Optimized high-throughput sampling methodology based on ASTM D8332

This resource describes a validated, high-throughput microplastics sampling methodology based on ASTM D8332, developed to support consistent, efficient, and scalable collection of environmental microplastics data. The method was designed to address common challenges in microplastics monitoring programs, including variability in field sampling practices, limited throughput, and difficulties aligning samples with downstream analytical techniques such as FTIR and Raman spectroscopy.

The approach has been applied and evaluated through applied research, field trials, and method demonstrations, with emphasis on improving reproducibility across environmental matrices while remaining compatible with standardized laboratory workflows. By building directly on ASTM D8332, the methodology supports harmonization of microplastics sampling protocols across research, monitoring, and regulatory applications.

The full protocol and validation are now formally published:

Wong et al. (2024). Optimized high-throughput sampling methodology for microplastics based on ASTM D8332. MethodsX.
https://www.sciencedirect.com/science/article/pii/S2215016124001341

Additional supporting materials provide practical context and real-world implementation guidance:

• Plastics in Action – Program Overview and Applied Research Context
  https://www.nait.ca/applied-research/our-work-and-impact/plastics-research-in-action
• Field Sampling Demonstration Video
  https://youtu.be/JyOabOKCsB8
• Conference Presentation – Method Development and Applications
  https://youtu.be/KqrZwpJ0fYA

Taken together, these resources offer a comprehensive reference for implementing ASTM-aligned, high-throughput microplastics sampling, supporting improved data comparability, methodological transparency, and scalability across environmental monitoring programs and studies.