{"id":2608,"date":"2020-08-26T08:58:57","date_gmt":"2020-08-26T06:58:57","guid":{"rendered":"https:\/\/afrodita.i3a.es\/?page_id=2608"},"modified":"2022-07-04T13:22:32","modified_gmt":"2022-07-04T11:22:32","slug":"publications","status":"publish","type":"page","link":"https:\/\/marte.i3a.es\/es\/publications\/","title":{"rendered":"Publicaciones"},"content":{"rendered":"
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      110 registros<\/span> «<\/a> ‹<\/a> 1 de 6 ›<\/a> »<\/a> <\/div><\/div>

      2025<\/h3>

      Art\u00edculos de revista<\/h3>

      Rua-Ibarz, Ana; Nakadi, Fl\u00e1vio V.; Bolea-Fernandez, Eduardo; Bazo, Antonio; Battistella, Beatrice; Matiushkina, Anna; Resch-Genger, Ute; Abad, Carlos; Resano, Mart\u00edn<\/p>

      Discrete Entity Analysis via Microwave-Induced Nitrogen Plasma\u2013Mass Spectrometry in Single-Event Mode<\/a> Art\u00edculo de revista<\/span> <\/p>

      En: <\/span>Analytical Chemistry, <\/span>vol. 0, <\/span>no 0, <\/span>pp. null, <\/span>2025<\/span>, (PMID: 41084806)<\/span>.<\/p>

      Resumen<\/a><\/span> | Enlaces<\/a><\/span> | BibTeX<\/a><\/span><\/p>

      @article{,
      \r\ntitle = {Discrete Entity Analysis via Microwave-Induced Nitrogen Plasma\u2013Mass Spectrometry in Single-Event Mode},
      \r\nauthor = {Ana Rua-Ibarz and Fl\u00e1vio V. Nakadi and Eduardo Bolea-Fernandez and Antonio Bazo and Beatrice Battistella and Anna Matiushkina and Ute Resch-Genger and Carlos Abad and Mart\u00edn Resano},
      \r\nurl = {https:\/\/doi.org\/10.1021\/acs.analchem.5c04341},
      \r\ndoi = {10.1021\/acs.analchem.5c04341},
      \r\nyear  = {2025},
      \r\ndate = {2025-10-14},
      \r\nurldate = {2025-10-14},
      \r\njournal = {Analytical Chemistry},
      \r\nvolume = {0},
      \r\nnumber = {0},
      \r\npages = {null},
      \r\nabstract = {In this work, single-event microwave-induced nitrogen plasma\u2013mass spectrometry (single-event MINP-MS) was evaluated for the first time for the analysis of discrete entities such as nanoparticles, biological cells, and microplastics. Nitrogen (N2) effectively overcomes Ar-based polyatomic interferences, enabling (ultra)trace element determination of Fe and Se using their most abundant isotopes, 56Fe (91.66%) and 80Se (49.82%). Iron oxide nanoparticles (Fe2O3 NPs) ranging from 20 to 70 nm were accurately characterized, with excellent agreement with established sizing techniques, such as transmission electron microscopy (TEM) and dynamic light scattering (DLS). A limit of detection (LoD) of 8.6 ag for Fe\u2500equivalent to an LoDsize of 19 nm for Fe2O3\u2500was achieved, which is significantly lower than recent values reported for high-end quadrupole-based ICP-MS. Selenium nanoparticles (SeNPs) of 150 and 250 nm were also accurately characterized, without the N2-based plasma experiencing issues handling relatively large metallic NPs (linearity, R2 = 0.9994). Se-enriched yeast cells (SELM-1 certified reference material) were successfully analyzed via single-cell MINP-MS using external calibration based on SeNPs and a transport efficiency-independent approach. In addition, 2\u20133 \u03bcm polystyrene (PS) and polytetrafluoroethylene (PTFE) were accurately sized by monitoring 12C+, confirming the method\u2019s suitability for handling micrometer-sized polymeric materials (microplastics). The average duration of individual events (680 \u00b1 160 \u03bcs) suggests that the digestion of individual entities in N2-based plasmas is comparable to that in Ar-based plasmas. These results open new avenues for this instrumentation as an alternative to ICP ionization sources, also in the context of discrete entity analysis.},
      \r\nnote = {PMID: 41084806},
      \r\nkeywords = {},
      \r\npubstate = {published},
      \r\ntppubtype = {article}
      \r\n}
      \r\n<\/pre><\/div>
      Cerrar<\/a><\/p><\/div>
      In this work, single-event microwave-induced nitrogen plasma\u2013mass spectrometry (single-event MINP-MS) was evaluated for the first time for the analysis of discrete entities such as nanoparticles, biological cells, and microplastics. Nitrogen (N2) effectively overcomes Ar-based polyatomic interferences, enabling (ultra)trace element determination of Fe and Se using their most abundant isotopes, 56Fe (91.66%) and 80Se (49.82%). Iron oxide nanoparticles (Fe2O3 NPs) ranging from 20 to 70 nm were accurately characterized, with excellent agreement with established sizing techniques, such as transmission electron microscopy (TEM) and dynamic light scattering (DLS). A limit of detection (LoD) of 8.6 ag for Fe\u2500equivalent to an LoDsize of 19 nm for Fe2O3\u2500was achieved, which is significantly lower than recent values reported for high-end quadrupole-based ICP-MS. Selenium nanoparticles (SeNPs) of 150 and 250 nm were also accurately characterized, without the N2-based plasma experiencing issues handling relatively large metallic NPs (linearity, R2 = 0.9994). Se-enriched yeast cells (SELM-1 certified reference material) were successfully analyzed via single-cell MINP-MS using external calibration based on SeNPs and a transport efficiency-independent approach. In addition, 2\u20133 \u03bcm polystyrene (PS) and polytetrafluoroethylene (PTFE) were accurately sized by monitoring 12C+, confirming the method\u2019s suitability for handling micrometer-sized polymeric materials (microplastics). The average duration of individual events (680 \u00b1 160 \u03bcs) suggests that the digestion of individual entities in N2-based plasmas is comparable to that in Ar-based plasmas. These results open new avenues for this instrumentation as an alternative to ICP ionization sources, also in the context of discrete entity analysis.<\/div>
      Cerrar<\/a><\/p><\/div>