Voltammetric screen-printed carbon sensor modified with multiwalled carbon nanotubes and bismuth film for trace analysis of thallium(I)
 
More details
Hide details
1
Maria Curie-Skłodowska University
 
 
Publication date: 2019-09-24
 
 
Corresponding author
Katarzyna Tyszczuk-Rotko   

Maria Curie-Skłodowska University
 
 
Physicochem. Probl. Miner. Process. 2019;55(6):1422-1428
 
KEYWORDS
TOPICS
ABSTRACT
The paper investigates the possibility of using commercially available screen-printed sensors with carbon nanomaterials modified working electrodes to anodic stripping voltammetric determination of trace concentrations of Tl(I). Each working electrode was additionally plated in-situ with a bismuth film (BiF). The highest analytical signal of Tl(I) at potential of -0.65 V (vs. pseudo- reference silver electrode) was achieved at the screen-printed carbon sensor with multiwalled carbon nanotubes and bismuth film modified working electrode (SPCE/MWCNTs/BiF). The calibration curve was linear in the range of Tl(I) concentrations from 1·10-8 to 1·10-6 mol·dm-3 (-0.9 V, 180 s). The developed procedure of Tl(I) determination at this sensor allowed to achieve the low limits of detection and quantification of Tl(I), 2.8·10-9 and 9.3·10-9 mol·dm-3 respectively. The method was used to determine thallium in the spiked water samples from the Vistula river.
eISSN:2084-4735
ISSN:1643-1049
Journals System - logo
Scroll to top