2019
Influence of a polymer membrane on the electrochemical determination of insulin in nanomodified screen printed carbon electrodes
SISOLAKOVA, Ivana; Jana HOVANCOVA; Renata ORINAKOVA; Andrej ORIŇÁK; Libuše TRNKOVÁ et. al.Základní údaje
Originální název
Influence of a polymer membrane on the electrochemical determination of insulin in nanomodified screen printed carbon electrodes
Autoři
SISOLAKOVA, Ivana; Jana HOVANCOVA; Renata ORINAKOVA (garant); Andrej ORIŇÁK (703 Slovensko); Libuše TRNKOVÁ (203 Česká republika, domácí); Daniel Rueda GARCIA a Jozef RADONAK
Vydání
Bioelectrochemistry, SWITZERLAND, Elsevier, 2019, 1567-5394
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10608 Biochemistry and molecular biology
Stát vydavatele
Švýcarsko
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 4.722
Kód RIV
RIV/00216224:14310/19:00113430
Organizační jednotka
Přírodovědecká fakulta
UT WoS
000500037700002
EID Scopus
2-s2.0-85068461942
Klíčová slova anglicky
Insulin determination; Screen printed carbon electrodes; Polymer membrane; Nickel oxide nanoparticles; Chitosan
Štítky
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 31. 3. 2020 21:40, Mgr. Marie Novosadová Šípková, DiS.
Anotace
V originále
Diabetes mellitus can be considered one of the most widespread diseases globally. Hence, the diabetes research is currently focused on developing an effective, low-cost sensor having high stability and suitable analytical characteristics. Screen printed carbon electrodes (SPCEs) embody ideal candidates for insulin determination due to the small area of the working electrode eliminating the solution volume required for the given purpose. Modification of SPCEs by using nanoparticles resulted in an increase of the working electrode surface area and formation of a higher number of active species. The aim of this paper is to examine the impact of a chitosan membrane on the electrochemical determination of insulin on NiO nanoparticles (NiONPs) and multi-walled nanotube (MWCNTs) modified SPCE (NiONPs/MWCNTs/SPCE). This study is primarily conceived to compare the analytical characteristics and stability of NiONPs/chitosan-MWCNTs/SPCE and NiONPs/MWCNTs/SPCE. An electrode modified with chitosan displays a wider linear range, one of 0.25 mu M - 5 mu M (R-2 0.997); a lower limit of detection, 94 nM; a high sensitivity (0.021 mu A/mu M) and better stability than that of an electrode without chitosan. According to these characteristics, the polymer is considered a necessary compound of the electrochemical insulin sensor, improving the sensor's analytical characteristics.