使用聚多巴胺/AuNPs 修改的印碳电极的基于电容的高度敏感的化物检测
Faisal K Algethami1, Amal Rabti2,3, Mohamed Mastouri2
1Department of Chemistry, College of Science, Imam Mohammad Ibn Saud Islamic University (IMSIU) P.O. Box 90950 Riyadh 11623 Saudi Arabia noureddine.raouafi@fst.utm.tnfalgethami@imamu.edu.sa.
RSC advances
|July 19, 2023
概括
这项研究介绍了一种用于检测加工食品中酸盐的新传感器. 基于金纳米粒子和聚多巴胺的传感器提供了灵敏而可靠的化物检测,这对食品安全至关重要.
科学领域:
- 电化学 电化学 电化学
- 材料科学 材料科学 材料科学
- 食品科学 食品科学 食品科学
背景情况:
- 监管机构为食品添加剂 (如酸盐) 设定了限制值,以确保消费者安全.
- 酸盐在加工肉类中用于抑制细菌生长和降解.
- 开发敏感的化物检测方法对于食品质量控制至关重要.
研究的目的:
- 开发一种使用电化学技术检测亚酸盐的灵敏和多功能方法.
- 为了利用聚多巴胺和金纳米颗粒的氧化还原特性来增强传感.
- 为了验证传感器在现实世界食品样本中的性能.
主要方法:
- 使用电化学沉积聚多巴胺 (pDA) 在金纳米粒子 (AuNP) 修饰的丝网打印电极 (SPCE) 上制造的传感器.
- 利用氧化还原电容谱法,根据氧化还原分布的变化检测酸盐离子.
- 测试传感器的线性响应范围和酸盐检测极限.
主要成果:
- 开发的传感器显示了从10到500微米的酸盐检测线性响应.
- 达到了1.98μM的低检测极限 (S/N = 3).
- 在加工肉样本中成功分析了酸盐含量,回收率很好.
结论:
- 经过AuNPs/pDA修改的SPCE传感器是敏感和常规酸盐检测的有希望的工具.
- 氧化还原电容光谱方法为离子传感提供了一种多功能方法.
- 这项技术可以有助于加强食品安全监测和质量保证.
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