一个基于双发射碳点的比度光传感器,用于快速检测硫酸盐
Mingyan Jia1, Wenxing Mi1, Xiaowei Guo1
1State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, PR China.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy
|September 20, 2024
概括
一个新的比度传感器使用化碳量子点检测二氧化硫 (SO2) 衍生物. 这种方法可以快速,准确地监测食品和药品中的硫酸盐残留物.
科学领域:
- 分析化学 分析化学
- 材料科学 材料科学 材料科学
- 生物医学工程 生物医学工程
背景情况:
- 二氧化硫 (SO2) 衍生物被广泛用于食品和制药中的抗氧化剂.
- 过度摄入硫酸盐对健康构成重大风险,需要有效的监测系统.
- 目前的SO2监测方法可能缺乏现实应用所需的速度和灵敏度.
研究的目的:
- 开发一种快速有效的比度传感器,用于检测SO2衍生物 (硫酸盐).
- 为了合成用于传感器开发的双发射添加碳量子点 (CECDs).
- 建立一个便携式平台,在现场检测食品和药品中的硫酸盐残留物.
主要方法:
- 使用一阶段的热水方法合成双发射化碳量子点 (CECD).
- 将CECDs与Cr(VI) 结合起来,以创建用于比度传感器的CECDs-Cr(VI) 复合材料.
- 通过监测硫化物添加后的排放强度比率 (I440/I500) 变化来评估传感器的性能.
- 该方法使用硫化药食同质材料 (MFHMs) 进行了验证,并应用于真实样本.
主要成果:
- CECDs-Cr(VI) 复合材料的排放强度比 (I440/I500) 与HSO3-度的比例增加.
- 建立了SO2衍生物的比度传感方法,在广泛的度范围 (0-500μM) 上具有高效率和线性 (R2 = 0.9946).
- 传感器准确地检测到四个MFHM中的硫酸盐残留物,并在现实世界样本分析中证明了有效性.
- 开发了一种便携式试管格式,用于快速,半定量地在现场检测.
结论:
- 基于CECDs-Cr(VI) 复合材料开发的比度传感器为硫酸盐检测提供了一种敏感和选择性的方法.
- 该传感器为快速现场监测食品和药品中的硫酸盐残留物提供了一个有效的平台.
- 该研究强调了双排放碳量子点在开发食品安全和制药质量控制的先进分析工具方面的潜力.
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