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Multi-Site Validation Across the United States: Real-World Testing of a Portable Microplastic/Nanoplastic Water Assay

Zenodo (CERN European Organization for Nuclear Research) 2026

Summary

Researchers validated the EcoExposure portable optical assay for microplastics and nanoplastics across five geographically diverse U.S. cities and San Francisco Bay coastal water, confirming consistent detection performance across varying source-water types, ionic compositions, and treatment systems in real-world field conditions.

Study Type Environmental

The EcoExposure™ portable optical assay was evaluated across five geographically and hydrogeologically distinct U.S. locations: Cincinnati (OH), Milwaukee (WI), St. Louis (MO), Denver (CO), and San Francisco (CA). These sites represent a wide range of source-water types, municipal treatment systems, climates, elevations, and ionic compositions. In addition, separate validation was conducted in San Francisco Bay coastal saltwater. The assay produced clear, interpretable optical signatures in all tap-water and environmental freshwater matrices tested, demonstrating robustness across real-world conditions. These results provide strong empirical support for the platform’s suitability for distributed, decentralized deployment anywhere in the United States.

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