基于组织纸的化学传感器的开发和对Cu2+和Hg2+离子的选择性检测的演示
Bharathkumar Thangaraj1, Marimuthu Ponram1, Suresh Ranganathan2,3
1Department of Chemistry, Easwari Engineering College Chennai 600 089 India karthikeyan.ns12@gmail.com.
RSC advances
|September 4, 2023
概括
一个新的基于伊米达的传感器,DPICDT,检测有毒 (Hg2+) 和铜 (Cu2+) 离子. 该传感器为环境和生物监测应用提供快速,选择性和灵敏的检测.
科学领域:
- 分析化学 分析化学
- 材料科学 材料科学 材料科学
- 环境科学 环境科学
背景情况:
- 工业和农业来源的重金属污染对环境和健康构成重大风险.
- 准确检测和监测有毒金属离子,如 (Hg2+) 和铜 (Cu2+),仍然是各种科学领域的关键挑战.
- 开发敏感和选择性化学传感器对于有效的重金属分析至关重要.
研究的目的:
- 设计和合成一种基于伊米达的新型化学传感器,DPICDT.
- 为了实现Hg2+和Cu2+离子在水中的高度选择性和灵敏的检测.
- 开发现场重金属检测的实际应用.
主要方法:
- 通过合基和替代的化物合成DPICDT化学传感器.
- 使用IR,NMR和HR-MS光谱学进行结构性表征.
- 用于金属离子探测的光谱光度和度分析,以Job图,ESI HR-MS,H NMR定位和DFT计算为支持.
主要成果:
- 对于Cu2+的DPICDT显示出明显的色度变化 (无色到红紫),对于Hg2+的光火.
- 传感器对Cu2+和Hg2+比其他测试的金属离子具有高选择性.
- 达到了低检测极限:Cu2+为15.1nM,Hg2+为1.17μM,明显低于世卫组织指导方针.
- 在组织纸和基基上开发了基于DPICDT的实用DPICDT测试条,用于现场分析.
结论:
- 合成的DPICDT化学传感器是有效的选择性和敏感的检测Hg2+和Cu2+.
- 传感器的视觉和光响应,加上低检测极限,使其适合环境监测.
- 便携式试验条的发展使得在没有专门设备的情况下,能够快速地在现场检测重金属.
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