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A critical review of sampling, extraction and analysis methods for tyre and road wear particles
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Researchers critically reviewed all available sampling, treatment, and analytical methods for tire and road wear particles (TRWPs) across water, air, road dust, and sediment matrices, identifying optimal approaches (SEM-EDX, 2D-GC-MS, LC-MS/MS) and proposing standardized research frameworks for TRWP characterization.
Tyre and road wear particles (TRWPs) have become an increasing contamination concern because of their extensive distribution in the environment. A comprehensive overview of the methods for sampling, treatment and analysis of environmental samples for TRWPs (and their benefits and limitations) is lacking. We evaluate and critically assess the sampling, treatment and analysis methods previously reported for water, air, road dust and sediment/soil samples. We suggest research frameworks for studying TRWPs in these media. Microscopy and thermal analysis techniques such as scanning electron microscopy (with energy dispersive X-ray analysis), environmental scanning electron microscopy, 2-dimensional gas chromatography mass spectrometry and liquid chromatography with tandem mass spectrometry in the case of complex samples, are optimal methods for determination of the number and mass of TRWPs. Issues for further investigation and analysis recommendations are provided.
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