Browsing by Author "Quintero Zorrilla, Valentina"
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Item Review: Evaluación de NIRS como método de identificación eficiente de microplásticos(Universidad Santiago de Cali, 2025-11-18) Quintero Zorrilla, Valentina; Ríos Acevedo, Jhon Jairo (Director)Growing concern about microplastic contamination has driven the search for reliable analytical methods capable of identifying and quantifying these particles in environmental and biological matrices. Faced with this challenge, near-infrared spectroscopy (NIRS) and its hyperspectral modality (NIR-HSI) have emerged as emerging rapid, nondestructive, and relatively low-cost screening techniques, giving them operational advantages over established methodologies such as FTIR, Raman, and Py-GC/MS. This research, developed using a qualitative approach and following the PRISMA systematic review guidelines, critically analyzed the efficiency, limitations, and projections of NIRS in the identification of microplastics. The review covered scientific literature published between 2010 and 2025, with an emphasis on validated experimental studies in environmental matrices (water, soil, air, sediments, and biota), as well as in industrial and recycling applications. The findings indicate that NIRS achieves identification rates above 90% for common polymers such as PE, PP, PET, PS, and PVC, especially for particles larger than 100 µm, highlighting its potential for mass monitoring and in situ applications. However, the technique has significant limitations: lower sensitivity for small particles or nanoplastics, interferences generated by water, biofilms, and mineral fillers, and the lack of standardized protocols and representative spectral libraries of degraded polymers. These restrictions limit its adoption as a single reference method but reinforce its value as a complementary tool within integrated workflows.