超灵敏的光碳点传感器用于定量颗粒物中的可溶和不可溶Cr (VI) 含量
Enoch Kwasi Adotey1, Mehdi Amouei Torkmahalleh2, Lyazzat Tastanova3
1Department of Chemical and Materials Engineering, Nazarbayev University, Astana 010000, Kazakhstan.
Journal of hazardous materials
|October 12, 2023
概括
和硫合的光碳点 (f-CDs) 是一种灵敏且经济实惠的方法,用于检测空气颗粒中的六价 (Cr(VI)). 这一进步为环境监测提供了一个实用的工具.
科学领域:
- 材料科学 材料科学 材料科学
- 环境科学 环境科学
- 分析化学 分析化学
背景情况:
- 六价 (Cr(VI)) 对环境和健康构成重大风险.
- 在颗粒物中监测空气中的Cr(VI) 需要实用且负担得起的分析技术.
- 现有的Cr (VI) 检测方法可能是复杂和昂贵的.
研究的目的:
- 开发用于检测不溶性Cr6的先进功能材料.
- 探索N,S-合的光碳点 (f-CDs) 作为环境颗粒物 (PM) 中Cr (VI) 的传感器.
- 建立一种灵敏且具有成本效益的方法,用于在空气中量化Cr (VI).
主要方法:
- 通过微波合成 (平均直径10 nm) 制造N,S合的光碳点 (f-CDs).
- 利用f-CDs的光灭特性来检测Cr.
- 光方法应用于现场PM样本的Cr (VI) 量化.
主要成果:
- 对各种Cr(VI) 化合物实现了高平均回收率 (例如,PbCrO4的106.0%).
- 在现场 PM 样本中确定了 0.32 ng/m3 的方法检测极限 (MDL) 总 Cr (VI).
- 证明了Cr(VI) 火通过静态火机制 (内部波器效应) 发生.
结论:
- N,S-doped f-CD是环境空气颗粒中的Cr (VI) 的有效,负担得起和敏感传感器.
- 开发的光方法为环境Cr (VI) 监测提供了一个有希望的替代方案.
- 这项研究促进了碳基材料的开发,用于检测金属空气污染物.
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