High index facets-Ag nanoflower enabled efficient electrochemical detection of lead in blood serum and cosmetics
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
Author(s)
Detail(s)
Original language | English |
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Article number | 114657 |
Journal / Publication | Journal of Electroanalytical Chemistry |
Volume | 878 |
Online published | 11 Sept 2020 |
Publication status | Published - 1 Dec 2020 |
Externally published | Yes |
Link(s)
Abstract
Owing to its importance in environmental pollution and human toxicity, the development of a simple and selective sensor for heavy metal ions is a continued research interest in cross-disciplinary areas of analytical chemistry. The colorimetric analysis based conventional complexation assay of Pb2+ is a cumbersome procedure for practical applications. Herein, we report a novel electrochemical sensor approach based on a high index facets (HIF)‑silver nanoflower modified glassy carbon electrode (AgNF@GCE) for anodic stripping voltammetric detection of lead ion in a pH 4.5 acetate buffer solution. Physicochemical techniques such as XPS, FESEM, and electrochemical studies with Fe(CN)63 were adopted for the surface characterization of the AgNF@GCE. Unlike the conventional Ag-nanoparticles, this new system provides a highly crystalline and large surface area with HIF's {422} and {111} for sensitive and selective electrochemical analysis of Pb2+ ion. Under an optimal experimental condition, AgNF@GCE showed a linear calibration plot in the range of 10–700 ppb of Pb2+ ion with a detection limit 0.74 ppb. Eight repetitive measurements of 50 ppb Pb2+ yielded a relative standard deviation value of 2.8%. The sensor showed tolerable interference with other metal ions such as Cu2+, Fe2+, Mg2+, Ni2+, K+, and Na+. As practical applicability, selective detection of lead concentration in blood-serum and cosmetics were successfully analyzed with appreciable recovery values.
Research Area(s)
- Anodic stripping voltammetry, Electrochemical detection of lead ion, High-index facet, Selective and real-time analysis, Silver nanoflower
Citation Format(s)
High index facets-Ag nanoflower enabled efficient electrochemical detection of lead in blood serum and cosmetics. / Swetha, Puchakayala; Chen, Jianan; Kumar, Annamalai Senthil et al.
In: Journal of Electroanalytical Chemistry, Vol. 878, 114657, 01.12.2020.
In: Journal of Electroanalytical Chemistry, Vol. 878, 114657, 01.12.2020.
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review