Simultaneous quantification of Cd(II) and Pb(II) in surface marine sediments using Ag–Hg and Ag–Bi nanoalloys glassy carbon modified electrodes

Danny Valera; Lenys Fernández; Gema González; Hugo Romero; Omar Martínez; Patricio J. Espinoza-Montero

doi:10.1016/j.heliyon.2021.e07120

Simultaneous quantification of Cd(II) and Pb(II) in surface marine sediments using Ag–Hg and Ag–Bi nanoalloys glassy carbon modified electrodes

Danny Valera, Lenys Fernández^*, Gema González, Hugo Romero, Omar Martínez, Patricio J. Espinoza-Montero

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

The evaluation of glassy carbon (GC) electrodes modified with a Nafion (Nf) film and doped with nanoalloys (Nys) deposits of Ag–Hg and Ag–Bi and their application to determination of Cd (II) and Pb(II) in marine sediments, is described. Deposited Ag–Hg and AgBi Nys have a size of approximately ~80 nm dispersed and embedded inside the booths of the Nf net, while other of them remained on Nf net surface. For the AgBiNysNf-GC electrode, a detection limit (DL), 3 s criterion, slightly higher than for the AgHgNysNf-GC modified electrode was obtained. Accuracy of measurements was asserted by comparison with quantification of Cd and Pb in three sets of marine sediments samples previously analyzed by inductively coupled plasma optical emission spectroscopy (ICP-OES). The values of the standard deviation and the coefficients of variation are very low, and also comparable between the different determinations.

Original language	English
Article number	e07120
Journal	Heliyon
Volume	7
Issue number	5
DOIs	https://doi.org/10.1016/j.heliyon.2021.e07120
State	Published - May 2021

Bibliographical note

Publisher Copyright:
© 2021 The Authors

Funding

The work was supported by Pontificia Universidad Católica del Ecuador , Universidad Simón Bolívar Caracas-Venezuela , and Corporación Ecuatoriana para el Desarrollo de la Investigación y la Academia (CEDIA) . The work was supported by Pontificia Universidad Cat?lica del Ecuador, Universidad Sim?n Bol?var Caracas-Venezuela, and Corporaci?n Ecuatoriana para el Desarrollo de la Investigaci?n y la Academia (CEDIA).

Funders	Funder number
CEDIA
Corporaci?n Ecuatoriana para el Desarrollo de la Investigaci?n y la Academia
Corporación Ecuatoriana para el Desarrollo de la Investigación y la Academia
Pontificia Universidad Cat?lica del Ecuador, Universidad Sim?n Bol?var Caracas-Venezuela
Universidad Simón Bolívar Caracas-Venezuela

Keywords

Bimetallic nanoparticles
ICP-OES spectroscopy
Modified electrodes
Pb and Cd anodic stripping voltammetry

Access to Document

10.1016/j.heliyon.2021.e07120

Cite this

@article{c6c5112742054bc0bded323f54de8d7b,

title = "Simultaneous quantification of Cd(II) and Pb(II) in surface marine sediments using Ag–Hg and Ag–Bi nanoalloys glassy carbon modified electrodes",

abstract = "The evaluation of glassy carbon (GC) electrodes modified with a Nafion (Nf) film and doped with nanoalloys (Nys) deposits of Ag–Hg and Ag–Bi and their application to determination of Cd (II) and Pb(II) in marine sediments, is described. Deposited Ag–Hg and AgBi Nys have a size of approximately ~80 nm dispersed and embedded inside the booths of the Nf net, while other of them remained on Nf net surface. For the AgBiNysNf-GC electrode, a detection limit (DL), 3 s criterion, slightly higher than for the AgHgNysNf-GC modified electrode was obtained. Accuracy of measurements was asserted by comparison with quantification of Cd and Pb in three sets of marine sediments samples previously analyzed by inductively coupled plasma optical emission spectroscopy (ICP-OES). The values of the standard deviation and the coefficients of variation are very low, and also comparable between the different determinations.",

keywords = "Bimetallic nanoparticles, ICP-OES spectroscopy, Modified electrodes, Pb and Cd anodic stripping voltammetry",

author = "Danny Valera and Lenys Fern{\'a}ndez and Gema Gonz{\'a}lez and Hugo Romero and Omar Mart{\'i}nez and Espinoza-Montero, {Patricio J.}",

note = "Publisher Copyright: {\textcopyright} 2021 The Authors",

year = "2021",

month = may,

doi = "10.1016/j.heliyon.2021.e07120",

language = "English",

volume = "7",

journal = "Heliyon",

issn = "2405-8440",

publisher = "Elsevier B.V.",

number = "5",

}

TY - JOUR

T1 - Simultaneous quantification of Cd(II) and Pb(II) in surface marine sediments using Ag–Hg and Ag–Bi nanoalloys glassy carbon modified electrodes

AU - Valera, Danny

AU - Fernández, Lenys

AU - González, Gema

AU - Romero, Hugo

AU - Martínez, Omar

AU - Espinoza-Montero, Patricio J.

PY - 2021/5

Y1 - 2021/5

N2 - The evaluation of glassy carbon (GC) electrodes modified with a Nafion (Nf) film and doped with nanoalloys (Nys) deposits of Ag–Hg and Ag–Bi and their application to determination of Cd (II) and Pb(II) in marine sediments, is described. Deposited Ag–Hg and AgBi Nys have a size of approximately ~80 nm dispersed and embedded inside the booths of the Nf net, while other of them remained on Nf net surface. For the AgBiNysNf-GC electrode, a detection limit (DL), 3 s criterion, slightly higher than for the AgHgNysNf-GC modified electrode was obtained. Accuracy of measurements was asserted by comparison with quantification of Cd and Pb in three sets of marine sediments samples previously analyzed by inductively coupled plasma optical emission spectroscopy (ICP-OES). The values of the standard deviation and the coefficients of variation are very low, and also comparable between the different determinations.

AB - The evaluation of glassy carbon (GC) electrodes modified with a Nafion (Nf) film and doped with nanoalloys (Nys) deposits of Ag–Hg and Ag–Bi and their application to determination of Cd (II) and Pb(II) in marine sediments, is described. Deposited Ag–Hg and AgBi Nys have a size of approximately ~80 nm dispersed and embedded inside the booths of the Nf net, while other of them remained on Nf net surface. For the AgBiNysNf-GC electrode, a detection limit (DL), 3 s criterion, slightly higher than for the AgHgNysNf-GC modified electrode was obtained. Accuracy of measurements was asserted by comparison with quantification of Cd and Pb in three sets of marine sediments samples previously analyzed by inductively coupled plasma optical emission spectroscopy (ICP-OES). The values of the standard deviation and the coefficients of variation are very low, and also comparable between the different determinations.

KW - Bimetallic nanoparticles

KW - ICP-OES spectroscopy

KW - Modified electrodes

KW - Pb and Cd anodic stripping voltammetry

UR - http://www.scopus.com/inward/record.url?scp=85106926571&partnerID=8YFLogxK

U2 - 10.1016/j.heliyon.2021.e07120

DO - 10.1016/j.heliyon.2021.e07120

M3 - Article

AN - SCOPUS:85106926571

SN - 2405-8440

VL - 7

JO - Heliyon

JF - Heliyon

IS - 5

M1 - e07120

ER -

Simultaneous quantification of Cd(II) and Pb(II) in surface marine sediments using Ag–Hg and Ag–Bi nanoalloys glassy carbon modified electrodes

Abstract

Bibliographical note

Funding

Keywords

Access to Document

Other files and links

Fingerprint

Cite this