期刊
IEEE SENSORS LETTERS
卷 6, 期 8, 页码 -出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LSENS.2022.3194200
关键词
Sensors; Electrodes; Soil; Solids; Soil measurements; Wires; Electric potential; Sensor materials; soil pH sensors; electrochemical pH sensing; in-situ sensing
资金
- Ministry of Electronics and Information Technology (MeitY), Govt. of India, under the Nanoelectronics Network For Research and Application (NNetRA) Project
Rapid analysis of soil properties is crucial for precision agriculture. Soil pH, as an important aspect of precision farming, plays a significant role in determining crop type and yield. However, the conventional method of soil pH analysis is time-consuming and requires sophisticated instruments and skilled workforce. This study demonstrates an all-solid electrode, in-situ soil pH sensor that mitigates the drawbacks of the traditional method.
Rapid analysis of soil properties is an imperative component of precision agriculture. Soil pH, one of the essential facets of precision farming, helps to decide the type of crop to be grown in the field and also to predetermine the productivity of the crop. The analysis of soil pH is of utmost importance, as it plays a crucial role in controlling crop yield. However, the conventional method of soil pH analysis is time-consuming and requires sophisticated instruments and a skilled workforce. Here, an all-solid electrode, in-situ soil pH sensor is demonstrated, which mitigates many of the drawbacks associated with the traditional method of pH analysis. The soil pH sensor uses antimony as the sensing electrode and an in-house developed, novel solid reference electrode. The solid reference electrode is made by coating KCl saturated Araldite on the surface of an AgCl-coated Ag electrode. The pH sensor exhibits a linear response in the pH range from 3 to 8, with a sensitivity of -38.2 mV/pH and a correlation coefficient of 0.99.
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