170327 20260410165451.0 doi 10.1039/d5ja00455a sideral 148810 ART-2026-148810 eng Abad-Alvaro, Isabel Universidad de Zaragoza (orcid)0000-0002-7931-3901 Polyvinyl chloride microplastic detection by single particle inductively coupled plasma mass spectrometry for the characterization of model microplastics 2026 Methodology based on the use of single particle inductively coupled plasma mass spectrometry (SP-ICPMS) for the detection and quantification of polyvinyl chloride (PVC) micro/nanoplastics was developed. The use of chlorine as an intrinsic element present in the composition of the polymer improved the performance of SP-ICP-MS reported in the literature, allowing the detection of PVC particles down to 0.35 mm, by monitoring the 35Cl isotope using a quadrupole-based instrument. A top-down protocol for preparation of microplastic suspensions based on cryogenic grinding of the raw plastic material in combination with fractionation by centrifugation was proposed, to be used as a model material in risk assessment studies. The model suspensions were characterized by SP-ICP-MS and dynamic image analysis (DIA). The size of the PVC particles was in the range of 0.4–5.7 mm, with a median equivalent diameter of 1.0 mm, whereas the concentration of the suspensions was in the range of 109 L−1 , both determined by SP-ICP-MS. The particles showed an irregular shape confirmed by DIA, with a mean aspect ratio of 0.67 and circularity of 0.79. The SP-ICP-MS method developed was also applied as a proof of concept to the screening of PVC microplastics released from industrial products. Access copy available to the general public Unrestricted info:eu-repo/grantAgreement/ES/DGA/E29-23R info:eu-repo/grantAgreement/ES/MICINN/PID2021-123203OB-I00 info:eu-repo/grantAgreement/ES/NextGenerationEU/MZ-240621 info:eu-repo/semantics/openAccess by-nc https://creativecommons.org/licenses/by-nc/4.0/deed.es info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Lázaro-Fernández, Inés Bolea, Eduardo Universidad de Zaragoza (orcid)0000-0002-1856-2058 Laborda, Francisco Universidad de Zaragoza (orcid)0000-0002-4169-0357 2009 750 Universidad de Zaragoza Dpto. Química Analítica Área Química Analítica (2026), [9 pp.] J. anal. at. spectrom. Journal of Analytical Atomic Spectrometry 0267-9477 804981 http://zaguan.unizar.es/record/170327/files/texto_completo.pdf Versión publicada 2762576 http://zaguan.unizar.es/record/170327/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:170327 articulos driver 2026-04-10-13:46:38 ARTICLE