20.500.12556/RUL-175624 Laser-induced breakdown spectroscopy for direct analysis of pristine and environmentally aged microplastics a PCA-based approach This study investigates the potential of Laser-Induced Breakdown Spectroscopy (LIBS) combined with Principal Component Analysis (PCA) for the differentiation and characterization of microplastics (MPs) in various stages of environmental aging. Three commonly encountered polymer types, polystyrene, polyethylene, and polyvinyl chloride, in the form of fragments were subjected to controlled aging under abiotic and biotic conditions for one and six weeks in the absence and presence of selected heavy metal ions (cadmium, chromium, and lead) to simulate environmentally relevant contamination. The LIBS-PCA approach effectively distinguishes between pristine and aged MPs and among different polymer types and aging scenarios. Biotic aging led to pronounced elemental changes which were further supported by parallel chlorophyll a measurements assessing the biofilm development. These findings highlight the applicability of LIBS-PCA as a rapid and informative tool for monitoring microplastic transformation in complex environmental settings. microplastics biotic aging abiotic aging laser-induced breakdown spectroscopy mikroplastika biotsko staranje abiotsko staranje lasersko inducirana prebojna spektroskopija true false true Angleški jezik Slovenski jezik Članek v reviji 2025-11-06 10:39:03 2025-11-06 10:39:04 2025-12-13 03:52:25 0000-00-00 00:00:00 2026 0 0 10 str. Vol. 235, art. 107353 Jan. 2026 0000-00-00 Zaloznikova Objavljeno apc 0000-00-00 0000-00-00 0000-00-00 504.5:678:543.42 0584-8547 10.1016/j.sab.2025.107353 255659779 RAZ_Modlitbova_Pavlina_2026.pdf RAZ_Modlitbova_Pavlina_2026.pdf 1 7A28974DE444DD8B8AD2E76343483CA1 fef374d73cf06a07c6e7c428da9f2d1c726d99f004549ca7923dbf8a3cf8a51f 278ae9c1-baf8-11f0-9328-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=221455 https://www.sciencedirect.com/science/article/pii/S0584854725002381 1 1e5713ed-baf4-11f0-9328-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=221452 Fakulteta za kemijo in kemijsko tehnologijo 0 0 0