000152216 001__ 152216
000152216 005__ 20250401114419.0
000152216 0247_ $$2doi$$a10.1016/j.talanta.2025.127920
000152216 0248_ $$2sideral$$a143444
000152216 037__ $$aART-2025-143444
000152216 041__ $$aeng
000152216 100__ $$0(orcid)0000-0001-7087-9901$$aVenancio Nakadi, Flávio.$$uUniversidad de Zaragoza
000152216 245__ $$aLAMIS in the gas phase: A new approach for obtaining Ca elemental and isotopic information via CaF molecule formation
000152216 260__ $$c2025
000152216 5203_ $$aThis work introduces a novel method for generating the calcium monofluoride (CaF) diatomic molecule by adding the molecule-forming reagent in the gaseous phase (a methyl fluoride-argon mixture), in order to perform laser-induced breakdown spectroscopy (LIBS) and laser ablation molecular isotopic spectrometry (LAMIS) measurements. By optimizing the instrumental parameters, CaF molecule formation was successfully achieved within the plasma plume, upon ablation of dried liquid samples. The isotopic shift for the X2Σ→A2Π (0,1) CaF vibronic transition at 583.0 nm was calculated to be 292.3 pm. The method proved capable of providing quantitative information for determining calcium concentrations in real samples, such as tap water and skimmed milk, using internal standardization (with Sr as internal standard; limit of detection, LOD, 20 mg L−1) and isotope dilution (which can be applied from 400 mg L−1on), respectively. Partial least squares regression (PLS) analysis was employed to enhance the quality of the isotopic data.
The Ca concentration found in the tap water was 47 ± 16 mg L−1 (reference flame atomic absorption spectrometry, FAAS, value: 59 ± 0.2 mg L−1), and 1100 ± 140 mg L−1 for the skimmed milk (reference FAAS value: 1240 ± 120 mg L−1). No significant difference between LIBS and FAAS results could be established using a t-test at the 95% confidence level.
Overall, this novel approach allows for the determination of calcium in terms of both the elemental concentration and the isotopic composition, thus broadening the applicability of LIBS (e.g., for tracer experiments, besides the already mentioned application of isotope dilution).
000152216 536__ $$9info:eu-repo/grantAgreement/ES/DGA/E43-20R$$9info:eu-repo/grantAgreement/ES/DGA-FEDER/Construyendo Europa desde Aragón$$9info:eu-repo/grantAgreement/EC/H2020/101034288/EU/International Fellowship Programme for Talent Attraction to the Campus of International Excellence Campus Iberus/IberusExperience$$9This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No H2020 101034288-IberusExperience$$9info:eu-repo/grantAgreement/EUR/INTERREG-POCTEFANanolyme-EFA99-1$$9info:eu-repo/grantAgreement/ES/MICINN/PID2021-122455NB-I00$$9info:eu-repo/grantAgreement/ES/MICINN PRE2022-104710
000152216 540__ $$9info:eu-repo/semantics/closedAccess$$aby-nc-nd$$uhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
000152216 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/acceptedVersion
000152216 700__ $$aGarcia-Garcia, Alicia$$uUniversidad de Zaragoza
000152216 700__ $$0(orcid)0000-0001-9582-6283$$aRua-Ibarz, Ana$$uUniversidad de Zaragoza
000152216 700__ $$0(orcid)0000-0002-7450-8769$$aResano, Martín$$uUniversidad de Zaragoza
000152216 7102_ $$12009$$2750$$aUniversidad de Zaragoza$$bDpto. Química Analítica$$cÁrea Química Analítica
000152216 773__ $$g292 (2025), 127920 [9 pp.]$$pTalanta$$tTalanta$$x0039-9140
000152216 8564_ $$s4050244$$uhttps://zaguan.unizar.es/record/152216/files/texto_completo.pdf$$yPostprint$$zinfo:eu-repo/date/embargoEnd/2027-03-31
000152216 8564_ $$s2340921$$uhttps://zaguan.unizar.es/record/152216/files/texto_completo.jpg?subformat=icon$$xicon$$yPostprint$$zinfo:eu-repo/date/embargoEnd/2027-03-31
000152216 909CO $$ooai:zaguan.unizar.es:152216$$particulos$$pdriver
000152216 951__ $$a2025-04-01-11:02:57
000152216 980__ $$aARTICLE