In this study, five quantitative structure–property relationship (QSPR) models were developed for predicting the microplastic/water partition coefficients (log Kd) of organics between polyethylene/seawater, polyethylene/freshwater, polyethylene/pure water, polypropylene/seawater, and polystyrene/seawater. All the QSPR models show good fitting ability (R2 = 0.811–0.939), predictive ability (Q2ext = 0.835–0.910, RMSEext = 0.369–0.752), and robustness (Qcv2 = 0.882–0.957). They can be used to predict the Kd values of organic pollutants (such as polychlorinated biphenyls, chlorobenzene, polycyclic aromatic hydrocarbons, antibiotics perfluorinated compounds, etc.) under different pH conditions. The hydrophobic interaction has been indicated as an important mechanism for the adsorption of organic pollutants to microplastics. In sea waters, the role of hydrogen bond interaction in adsorption is considerable. For polystyrene, π–π interaction contributes to the partitioning. The developed models can be used to quickly estimate the adsorption capacity of organic pollutants on microplastics in different types of water, providing necessary information for ecological risk studies of microplastics.
The paper studies the microplastic abundances and characteristics in the Southern Jiangsu Canal to reveal the effect of riverside cities on microplastics in river water. The results show that the microplastic abundance in the water body of the South Jiangsu Canal ranges from 3.41 to 19.07 particles L−1, with an average of 9.59 ± 3.95[…]
This paper reveals the status of microplastic pollution in paddy soil with long-term mulching. The study investigates the distribution and weathering characteristics of filmy microplastics in a mulched paddy field (non-mulched, four years of mulched, and ten years of continuous mulched soil were investigated) in Southwest China. The filmy microplastics accumulated annually in the plough[…]
The paper reviews advancements in polymer technologies that aim to improve the efficiency of recycling and upcycling plastic waste. Increasing the rate of recycling and upcycling is critical for addressing the issues caused by plastic pollution, and, at the same time, overcoming the technical limitations on the same. The research emphasises the need to develop[…]
The study analyses the current advancements in the behavioural differences between MPs and NPs in urban waters. Analytical challenges, fate, interactions with surrounding pollutants, and eco-impacts of MPs and NPs are similarly discussed in this paper. It has been highlighted in the study that the characterization and fate studies of NPs are more challenging as[…]
The study investigates scientifically evidence-based policy initiatives for targeting plastic pollution. The issue of plastic pollution is complex and still related to several uncertainties, which implies that policy initiatives must allow for flexibility and ongoing evaluations to adjust to the evolving knowledge generation. It is also important that the scientific community provide the needed research[…]