用一系列基于碳纳米管的化学阻抗剂识别和量化水性消毒剂
Md Ali Akbar1, Omar Sharif1, P Ravi Selvaganapathy2,3
1Department of Chemistry and Chemical Biology, McMaster University, Hamilton ON L8S 4M1, Canada.
ACS applied engineering materials
|November 30, 2023
概括
这项研究引入了一种使用单壁碳纳米管 (SWCNT) 的新传感器阵列,用于识别和量化多种水消毒剂,确保更安全的饮用水. 无试剂系统可以准确地检测各种pH值的自由和甲等化学物质.
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:
- 精确监测水消毒剂度对于公共卫生至关重要,防止病原体的生长,同时避免对人类有害的暴露.
- 现有的方法难以同时识别和量化多种消毒剂,特别是在复杂的水矩阵中.
- 对于水处理设施的可靠,现场监测技术的需求正在增长.
研究的目的:
- 开发和演示一种新的无试剂化学阻抗传感阵列,用于同时识别和量化多种水消毒剂.
- 利用基于单壁碳纳米管 (SWCNT) 的功能和非功能传感器来区分各种消毒剂物种.
- 用化学分析验证传感器阵列在不同pH值和度的性能.
主要方法:
- 使用功能化和非功能化SWCNTs制造化学阻抗传感器阵列.
- 测试传感器阵列对不同度和pH值 (5.5至9.5) 的自由和 permanganate 的反应.
- 应用化学测量技术,包括主要成分分析 (PCA) 和部分最小平方差异分析 (PLS-DA),用于数据分析和分析物歧视.
主要成果:
- 基于SWCNT的传感器阵列成功地区分了自由和甲.
- 传感器反应表现出明显的,依赖度和pH值的行为,符合兰迈尔吸附异温模型.
- 通过PCA,在五种不同的pH值中,分析物分离得很好.
- 在分析物鉴定中,PLS-DA实现了高可预测性 (Q2 = 94.26%) 和准确性 (R2 = 95.67%).
结论:
- 这项概念验证研究验证了基于SWCNT的化学阻抗传感器阵列的使用,以有效监测水性消毒剂.
- 开发的技术为实时现场检测水处理和配送系统中的多种消毒剂提供了一个有前途的平台.
- 这种方法代表了水质监测的重大进步,提高了饮用水供应的安全性和可靠性.
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