Abstract
Flow-through detector with renewable working material based on glassy carbon or copper microparticles was used for flow injection determination of tyrosine by direct oxidation and phenylalanine via the complexation reaction with copper ions, respectively. Copper-based detector allows the determination of electrochemically inactive amino acid, but the detection conditions are limited and fabrication and handling of the detector are more demanding. Low working potential, applied for the detection on copper microparticles, makes the determination very selective. Moreover, low baseline noise compensates lower sensitivity of copper-based detector, enabling to reach quantification limit 4.7×10 −6 mol L −1 , in comparison with quantification limit 1.6×10 −6 mol L −1 obtained for tyrosine on carbon-based detector.
| Original language | English |
|---|---|
| Pages (from-to) | 357-362 |
| Number of pages | 6 |
| Journal | Electroanalysis |
| Volume | 31 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 1 Feb 2019 |
| Externally published | Yes |
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Keywords
- copper microparticles
- Flow injection analysis
- glassy carbon microparticles
- renewable electrode material
ASJC Scopus subject areas
- Analytical Chemistry
- Electrochemistry
Cite this
Comparison of Glassy Carbon and Copper Microparticles as a Renewable Working Electrode Material for Amperometric Determination of Amino Acids Using Flow Through Detector. / Mika, Jan; Barek, Jiří; Zima, Jiří; Prokešová, Edita; Dejmkova, Hana.
In: Electroanalysis, Vol. 31, No. 2, 01.02.2019, p. 357-362.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Comparison of Glassy Carbon and Copper Microparticles as a Renewable Working Electrode Material for Amperometric Determination of Amino Acids Using Flow Through Detector
AU - Mika, Jan
AU - Barek, Jiří
AU - Zima, Jiří
AU - Prokešová, Edita
AU - Dejmkova, Hana
PY - 2019/2/1
Y1 - 2019/2/1
N2 - Flow-through detector with renewable working material based on glassy carbon or copper microparticles was used for flow injection determination of tyrosine by direct oxidation and phenylalanine via the complexation reaction with copper ions, respectively. Copper-based detector allows the determination of electrochemically inactive amino acid, but the detection conditions are limited and fabrication and handling of the detector are more demanding. Low working potential, applied for the detection on copper microparticles, makes the determination very selective. Moreover, low baseline noise compensates lower sensitivity of copper-based detector, enabling to reach quantification limit 4.7×10 −6 mol L −1 , in comparison with quantification limit 1.6×10 −6 mol L −1 obtained for tyrosine on carbon-based detector.
AB - Flow-through detector with renewable working material based on glassy carbon or copper microparticles was used for flow injection determination of tyrosine by direct oxidation and phenylalanine via the complexation reaction with copper ions, respectively. Copper-based detector allows the determination of electrochemically inactive amino acid, but the detection conditions are limited and fabrication and handling of the detector are more demanding. Low working potential, applied for the detection on copper microparticles, makes the determination very selective. Moreover, low baseline noise compensates lower sensitivity of copper-based detector, enabling to reach quantification limit 4.7×10 −6 mol L −1 , in comparison with quantification limit 1.6×10 −6 mol L −1 obtained for tyrosine on carbon-based detector.
KW - copper microparticles
KW - Flow injection analysis
KW - glassy carbon microparticles
KW - renewable electrode material
UR - http://www.scopus.com/inward/record.url?scp=85059871929&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85059871929&partnerID=8YFLogxK
U2 - 10.1002/elan.201800650
DO - 10.1002/elan.201800650
M3 - Article
VL - 31
SP - 357
EP - 362
JO - Macromolecular Chemistry and Physics
JF - Macromolecular Chemistry and Physics
SN - 1040-0397
IS - 2
ER -