Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5139046 | Microchemical Journal | 2017 | 31 Pages |
Abstract
This work demonstrates the sensitive amperometric determination of omeprazole on screen-printed electrodes (SPE) using batch-injection analysis (BIA). A SPE containing a multiwalled carbon nanotube modified electrode coupled to the BIA system provided an analytical method with a low detection limit (9 nmol Lâ 1), high precision (1.3%) and sample throughput (120 hâ 1), employing microliter sample volumes injected by an electronic micropipette. The full analytical system presents portable characteristics that enable application for on-site analysis. Analytical results for pharmaceutical samples analyzed by the proposed method were in agreement with those obtained by spectrophotometry. Moreover, the BIA method presented advantages over the flow-injection analysis with amperometric detection such as detection limit, sensitivity, and sample throughput.
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
Jéssica S. Stefano, Thiago F. Tormin, JamÃlia P. da Silva, Eduardo M. Richter, Rodrigo A.A. Munoz,