Journal
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
Volume 874, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jelechem.2020.114466
Keywords
Aluminium doped copper selenide nanoparticles; Screen-printed electrode; Electrochemical sensor; L-tyrosine; Pharmaceutical samples
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Funding
- Spanish Ministry of Science and Innovation [PID2019-104381GB-I00]
- JJCC Castilla-La Mancha [JCCM SBPLY/17/180501/000262]
- University of IBN ZOHR
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A simple method for the quantitative and determination of L-tyrosine was proposed in this work. Aluminium doped copper selenide nanoparticles (Al-CuSe-NPs), were used to modify screen printed carbon electrode (SPCE) to study the electrochemical behavior of L-tyrosine using voltammetric techniques such as cyclic voltammetry (CV) and linear sweep voltammetry (LSV). Al-CuSe-NPs were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The electrochemical results demonstrated that the Al-CuSe-NPs/SPCE exhibited high electro-catalytic activity and good analytical performance towards the detection of L-tyrosine. The linear range of L-tyrosine was 0.15-10 mu M with correlation coefficient of 0.9974. The detection limit of the L-tyrosine was 0.04 mu M. In addition, the Al-CuSe-NPs/SPCE exhibited good selectivity, high sensitivity and good reproducibility towards the determination of L-tyrosine, making it suitable sensor for the determination of L-tyrosine in pharmaceutical samples.
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