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Preliminary Observation of Nanoplastic-Associated Optical Interaction Morphology in Unprocessed Human Urine Samples Using the EcoExposure™ Platform

Original title: Preliminary Observation of Nanoplastic-Associated Optical Interaction Morphology in Unprocessed Human Urine Samples Using the EcoExposure™ Platform

Zenodo (CERN European Organization for Nuclear Research) 2026
Melinda Chu

Summary

Scientists tested a new optical scanning tool to see if it could detect tiny plastic particles (nanoplastics) directly in human urine, without the usual complicated lab prep. In early tests, even old urine samples showed light patterns similar to what's seen when nanoplastics are in water—hinting that this tool might one day offer a faster, simpler way to check people's plastic exposure. That said, this is very preliminary work, so it's not yet a reliable test you'd see in a doctor's office.

Most laboratory methods for nanoplastic analysis in biological matrices rely on extensive preprocessing, including digestion, filtration, extraction, or hyperspiking. In contrast, the EcoExposure™ platform evaluates microplastic- and nanoparticle-associated optical interaction behavior directly in minimally processed liquid matrices using large-volume optical analysis. This technical note documents preliminary observations suggesting that recognizable nanoparticle-associated optical interaction morphology remains observable in aged decentralized human urine samples despite expected matrix complexity and biochemical changes. These aged samples represent an extreme stress test, as the assay is intended to be performed in real-time (within minutes to hours of collection) under normal use conditions. The nanoparticle patterns appear qualitatively consistent with prior experiments in filtered water and saltwater systems, supporting the possibility of transferable interaction-state dynamics across multiple matrices.

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