使用氧化 (ZrO2) @MWCNTs修改的丝网打印电极在水和食品样本中选择性确定亚酸盐
Nadeen Rajab1, Hosny Ibrahim2, Rabeay Y A Hassan1
1University of Science and Technology (UST), Zewail City of Science and Technology Giza 12578 Egypt ahyoussef@zewailcity.edu.eg ryounes@zewailcity.edu.eg.
RSC advances
|July 19, 2023
概括
这项研究开发了一种新的纳米传感器,用于检测食物和水中的酸盐. 该传感器提供了一种快速,有选择性和敏感的方法来监测这种潜在有害的食品添加剂.
科学领域:
- 电化学 电化学 电化学
- 纳米材料科学 科学 纳米材料科学
- 食品安全分析 食品安全分析
背景情况:
- 酸盐离子被广泛用作食品防腐剂,但由于潜在的致癌性和致癌性影响,它们对健康构成风险.
- 精确和敏感的酸盐检测对于确保食品和水安全至关重要.
- 现有的检测方法可能缺乏常规分析所需的速度,选择性或灵敏度.
研究的目的:
- 构建一种快速,选择性和敏感的电化学试验,用于酸盐的确定.
- 使用基于ZrO2@MWCNTs屏幕打印电极 (SPE) 的一次性纳米传感器芯片.
- 为了验证传感器在真实食物和水样中的性能.
主要方法:
- 使用ZrO2@MWCNTs SPE.制造一次性纳米传感器芯片.
- 使用电子显微镜 (SEM,TEM),FTIR和电化学技术 (EIS,CV,CA) 的表征.
- 优化和验证用于检测亚酸盐的电化学试验.
主要成果:
- ZrO2@MWCNTs SPE表现出优越的电催化活性和导电性.
- 通过使用时频计,获得了广泛的线性动态范围 (5.0μM至100μM) 和低检测极限 (0.94μM).
- 传感器在真实样本中显示出对干扰物种的高选择性和高恢复率.
结论:
- 开发的电化学纳米传感器为快速,选择性和敏感的酸盐测定提供了一个有前途的工具.
- 这种传感器技术可以为加强食品和水安全监测做出重大贡献.
- 像ZrO2@MWCNTs这样的纳米材料的使用对于开发高性能电化学传感器是有效的.
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