What the study found
The study reports that per- and polyfluoroalkyl substances, or PFAS, do not only exist as single molecules in the tested conditions but can also form nanoscale clusters with dissolved organic matter, or DOM. The authors say this nanocluster formation is linked to lower plant toxicity in rice seedlings.
Why the authors say this matters
The authors conclude that DOM-induced nanoclustering is a critical interface process for understanding the bioaccessibility and risks of PFAS. They suggest this offers a different perspective for environmental assessment and remediation of PFAS.
What the researchers tested
The researchers used a newly established set of in situ atomic force microscope, or AFM, techniques to visualize PFAS behavior at interfaces with naturally extracted DOM. They also probed intermolecular interactions and carried out plant exposure experiments in rice seedlings.
What worked and what didn't
The AFM observations showed dynamic formation of PFAS nanoclusters at the DOM interface. Strong binding forces between PFAS molecules and specific DOM functional groups were associated with numerous small nanoclusters, while weaker interactions were associated with larger, sparser clusters; the abstract reports a strong negative correlation between nanocluster size and abundance across PFAS structures.
What to keep in mind
The summary provided here is limited to the abstract, so details of experimental conditions, sample sizes, and broader environmental scope are not described. The phytotoxicity results are reported for rice seedlings, so the abstract does not state whether the same pattern was tested in other plants.
Key points
- PFAS were observed forming nanoclusters with naturally extracted dissolved organic matter.
- Strong PFAS-DOM interactions were linked to many small nanoclusters; weaker interactions to fewer larger ones.
- The abstract reports a strong negative correlation between nanocluster size and abundance across multiple PFAS structures.
- In rice seedlings, nanoclustered PFAS showed reduced uptake and lower phytotoxicity than molecularly dispersed PFAS.
- The authors describe DOM-induced nanoclustering as important for PFAS bioaccessibility and risk assessment.
Disclosure
- Research title:
- DOM forms PFAS nanoclusters that reduce plant uptake
- Authors:
- Xinfei Ge, Kun Wang, Xin Xiao, Chiheng Chu, Xiaoying Zhu, Baoliang Chen
- Institutions:
- Yangtze River Delta Physics Research Center (China), Yangtze River Delta Physics Research Center (China), Yangtze River Delta Physics Research Center (China), Zhejiang University, Zhejiang University, Zhejiang University, Zhejiang University, Zhejiang University, Zhejiang University
- Publication date:
- 2026-02-23
- OpenAlex record:
- View
Get the weekly research newsletter
Stay current with scholarly research without reading academic papers — one filtered digest, every Friday.