Fabrication of an effective gold nanoparticle/graphene/Nafion® modified glassy carbon electrode for high sensitive detection of trace Cd<sup>2+</sup>, Pb<sup>2+</sup> and Cu<sup>2+</sup> in tobacco and tobacco products

The heavy metal contamination in tobacco (nicotania tabacum) and tobacco products was investigated in this study. Samples of commercially available cigarettes and traditional Philippine cigars, dried tobacco leaves, tobacco stalk, and soil were tested to confirm their heavy metal content. The World...

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Main Authors: Palisoc, Shirley T., Valeza, Nadia Christabel C., Natividad, Michelle T.
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Published: Animo Repository 2017
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Online Access:https://animorepository.dlsu.edu.ph/faculty_research/1751
https://animorepository.dlsu.edu.ph/cgi/viewcontent.cgi?article=2750&amp;context=faculty_research
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spelling oai:animorepository.dlsu.edu.ph:faculty_research-27502021-07-21T02:24:59Z Fabrication of an effective gold nanoparticle/graphene/Nafion® modified glassy carbon electrode for high sensitive detection of trace Cd<sup>2+</sup>, Pb<sup>2+</sup> and Cu<sup>2+</sup> in tobacco and tobacco products Palisoc, Shirley T. Valeza, Nadia Christabel C. Natividad, Michelle T. The heavy metal contamination in tobacco (nicotania tabacum) and tobacco products was investigated in this study. Samples of commercially available cigarettes and traditional Philippine cigars, dried tobacco leaves, tobacco stalk, and soil were tested to confirm their heavy metal content. The World Health Organization (WHO) limits for Cd2+, Pb2+, and Cu2+ are 3 ppb, 10 ppb and 2 ppm, respectively. All the cigarette brands and variants in this study are all way above the WHO's toxicity limits for the aforementioned heavy metals. Henceforth, all the cigarette variants in this study can be inferred to be dangerously toxic. The heavy metal detection was done with a glassy carbon electrode modified with gold nanoparticles (AuNP), graphene and Nafion® using the drop coating method. The modified electrodes were optimized by varying the concentration of graphene and AuNP and their effects were subsequently determined by the measurement of their analytical sensitivity, limits of detection, and limits of quantitation. Atomic absorption spectroscopy was performed to validate the concentrations of the heavy metals detected via anodic stripping voltammetry. The statistically insignificant difference between the concentrations detected through anodic stripping voltammetry and atomic absorption spectroscopy shows that the modified electrodes exhibited optimum detection properties. In addition, the transfer factors from soil to tobacco stalk, as well as, soil to tobacco leaf were also computed. © 2017 The Authors. 2017-05-01T07:00:00Z text application/pdf https://animorepository.dlsu.edu.ph/faculty_research/1751 https://animorepository.dlsu.edu.ph/cgi/viewcontent.cgi?article=2750&amp;context=faculty_research Faculty Research Work Animo Repository Tobacco—Heavy metal content Cigarettes Graphene Nanoparticles Anodic stripping voltammetry
institution De La Salle University
building De La Salle University Library
continent Asia
country Philippines
Philippines
content_provider De La Salle University Library
collection DLSU Institutional Repository
topic Tobacco—Heavy metal content
Cigarettes
Graphene
Nanoparticles
Anodic stripping voltammetry
spellingShingle Tobacco—Heavy metal content
Cigarettes
Graphene
Nanoparticles
Anodic stripping voltammetry
Palisoc, Shirley T.
Valeza, Nadia Christabel C.
Natividad, Michelle T.
Fabrication of an effective gold nanoparticle/graphene/Nafion® modified glassy carbon electrode for high sensitive detection of trace Cd<sup>2+</sup>, Pb<sup>2+</sup> and Cu<sup>2+</sup> in tobacco and tobacco products
description The heavy metal contamination in tobacco (nicotania tabacum) and tobacco products was investigated in this study. Samples of commercially available cigarettes and traditional Philippine cigars, dried tobacco leaves, tobacco stalk, and soil were tested to confirm their heavy metal content. The World Health Organization (WHO) limits for Cd2+, Pb2+, and Cu2+ are 3 ppb, 10 ppb and 2 ppm, respectively. All the cigarette brands and variants in this study are all way above the WHO's toxicity limits for the aforementioned heavy metals. Henceforth, all the cigarette variants in this study can be inferred to be dangerously toxic. The heavy metal detection was done with a glassy carbon electrode modified with gold nanoparticles (AuNP), graphene and Nafion® using the drop coating method. The modified electrodes were optimized by varying the concentration of graphene and AuNP and their effects were subsequently determined by the measurement of their analytical sensitivity, limits of detection, and limits of quantitation. Atomic absorption spectroscopy was performed to validate the concentrations of the heavy metals detected via anodic stripping voltammetry. The statistically insignificant difference between the concentrations detected through anodic stripping voltammetry and atomic absorption spectroscopy shows that the modified electrodes exhibited optimum detection properties. In addition, the transfer factors from soil to tobacco stalk, as well as, soil to tobacco leaf were also computed. © 2017 The Authors.
format text
author Palisoc, Shirley T.
Valeza, Nadia Christabel C.
Natividad, Michelle T.
author_facet Palisoc, Shirley T.
Valeza, Nadia Christabel C.
Natividad, Michelle T.
author_sort Palisoc, Shirley T.
title Fabrication of an effective gold nanoparticle/graphene/Nafion® modified glassy carbon electrode for high sensitive detection of trace Cd<sup>2+</sup>, Pb<sup>2+</sup> and Cu<sup>2+</sup> in tobacco and tobacco products
title_short Fabrication of an effective gold nanoparticle/graphene/Nafion® modified glassy carbon electrode for high sensitive detection of trace Cd<sup>2+</sup>, Pb<sup>2+</sup> and Cu<sup>2+</sup> in tobacco and tobacco products
title_full Fabrication of an effective gold nanoparticle/graphene/Nafion® modified glassy carbon electrode for high sensitive detection of trace Cd<sup>2+</sup>, Pb<sup>2+</sup> and Cu<sup>2+</sup> in tobacco and tobacco products
title_fullStr Fabrication of an effective gold nanoparticle/graphene/Nafion® modified glassy carbon electrode for high sensitive detection of trace Cd<sup>2+</sup>, Pb<sup>2+</sup> and Cu<sup>2+</sup> in tobacco and tobacco products
title_full_unstemmed Fabrication of an effective gold nanoparticle/graphene/Nafion® modified glassy carbon electrode for high sensitive detection of trace Cd<sup>2+</sup>, Pb<sup>2+</sup> and Cu<sup>2+</sup> in tobacco and tobacco products
title_sort fabrication of an effective gold nanoparticle/graphene/nafion® modified glassy carbon electrode for high sensitive detection of trace cd<sup>2+</sup>, pb<sup>2+</sup> and cu<sup>2+</sup> in tobacco and tobacco products
publisher Animo Repository
publishDate 2017
url https://animorepository.dlsu.edu.ph/faculty_research/1751
https://animorepository.dlsu.edu.ph/cgi/viewcontent.cgi?article=2750&amp;context=faculty_research
_version_ 1707058881050443776