Title: IN SITU ELECTROCHEMICAL METHOD FOR DETERMINING NICKEL IONS IN VEGETABLES

Title: IN SITU ELECTROCHEMICAL METHOD FOR DETERMINING NICKEL IONS IN VEGETABLES

  BibTex  
616
Peer Reviewed
IN SITU ELECTROCHEMICAL METHOD FOR DETERMINING NICKEL IONS IN VEGETABLES
L. Anchidin-Norocel; S. Amariei; G. Gutt
2021
10.5593/sgem2021/6.1/s25.22
1314-2704
978-619-7603-30-9
21
6.1
• Prof. DSc. Oleksandr Trofymchuk, UKRAINE
• Prof. Dr. hab. oec. Baiba Rivza, LATVIA
Advances in Biotechnology
Detection of nickel ions in various foods, especially fruits, is very important for the prophylaxis of patients with allergic contact dermatitis to this heavy metal. Currently, there are a limited number of rapid methods for identifying nickel ions, so it is necessary to develop new biosensors in this area, by improving selectivity of ligands and utilization of immobilization elements suitable for nickel ions. The mentioned elements are very important because they can increase the selectivity, sensitivity and can decrease the detection limit. Therefore, there is a need for the development of miniaturized electrochemical sensor and optimized the immobilization condition of ligands to improve performance characteristics. The aim of this study was to bring these advantages in addition to existing sensors by using the L-cysteine. As is known a nickel cysteine complex (NiCys) can form easily because Ni(II) induces deprotonation and coordination of the amide nitrogens, and the stable monomeric or oligomeric complexes are formed, depending on the metal to ligand molar ratios. For this purpose, many types (graphene, bismuth oxide and carbon) of SPEs (screen-printed electrodes) were used with a potentiostat which displays the response in the form of a cyclic voltammogram. In first stage there were used for nickel standard solution with different concentration, then obtaining good results, they were also used for food products. Furthermore, the sensor shows a better selectivity in the presence of common interfering species, also improved analytical performance characteristics.
allergy; biosensor; cyclic voltammogram; nickel
conference
21st International Multidisciplinary Scientific GeoConference SGEM 2021
21st International Multidisciplinary Scientific GeoConference SGEM 2021, 16 - 22 August, 2021
Proceedings Paper
STEF92 Technology
SGEM International Multidisciplinary Scientific GeoConference
SWS Scholarly Society; Acad Sci Czech Republ; Latvian Acad Sci; Polish Acad Sci; Serbian Acad Sci & Arts; Natl Acad Sci Ukraine; Natl Acad Sci Armenia; Sci Council Japan; European Acad Sci, Arts & Letters; Acad Fine Arts Zagreb Croatia; Croatian Acad Sci
101-106
16 - 22 August, 2021
website
cdrom
8266