ArticleFrontiers in chemistry2026
Integrating multi-isotope calibration and infrared-assisted digestion for robust and sustainable multielemental determination in agroalimentary matrices by ICP-MS.
Article in Frontiers in chemistry, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Multi-isotope calibration (MICal) was evaluated as an alternative quantitative strategy for multi-elemental determination by inductively coupled plasma mass spectrometry (ICP-MS) in complex agroalimentary matrices. Infrared-assisted digestion (IRAD) was employed as a rapid and acid-efficient sample preparation approach. Method performance was assessed using certified reference material and further demonstrated through the analysis of real samples, including compound feeds and animal-derived matrices. MICal showed well-defined linear behavior based on paired digest + standard and digest + blank solutions, enabling intrinsic matrix matching and the identification of isotope-specific spectral and matrix-related interferences. Accurate and precise quantification was achieved for all selected isotopes, with recoveries ranging from 85% to 118% and relative standard deviations (RSD) below 5%. Limits of quantification (LOQ) were suitable for both nutritional assessment and contaminant monitoring, ranging from 0.02 mg kg
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