2024-08-27 カナダ・ブリティッシュコロンビア大学(UBC)
＜関連情報＞
- https://news.ubc.ca/2024/08/new-ubc-tool-detects-microplastics/
- https://pubs.acs.org/doi/10.1021/acssensors.4c00957
マイクロ/ナノプラスチックの迅速かつ高感度な測定のための費用対効果の高いワイヤレス携帯デバイス Cost-Effective and Wireless Portable Device for Rapid and Sensitive Quantification of Micro/Nanoplastics
Haoxin Ye,Xinzhe Zheng,Haoming Yang,Matthew D. Kowal,Teresa M. Seifried,Gurvendra Pal Singh,Krishna Aayush,Guang Gao,Edward Grant,David Kitts,Rickey Y. Yada,Tianxi Yang,,
ACS Sensors Published: August 12, 2024
DOI:https://doi.org/10.1021/acssensors.4c00957
Abstract
The accumulation of micro/nanoplastics (MNPs) in ecosystems poses tremendous environmental risks for terrestrial and aquatic organisms. Designing rapid, field-deployable, and sensitive devices for assessing the potential risks of MNPs pollution is critical. However, current techniques for MNPs detection have limited effectiveness. Here, we design a wireless portable device that allows rapid, sensitive, and on-site detection of MNPs, followed by remote data processing via machine learning algorithms for quantitative fluorescence imaging. We utilized a supramolecular labeling strategy, employing luminescent metal–phenolic networks composed of zirconium ions, tannic acid, and rhodamine B, to efficiently label various sizes of MNPs (e.g., 50 nm–10 μm). Results showed that our device can quantify MNPs as low as 330 microplastics and 3.08 × 106 nanoplastics in less than 20 min. We demonstrated the applicability of the device to real-world samples through determination of MNPs released from plastic cups after hot water and flow induction and nanoplastics in tap water. Moreover, the device is user-friendly and operative by untrained personnel to conduct data processing on the APP remotely. The analytical platform integrating quantitative imaging, customized data processing, decision tree model, and low-cost analysis ($0.015 per assay) has great potential for high-throughput screening of MNPs in agrifood and environmental systems.
