便携式基于纸张的传感平台,用于快速同时测量环境pH值和可溶性反应
Yuanyuan Lu1, Tingting Ma1, Menghuan Zhang1
1Key laboratory of watershed non-point source pollution control and water eco-security of Ministry of Water Resources, College of Environmental and Resources Sciences, Zhejiang University, Hangzhou 310058, China.
ACS sensors
|June 4, 2025
概括
一个新的便携式传感器准确地测量农业用水中的可溶性反应 (SRP) 和pH值. 这一突破有助于管理营养物质流失,防止淡水缩.
科学领域:
- 环境科学 环境科学
- 分析化学 分析化学
- 电化学 电化学 电化学
背景情况:
- 淡水过度缩是一个主要的环境问题,由过多的驱动.
- 准确量化生物可用 (BP),特别是微量可溶反应 (SRP),对于有效的缓解至关重要.
- 现有的SRP检测方法在现实世界pH条件和现场适用性方面面临挑战.
研究的目的:
- 开发一款便携式纸质电化学传感器,用于同时监测农业用水中的SRP和pH值.
- 为了能够在相关的环境pH范围内准确量化SRP,并且干扰最小.
- 为农业环境中分的现场差异化提供一个工具.
主要方法:
- 开发一种基于纸张的电化学传感器平台.
- 使用方形波电压计 (SWV) 进行电化学分析.
- 在传感器响应 (峰值电流/电位) 和分析剂度 (SRP/pH) 之间建立双线性相关性.
主要成果:
- 传感器实现了同时监测SRP和pH,SRP的检测极限 (LOD) 低于2μM.
- 建立了双线性相关性:峰值电流与SRP度和峰值电力与pH (范围为1-7) 相比.
- 现场验证表明,传感器能够在不改变样品pH的情况下区分溶解和体分数.
结论:
- 便携式传感器为农业用水中SRP和pH的现场监测提供了强大的解决方案.
- 这项技术克服了传统方法的局限性,使得在各种环境条件下能够准确评估含量.
- 开发的工具通过提供对生物可用性的关键见解,促进了可持续的营养管理.
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