Fengchang Wu's research while affiliated with Chinese Research Academy of Environmental Sciences and other places

... The continuous introduction of antibiotics into the environment by livestock farming, agriculture, and wastewater discharge raises severe environmental and public health concern [1][2][3]. Antibiotics, as typical emerging contaminants, are often incompletely degraded, which can be harmful to living organisms [4]. The long-term accumulation of antibiotic residues accelerates the propagation and transfer of antibiotic-resistant genes and antibiotic-resistant bacteria [5,6]. ...

... A series of advanced technologies, such as ultraviolet-visible spectroscopy (UV-Vis), Fourier infrared spectroscopy (FTIR), and fluorescence excitation-emission matrix (EEM) spectroscopy [21][22][23], were developed to characterize the complexation properties of DOM. In recent decades, parallel factor analysis (PARAFAC) has become a popular tool used to identify different independent groups of fluorescent components from overlapping fluorophores among the various compounds in EEM spectra [24][25][26]. This technique, combined with fluorescence quenching titration (the decrease in fluorescence due to an addition of metal), can provide more detailed information on complex binding characteristics [12,27]. ...

... Ecological risk assessment has received increasing attention in recent years, the most important of which is the determination of ecotoxicity thresholds, i.e., the maximum concentration at which ecosystems are protected is regarded as an important endpoint for evaluating ecological risk . The JPCs method were utilized to assess the ecological risk of PAEs to aquatic organisms in Chinese major water bodies (Hong et al., 2024). JPCs for each PAEs were derived to show the probability of exceedance effects of different magnitudes, combining the dispersion of PAEs levels in surface waters in China (Fig. 2) and the chronic toxic effects of PAEs on various aquatic lives (Table S1). ...

... Fungi are a large group, and their filamentous structure promotes the secretion of extracellular enzymes that can enable them to be better adapted to different environments for polymer degradation, such as dissolved organics [43,44]. Fungi seem to degrade polyethylene at a higher rate compared to bacteria [45]. ...

... By contrast, allochthonous DOM is the major component of DOM in aquatic ecosystems and is usually comprised of recalcitrant compounds transported from terrestrial ecosystems by surface runoff, streams and shallow groundwater (Gao et al., 2015). In natural aquatic environment, the abundance of allochthonous organic matter, including even the progressively more prevalent dissolved black carbon and microplastic-DOM (Li et al., 2024;Song et al., 2023;Sun et al., 2023;Yamashita et al., 2021), usually increase the molecular diversity in DOM (Hong et al., 2023), which in turn may influence DOM microbial and photo-transformation (Hu et al., 2023;Milstead et al., 2023). Phototransformation, in particular, can further feedback to alter the molecular composition of DOM and thus its microbial availability (Cory et al., 2014), thereby influencing if DOM is ultimately a carbon source or sink (Dempsey et al., 2020). ...

... Larger variation and lower recovery in the measured concentrations of ANT may be attributed to the volatility and biological activities (Mackay et al. 1997 . Generally, the solubility in the water and dissolved fraction of PAHs are considered for their toxicity evaluation presuming that only the dissolved part is bioavailable (Shi et al. 2024). In contrast, the suspended fraction is also bioavailable through adsorption and ingestion. ...