直接光谱法用于确定 (II) 离子使用Bis-Thiosemicarbazone
Sulafa Nassar1, Gharam I Mohammed1, Thoraya A Farghaly2
1Chemistry Department, Faculty of Science, Umm Al-Qura University, Makkah, Saudi Arabia.
International journal of analytical chemistry
|May 14, 2025
概括
一种新的光谱光度测量方法使用一种简单,敏感的技术准确地确定了 (II) 离子. 这一进步使金属离子分析在不需要溶剂净化的情况下变得简单,提供了一个具有成本效益的解决方案.
科学领域:
- 分析化学 分析化学
- 环境化学环境化学
背景情况:
- 准确确定 (II) 离子对于环境监测和人类健康至关重要.
- 现有的 (II) 光谱测量方法往往需要复杂的样品制备,这限制了它们的实际应用.
研究的目的:
- 开发一种简单,精确和敏感的光谱光度测量方法,用于确定 (II) 离子.
- 为了分析目的,研究 (II) 与 bis (((英多林-2,3-二离子) 硫化碳 (L) 的复合.
主要方法:
- 在pH12下对 (II) 离子在 bis (((indoline-2,3-dione) thiosemicarbazone (L) 的存在下进行光谱分析.
- 使用布列顿-罗宾逊缓冲器进行pH控制.
- 使用元素分析,UV-Vis,质谱学和热分析对孤立的L-Cd复合体进行表征.
主要成果:
- 该方法根据贝尔定律,准确量化 (II) 离子在 (1.8-17.8) ×10−5 mol L−1 的度范围内.
- 实现了低检测极限 (0.245μg mL-1) 和量化极限 (0.817μg mL-1).
- 在 (L) 和 (II) 离子之间建立了1:2的摩尔比,形成了一个稳定的金属复合体.
结论:
- 开发的光谱光度测量方法简单,快速,具有成本效益,并且对 (II) 确定具有高度灵敏性.
- 该方法消除了对溶剂净化或缩步骤的需求.
- 隔离的L-Cd复合物的表征为分析方法提供了进一步的验证.
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