开发基于点的凝电解质,用于使用智能手机无线电化学测定和
Nantanat Lersanansit1, Kingkan Pungjunun1, Orawon Chailapakul2
1Electrochemistry and Optical Spectroscopy Center of Excellence (EOSCE), Department of Chemistry, Faculty of Science, Chulalongkorn University, 254 Phayathai Road, Pathumwan, Bangkok, 10330, Thailand.
Talanta
|May 7, 2024
概括
使用基于点的凝电解质的便携式,低成本设备可以同时在现场检测水中的重金属 (Cd) 和 (Pb). 这种环保传感器提供实时环境监测,具有高灵敏度和可重复性.
科学领域:
- 环境科学 环境科学
- 分析化学 分析化学
- 材料科学 材料科学 材料科学
背景情况:
- 对于环境可持续性的便携式,负担得起,实时重金属监测的需求日益增长.
- 现有方法在现场适用性和成本效益方面的局限性.
- 需要对多种重金属如 (Cd) 和 (Pb) 进行敏感和同时检测.
研究的目的:
- 开发一个便携式的,生物聚合物凝基电解质平台,同时在现场测定Cd (II) 和Pb (II).
- 用pectin作为凝电解质的可生物降解和环保矩阵.
- 为了增强电化学信号,使用修改的丝网打印石墨烯电极进行敏感检测.
主要方法:
- 在纸质基板上制备基于pectin的凝电解质,其中包含KCl和Sb (III) -Bi (III) 双金属合金溶液.
- 在现场制造双金属合金和珠纳米颗粒修改的丝网打印石墨烯电极 (Sb-Bi/BiNP/SPGE).
- 使用微分脉冲阳极剥离电压测量 (DPASV) 与无线近场通信 (NFC) 电位器相结合进行分析.
主要成果:
- 已达到低检测极限:Cd (II) 的 50.98 ng/mL,Pb (II) 的 40.80 ng/mL.
- 证明了高可重现性,相对标准偏差低于10.4% (n=10).
- 在受污染的地下水样本中成功量化Cd和Pb,回收率令人满意.
结论:
- 开发的便携式传感器平台为现场重金属监测提供了有效,低成本和环保的解决方案.
- 基于点的凝电解质和修改过的电极提供了对Cd (II) 和Pb (II) 的敏感且同时检测.
- 该系统的优点包括小样本量,最小的样本准备和易用性,使其非常适合实际的环境应用.
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