在食品样本中确定 (II) 使用功能化纸质光传感器,通过碳点进行修改
Elias Aboobakri1, Tahereh Heidari1, Moslem Jahani2
1Department of Chemistry, Faculty of Sciences, Ferdowsi University of Mashhad, Mashhad, Iran.
Luminescence : the journal of biological and chemical luminescence
|February 19, 2024
概括
研究人员开发了一种新型传感器,使用改性纤维素纸和和硫共碳点 (NSCD) 进行敏感的离子检测. 这种低成本的现场方法为环境监测提供了一个快速的方法.
科学领域:
- 材料科学 材料科学 材料科学
- 分析化学 分析化学
- 环境科学 环境科学
背景情况:
- 纤维素纸是一种可持续的材料,但其在传感应用中的直接使用受到传感元件的不良兼容性和重新分配的限制.
- 由于其独特的光学特性,和硫共碳点 (NSCD) 对金属离子传感具有前景.
研究的目的:
- 开发一种基于纤维素纸的传感器,用于使用NSCD检测离子.
- 研究表面修改策略,以提高纤维素纸上NSCD的兼容性和固定性.
- 优化传感器参数并评估其用于离子传感的性能.
主要方法:
- 使用西兰或奇托,对纤维素纸的表面进行修改.
- 在修改的纤维素纸上固定NSCD.
- 优化纸张类型,酸盐度,pH值和NSCD度.
- 使用光成像和分析光强度变化的离子传感.
主要成果:
- 素修饰有效地防止了干燥过程中的NSCD再分配,并使NSCD成功固定.
- 优化传感器条件:什么人没有. 42纸,1%奇托,pH值8.0,2.5g/L.NSCDs. 这是一个非常好的方法.
- 该NSCDs-纸张传感器显示了高选择性(II) 离子.
- 对的线性响应 (II) 检测在5.001.25 × 102 μmol/L (R2 = 0.9988) 的范围内,检测极限为4.50 μmol/L.
结论:
- 基托桑改性纤维素纸是开发基于NSCD的传感器的合适平台.
- 开发的传感器提供了一种快速,低成本和有效的方法,用于在现场确定各种样品中的离子.
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