ICP-MS Determination of 23 Elements of Potential Health Concern in Liquids of e-Cigarettes. Method Development, Validation, and Application to 37 Real Samples

The lack of interest in the determination of toxic elements in liquids for electronic cigarettes (e-liquids) has so far been reflected in the scarce number of accurate and validated analytical methods devoted to this aim. Since the strong matrix effects observed for e-liquids constitute an exciting...

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Autores principales: Andrea Mara, Ilaria Langasco, Sara Deidda, Marco Caredda, Paola Meloni, Mario Deroma, Maria I. Pilo, Nadia Spano, Gavino Sanna
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Publicado: MDPI AG 2021
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spelling oai:doaj.org-article:7f6ca69f817546a68a6a13de439099482021-11-11T18:38:15ZICP-MS Determination of 23 Elements of Potential Health Concern in Liquids of e-Cigarettes. Method Development, Validation, and Application to 37 Real Samples10.3390/molecules262166801420-3049https://doaj.org/article/7f6ca69f817546a68a6a13de439099482021-11-01T00:00:00Zhttps://www.mdpi.com/1420-3049/26/21/6680https://doaj.org/toc/1420-3049The lack of interest in the determination of toxic elements in liquids for electronic cigarettes (e-liquids) has so far been reflected in the scarce number of accurate and validated analytical methods devoted to this aim. Since the strong matrix effects observed for e-liquids constitute an exciting analytical challenge, the main goal of this study was to develop and validate an ICP-MS method aimed to quantify 23 elements in 37 e-liquids of different flavors. Great attention has been paid to the critical phases of sample pre-treatment, as well as to the optimization of the ICP-MS conditions for each element and of the quantification. All samples exhibited a very low amount of the elements under investigation. Indeed, the sum of their average concentration was of ca. 0.6 mg kg<sup>−1</sup>. Toxic elements were always below a few tens of a μg per kg<sup>−1</sup> and, very often, their amount was below the relevant quantification limits. Tobacco and tonic flavors showed the highest and the lowest concentration of elements, respectively. The most abundant elements came frequently from propylene glycol and vegetal glycerin, as confirmed by PCA. A proper choice of these substances could further decrease the elemental concentration in e-liquids, which are probably barely involved as potential sources of toxic elements inhaled by vapers.Andrea MaraIlaria LangascoSara DeiddaMarco CareddaPaola MeloniMario DeromaMaria I. PiloNadia SpanoGavino SannaMDPI AGarticlee-cigarettese-liquidstoxic elementstrace elementsICP-MSOrganic chemistryQD241-441ENMolecules, Vol 26, Iss 6680, p 6680 (2021)
institution DOAJ
collection DOAJ
language EN
topic e-cigarettes
e-liquids
toxic elements
trace elements
ICP-MS
Organic chemistry
QD241-441
spellingShingle e-cigarettes
e-liquids
toxic elements
trace elements
ICP-MS
Organic chemistry
QD241-441
Andrea Mara
Ilaria Langasco
Sara Deidda
Marco Caredda
Paola Meloni
Mario Deroma
Maria I. Pilo
Nadia Spano
Gavino Sanna
ICP-MS Determination of 23 Elements of Potential Health Concern in Liquids of e-Cigarettes. Method Development, Validation, and Application to 37 Real Samples
description The lack of interest in the determination of toxic elements in liquids for electronic cigarettes (e-liquids) has so far been reflected in the scarce number of accurate and validated analytical methods devoted to this aim. Since the strong matrix effects observed for e-liquids constitute an exciting analytical challenge, the main goal of this study was to develop and validate an ICP-MS method aimed to quantify 23 elements in 37 e-liquids of different flavors. Great attention has been paid to the critical phases of sample pre-treatment, as well as to the optimization of the ICP-MS conditions for each element and of the quantification. All samples exhibited a very low amount of the elements under investigation. Indeed, the sum of their average concentration was of ca. 0.6 mg kg<sup>−1</sup>. Toxic elements were always below a few tens of a μg per kg<sup>−1</sup> and, very often, their amount was below the relevant quantification limits. Tobacco and tonic flavors showed the highest and the lowest concentration of elements, respectively. The most abundant elements came frequently from propylene glycol and vegetal glycerin, as confirmed by PCA. A proper choice of these substances could further decrease the elemental concentration in e-liquids, which are probably barely involved as potential sources of toxic elements inhaled by vapers.
format article
author Andrea Mara
Ilaria Langasco
Sara Deidda
Marco Caredda
Paola Meloni
Mario Deroma
Maria I. Pilo
Nadia Spano
Gavino Sanna
author_facet Andrea Mara
Ilaria Langasco
Sara Deidda
Marco Caredda
Paola Meloni
Mario Deroma
Maria I. Pilo
Nadia Spano
Gavino Sanna
author_sort Andrea Mara
title ICP-MS Determination of 23 Elements of Potential Health Concern in Liquids of e-Cigarettes. Method Development, Validation, and Application to 37 Real Samples
title_short ICP-MS Determination of 23 Elements of Potential Health Concern in Liquids of e-Cigarettes. Method Development, Validation, and Application to 37 Real Samples
title_full ICP-MS Determination of 23 Elements of Potential Health Concern in Liquids of e-Cigarettes. Method Development, Validation, and Application to 37 Real Samples
title_fullStr ICP-MS Determination of 23 Elements of Potential Health Concern in Liquids of e-Cigarettes. Method Development, Validation, and Application to 37 Real Samples
title_full_unstemmed ICP-MS Determination of 23 Elements of Potential Health Concern in Liquids of e-Cigarettes. Method Development, Validation, and Application to 37 Real Samples
title_sort icp-ms determination of 23 elements of potential health concern in liquids of e-cigarettes. method development, validation, and application to 37 real samples
publisher MDPI AG
publishDate 2021
url https://doaj.org/article/7f6ca69f817546a68a6a13de43909948
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