生物炭用于电化学硫胺检测:碳糊和印电极的比较评估
Lucas L Cabral1, Cristiane Kalinke1,2, Marcia G P Valenga1
1Laboratory of Electrochemical Sensors (LabSensE), Department of Chemistry, Federal University of Paraná, 81531-980 Curitiba, PR, Brazil.
ACS omega
|August 11, 2025
概括
这项研究引入了一种新的电化学传感器,使用甘包生物炭来检测废水中的硫胺 (SFD). 环保传感器提供了一种具有成本效益和灵敏的环境监测方法.
科学领域:
- 环境化学环境化学
- 分析化学 分析化学
- 材料科学 材料科学 材料科学
背景情况:
- 像硫胺 (SFD) 这样的抗生素在废水中持续存在,造成环境和健康风险.
- 传统的SFD检测方法往往昂贵且耗时.
- 需要可持续,具有成本效益和灵敏的SFD检测技术.
研究的目的:
- 开发一种从甘中提取的活性生物炭,用于修改电化学传感器.
- 使用吸附剥离电压计 (AdSV) 进行敏感的SFD检测.
- 为了评估生物炭改性碳糊电极 (CPME-BCA) 和丝印碳电极 (SPCE-BCA) 的性能.
主要方法:
- 来自甘包的活性生物炭被HNO3 (BCA) 功能化.
- BCA被纳入碳糊电极 (CPE) 和印碳电极 (SPCE) 中.
- 经过修改的电极 (CPME-BCA,SPCE-BCA) 的电化学性能被优化并使用AdSV进行评估.
主要成果:
- 经过BCA修改的电极显著增强了SFD氧化信号.
- 优化的SPCE-BCA实现了线性检测范围为5.0 × 10−9至5.0 × 10−6mol L−1.1.
- SPCE-BCA具有较低的检测极限 (1.5 × 10−9 mol L−1),高可重现性 (RSD 4.92%),并且在真实样本 (自来水,牛奶,尿液) 中成功应用,回收率为90.7-111%.
结论:
- 来自甘包的生物炭是一种具有成本效益和环保的材料,用于电化学传感.
- SPCE-BCA为各种矩阵中的SFD监控提供了一个可扩展和高效的解决方案.
- 这种方法为传统的抗生素检测方法提供了可持续的替代方案.
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