一种基于纸张的分析装置,用于在气溶防剂中快速测定的色度
Letícia L Ferreira1, Almir A de Carvalho1, Marcela L C de Souza1
1Instituto de Química, Universidade de Brasília, Campus Darcy Ribeiro, Brasília, DF, 70910-900, Brazil. cyro.chagas@unb.br.
概括
一种新的,低成本的基于纸的分析装置 (PAD) 能够在气溶防剂中进行色度分析. 通过碳纳米管进行修改,该设备提供与传统方法相比准确的结果,适合资源有限的环境.
科学领域:
- 分析化学 分析化学
- 材料科学 材料科学 材料科学
背景情况:
- 消费品中的分析对于安全和质量控制至关重要.
- 现有的方法可能很昂贵,需要专门的设备.
- 需要开发便携且具有成本效益的分析工具.
研究的目的:
- 开发一种简单,低成本的基于纸张的分析装置 (PAD) 用于在气溶防剂中确定.
- 优化分析参数并评估PAD的性能.
- 根据标准分析技术验证开发的方法.
主要方法:
- 使用35个反应区的纸张和袋膜制造PAD.
- 使用Eriochrome Cyanine R.进行 (III) 的色度检测.
- 试剂体积的优化和用纳米材料 (多壁碳纳米管) 浸.
- 使用基于智能手机的图像分析和与微波等离子原子发射光谱学 (MP-AES) 的比较进行量化.
主要成果:
- 经过修改的PAD实现了0.52毫克L-1的检测极限 (LOD) 和1.56毫克L-1.1的量化极限 (LOQ).
- 通过PAD确定的气溶防剂中的含量显示了与MP-AES. 统计学上可比的结果.
- 恢复测定范围从91.7%到105.9%,表明高精度.
结论:
- 开发的PAD提供了一种简单,快速和经济高效的方法,用于在气溶防剂中分析.
- 使用多壁碳纳米管显著提高了PAD的分析性能.
- 这种方法适合在资源有限的环境中进行现场分析,扩大分析能力.
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