Exploring the boundaries in the analysis of large particles by single particle inductively coupled plasma mass spectrometry: application to nanoclays

Ojeda, D. ; Bolea, E. (Universidad de Zaragoza) ; Pérez-Arantegui, J. (Universidad de Zaragoza) ; Laborda, F. (Universidad de Zaragoza)

Resumen: The analysis of microparticles by single particle inductively coupled plasma mass spectrometry (SP-ICP-MS) requires sample introduction systems that guarantee transport efficiencies similar to those obtained with dissolved standards across the size range covered. The utilization of a nebulisation system based on a linear pass spray chamber and a micronebuliser is discussed and optimized for the introduction of large inorganic particles. Limitations caused by incomplete ionisation or the counting limit of detectors affecting particle size characterisation are also considered. The procedure developed has been applied to the characterisation of suspensions of a natural clay (kaolinite), with a thickness in the range of a few nanometers and lateral dimensions up to 1 mu m. The application of different sensitivity conditions by the modification of the ion transmission allowed us to cover the whole size range of the suspension monitoring the Al-27 isotope and achieve a quantitative mass recovery with respect to ICP-MS analysis. Finally, the migration of nanoclays (montmorillonite) from food containers and their detection by SP-ICP-MS are presented. The results have been compared to those obtained by TEM, showing that nanoclays migrated from the containers into water.

Idioma: Inglés

DOI: 10.1039/d2ja00026a

Año: 2022

Publicado en: Journal of Analytical Atomic Spectrometry 37, 7 (2022), 1501-1511
ISSN: 0267-9477

Factor impacto JCR: 3.4 (2022)

Categ. JCR: SPECTROSCOPY rank: 7 / 41 = 0.171 (2022) - Q1 - T1
Categ. JCR: CHEMISTRY, ANALYTICAL rank: 29 / 86 = 0.337 (2022) - Q2 - T2

Factor impacto CITESCORE: 6.4 - Chemistry (Q2)

Factor impacto SCIMAGO: 0.702 - Spectroscopy (Q2) - Analytical Chemistry (Q2)

Financiación: info:eu-repo/grantAgreement/ES/DGA/E29-17R
Financiación: info:eu-repo/grantAgreement/ES/MICINN/RTI2018-096111-B-100

Tipo y forma: Article (PostPrint)

Área (Departamento): Área Química Analítica (Dpto. Química Analítica)