All-solid-state potentiometric salicylic acid sensor for in-situ measurement of plant

Using PEDOT as the conductive polymer, an innovative small-scale sensor for directly measuring salicylate ions in plants was developed, which avoided the complicated sample pretreatment of traditional analytical methods and realized the rapid detection of salicylic acid. The results demonstrate that...

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Bibliographic Details
Published in:Analytical and bioanalytical chemistry 2023-04, Vol.415 (10), p.1979-1989
Main Authors: Fan, Cheng-Xiao, Li, Jin-Hai, Yao, Jie-Peng, Liu, Jing-Jing, Wang, Nan, Huang, Lan, Wang, Zhong-Yi
Format: Article
Language:English
Subjects:
Acids
Analysis
Analytical Chemistry
Biochemistry
Biosensors
Characterization and Evaluation of Materials
Chemistry
Chemistry and Materials Science
Chloride
Conducting polymers
Electrodes
Experiments
Food Science
Identification and classification
In situ measurement
In vivo methods and tests
Ions
Laboratory Medicine
Monitoring/Environmental Analysis
Polymers
Potentiometry
Pretreatment
Research Paper
Salicylic acid
Sensors
Sodium
Solid state
Stability analysis
Work stations
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Summary:Using PEDOT as the conductive polymer, an innovative small-scale sensor for directly measuring salicylate ions in plants was developed, which avoided the complicated sample pretreatment of traditional analytical methods and realized the rapid detection of salicylic acid. The results demonstrate that this all-solid-state potentiometric salicylic acid sensor is easy to miniaturize, has a longer lifetime (≥1 month), is more robust, and can be directly used for the detection of salicylate ions in real samples without any additional pretreatment. The developed sensor has a good Nernst slope (63.6 ± 0.7 mV/decade), the linear range is 10 −2  ~ 10 −6 M, and the detection limit can reach (2.8 × 10 −7  M). The selectivity, reproducibility, and stability of the sensor were evaluated. The sensor can perform stable, sensitive, and accurate in situ measurement of salicylic acid in plants, and it is an excellent tool for determining salicylic acid ions in plants in vivo. Graphical abstract
ISSN:1618-2642
1618-2650
DOI:10.1007/s00216-023-04616-8