Certainly, here are some key research gaps in the current field of MNPs research, such as insufficient environmental monitoring methods, limited study of natural MNPs, biological effectiveness of MNPs, and long-term effects and ecological consequences of MNPs.1
References
1Liu W, Liao H, Wei M, Junaid M, Chen G, Wang J. Biological uptake, distribution and toxicity of micro(nano)plastics in the aquatic biota: A special emphasis on size-dependent impacts. TrAC Trends in Analytical Chemistry. 170:117477. doi:10.1016/j.trac.2023.117477