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电化学土壤酸盐传感器用于现场实时监测

Mohammed A Eldeeb¹, Vikram Narayanan Dhamu¹, Anirban Paul¹

¹Department of Bioengineering, University of Texas at Dallas, Richardson, TX 75080, USA.

|July 29, 2023

概括

这项研究引入了一种新的电化学土壤酸盐传感器,用于实时监测. 该传感器在不经预处理的情况下,在各种土壤类型中提供准确的酸盐测量,支持可持续农业.

科学领域:

农业科学农业科学
环境科学环境科学
电化学电化学电化学

背景情况:

全球不断增长的粮食需求使土壤资源受到压力,导致荒漠化和粮食不安全.
可持续农业需要实时的土壤健康数据,以便农民做出明智的决策.
目前用于测量土壤酸盐的方法往往缺乏实时能力或需要进行土壤预处理.

研究的目的:

开发和评估一种离子选择性电极 (ISE) 电化学传感器,用于直接实时测量土壤酸盐.
评估传感器在不同土壤质地上的性能,而无需预处理.
为了证明传感器在现场对土壤酸盐动态的持续监测的能力.

主要方法:

使用电化学阻抗光谱学 (EIS) 开发一种离子选择性电极 (ISE) 传感器.
在传感器制造过程中,将ISE落到工作电极上.
在土,沙土和粘土土土壤上测试传感器性能,其酸盐范围为5-512 ppm.

主要成果:

传感器在各种土壤纹理中显示出依赖酸盐的反应,R2>0.97.
验证显示,与参考酸盐测量相比,错误率低于20%.
一项为期7天的现场研究证实了传感器能够以<20%的误差跟踪时间酸盐变化.

结论:

开发的ISE电化学传感器可以在没有预处理的情况下直接实时测量土壤酸盐.
传感器在各种土壤纹理和动态环境条件下表现出强大的性能.
这项技术支持数据驱动的决策,以实现可持续农业和改善土壤管理.

关键词:

电化学传感传感器是一种电化学传感器.在现场的土壤酸盐传感器.实时持续的土壤监测实时持续的土壤监测土壤质地三角形土壤质地三角形

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