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S&M3427 Research Paper of Special Issue https://doi.org/10.18494/SAM4431 Published in advance: August 24, 2023 Published: October 25, 2023 Continuous Extraction and Electrochemical Monitoring of Potassium Ions in a Plant Leaf Using a Wearable Ion Sensor [PDF] Kuniaki Nagamine, Natsuki Kudo, Hajime Sasaki, Arina Asano, and Shigeyuki Iwasa (Received April 17, 2023; Accepted July 27, 2023) Keywords: plant, biosensor, smart agriculture
To the best of our knowledge, this is the first study to show the minimally invasive extraction and continuous monitoring of potassium ions (K+) in a plant leaf, which is one of the most important electrolytes in plant cells. By utilizing the leaching phenomenon, K+ in a leaf was extracted using an extraction solution, which is composed of phosphate-buffered saline and a surfactant, TritonX-100. K+ sensor films were placed in contact with the leaf surface via a membrane soaked in the extraction solution to detect K+ extracted from the leaf into the extraction solution. This novel plant-wearable sensor is expected to enable the minimally invasive daily monitoring of the chemical compounds in leaves for advancements in plant healthcare in future agriculture.
Corresponding author: Kuniaki NagamineThis work is licensed under a Creative Commons Attribution 4.0 International License. Cite this article Kuniaki Nagamine, Natsuki Kudo, Hajime Sasaki, Arina Asano, and Shigeyuki Iwasa, Continuous Extraction and Electrochemical Monitoring of Potassium Ions in a Plant Leaf Using a Wearable Ion Sensor, Sens. Mater., Vol. 35, No. 10, 2023, p. 4751-4760. |