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Thermoplastic electrodes as a new electrochemical platform coupled to microfluidic devices for tryptamine determination
- Source :
- Analytica chimica acta. 1147
- Publication Year :
- 2020
-
Abstract
- This study reports a new electrochemical method for tryptamine determination using a paper-based microfluidic device and a thermoplastic electrode (TPE) as an amperometric detector. Tryptamine (Tryp) is a biogenic amine present in drinks and foods. Even though this compound has some beneficial effects on human health, the ingestion of foods with high concentrations of Tryp may be detrimental, which justifies the need for monitoring the Tryp levels. The TPEs were made from 50% carbon black and 50% polycaprolactone and characterized by cyclic voltammetry, demonstrating enhancement in the analytical response compared to other carbon composites. TPEs also showed a better antifouling effect for Tryp compared to conventional glassy carbon electrodes. Once characterized, the electrodes were incorporated into the microfluidic device to determine Tryp in water and cheese samples using amperometry. A linear range was achieved from 10 to 75 μmol L−1 with limits of detection and quantification of 3.2 and 10.5 μmol L−1, respectively. Therefore, this work shows promising findings of the electrochemical determination of Tryp, bringing valuable results regarding the electrochemical properties of thermoplastic composites.
- Subjects :
- Tryptamine
02 engineering and technology
Glassy carbon
01 natural sciences
Biochemistry
Analytical Chemistry
chemistry.chemical_compound
Lab-On-A-Chip Devices
Environmental Chemistry
Humans
Electrodes
Spectroscopy
Detection limit
Chemistry
010401 analytical chemistry
Carbon black
Electrochemical Techniques
021001 nanoscience & nanotechnology
Amperometry
Carbon
Tryptamines
0104 chemical sciences
Linear range
Chemical engineering
Electrode
Cyclic voltammetry
0210 nano-technology
Subjects
Details
- ISSN :
- 18734324
- Volume :
- 1147
- Database :
- OpenAIRE
- Journal :
- Analytica chimica acta
- Accession number :
- edsair.doi.dedup.....59dcef3a19e89bb9c3914405592700c8