Electrochemical determination of lead ion with DNA oligonucleotide-based biosensor using anionic redox marker
Agnieszka Bala , Mariusz Pietrzak , Łukasz Górski , Elżbieta Malinowska
AbstractThe development of DNA-modified electrodes for the determination of lead cation is described. The performance of anionic (AQMS) and cationic (methylene blue) redox markers for this aim is compared. It is shown that the use of anionic marker results in a significantly better analytical parameters, as compared to measurements with cationic marker. The optimized sensor distinguishes itself with high selectivity towards lead cation and lower detection limit of 0.42 10−8 mol dm−3. The interaction between lead ion and DNA strands were studied using electrochemical impedance spectroscopy (EIS) and surface plasmon resonance with imaging (SPRi).
|Journal series||Electrochimica Acta, ISSN 0013-4686, (A 40 pkt)|
|Publication size in sheets||0.5|
|Keywords in English||Electrochemical sensor; DNA-based biosensor; Metal ion determination|
|Score|| = 40.0, 12-03-2019, ArticleFromJournal|
= 40.0, 12-03-2019, ArticleFromJournal
|Publication indicators||= 11; : 2017 = 1.101; : 2015 = 4.803 (2) - 2015=4.721 (5)|
|Citation count*||1 (2016-09-14)|
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.