18 ng mL-1度范围内表现出极好的线性 (R2 > 0.999).
- 报告了低检测极限 (0.78 ng mL-1) 和定量 (2.34 ng mL-1),具有高精度 (<5% RSD) 和准确性 (96-104%的恢复).
结论:
- 开发的SFE-ICP-MS方法对于超微量的确定是快速,灵敏和准确的.
- 在认证的参考材料和复杂的现实世界样本中成功应用了分析的方法.
- 呈现了一种更绿色的分析替代方案,用于不同矩阵中的分析.
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