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A wearable electrochemical sensor for the monitoring of neonicotinoid insecticides, salicylic acid and the pH in plant guttation

文献类型： 外文期刊

作者： Chu, Guanglei 1 ; Yu, Siping 2 ; Wang, Yuhang 2 ; Zhang, Weifeng 4 ; Xue, Bing 4 ; Huang, Jinqi 2 ; Wang, Zhiwei 2 ; Luo, Jianghe 2 ; Sun, Xia 1 ; Li, Ming 1 ;

作者机构： 1.Shandong Univ Technol, Sch Agr Engn & Food Sci, 266 Xincun Xilu, Zibo 255049, Shandong, Peoples R China

2.Hunan Acad Agr Sci, Hunan Agr Equipment Res Inst, 892 Yuanda Second Rd, Changsha 410125, Hunan, Peoples R China

3.Hunan Univ, Coll Biol, LongPing Branch, 892 Yuanda Second Rd, Changsha 410125, Hunan, Peoples R China

4.Natl Univ Singapore, Dept Mat Sci & Engn, 21 Lower Kent Ridge Rd, Singapore 119077, Singapore

5.Hunan Acad Agr Sci, Hunan Engn Res Ctr Hilly & Mountainous Multifunct, 892 Yuanda Second Rd, Changsha 410125, Hunan, Peoples R China

6.Hunan Acad Agr Sci, Hunan Engn Technol Res Ctr Agr Aviat Adv Technol, 892 Yuanda Second Rd, Changsha 410125, Hunan, Peoples R China

7.Hunan Engn Technol Res Ctr Hilly & Mountainous Pow, 892 Yuanda Second Rd, Changsha 410125, Hunan, Peoples R China

关键词： Wearable electrochemical sensor; Plant health monitoring; Guttation; Neonicotinoid insecticides; Salicylic acid; pH

期刊名称：CHEMICAL ENGINEERING JOURNAL （ 影响因子：13.2； 五年影响因子：13.5 ）

ISSN： 1385-8947

年卷期： 2024 年 498 卷

页码：

收录情况： SCI

摘要： Wearable plant sensors can continuously monitor the material absorption and health status of a plant, thereby providing data that can be used to provide precise crop management. Herein, we describe a noninvasive wearable electrochemical sensor designed for monitoring plant guttation that is capable of detecting trace levels of neonicotinoid insecticides, salicylic acid, and pH. The sensor electrodes are prepared using an improved laserinduced graphene (LIG) printing method, with which a single set (six sensors) can be fabricated in only 15.6 s. Leveraging the high surface area and conductivity of LIG, trace-level electrochemical testing for neonicotinoid insecticides, salicylic acid, and pH can be achieved without the need for electrode surface modification. When the sensors are combined with a guttation collection module, the repeated collection of the guttation fluid becomes possible. The sensor weighs only 0.1 g and can be connected to a portable electrochemical workstation and smartphone for real-time on-site data collection. The practical value of the sensor was validated by monitoring the guttation fluid produced by rice, placed under stress through the application of neonicotinoid insecticide, and real-time pH calibration. This noninvasive wearable sensor for monitoring plant guttation enables the real-time detection of target substances, avoids plant stress caused by sensor intrusion, and provides a new direction for the future development of wearable plant sensors.

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