基于Curcuma longa的光学传感器用于盐酸和氨气蒸汽检测
A Sánchez Juárez1, Fabián Carrión1, Javier Carrión1
1Departamento de Química, Universidad Técnica Particular de Loja, Loja 1101608, Ecuador.
Sensors (Basel, Switzerland)
|July 8, 2023
概括
这项研究引入了一种使用黄 (Curcuma longa) 颜料的新型光学传感器,用于检测低度的酸 (HCl) 和氨 (NH3) 等危险气体. 自然色素传感器对环境监测和工业安全具有很高的灵敏度.
科学领域:
- 分析化学 分析化学
- 材料科学 材料科学 材料科学
- 环境科学 环境科学
背景情况:
- 对酸 (HCl) 和氨 (NH3) 等危险气体的准确检测对于环境监测和工业安全至关重要.
- 现有的检测方法可能缺乏灵敏度,便携性或依赖复杂的仪器仪表.
- 天然颜料具有作为成本效益和环保感应材料的潜力.
研究的目的:
- 开发和验证一种原型光学系统,用于敏感检测HCl和NH3蒸气.
- 调查Curcuma longa颜料作为天然传感器材料用于气体检测的使用.
- 在真实世界的气体暴露场景中证明系统的有效性.
主要方法:
- 使用Curcuma longa提取物在玻璃支架上固定固定,制造了一种天然色素传感器.
- 设计了一个注射系统,使颜料薄膜暴露在受控度的HCl和NH3蒸气中.
- 一个光学检测系统捕获了蒸汽暴露前和后的色素膜的传输光谱.
- 颜料膜的颜色变化与气体度相关.
主要成果:
- 基于Curcuma longa的传感器对HCl和NH3蒸气都表现出高灵敏度.
- 在使用100μL的颜料膜时,检测到HCl的度低至0.009ppm.
- 在使用400μL的色素膜时,NH3的度低至0.03ppm.
- 在暴露于目标蒸气时,观察到明显的光谱变化和颜色变化.
结论:
- 长色素作为一个有效的天然材料用于光学气体传感器.
- 开发的光学系统提供了一种简单,灵敏和高效的方法来检测HCl和NH3.
- 这项技术在环境安全和工业危险检测方面有很大的应用潜力.
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