fig4

Figure 4. Nanoplastics disturb nitrogen removal in constructed wetlands: responses of microbes and macrophytes. This figure is quoted with permission from Yang et al. 2020^[12] Copyright © 2019 American Chemical Society. MDA: ​Malonaldehyde; SOD:​ superoxide dismutase; POD​: peroxidase; CAT​: catalase; PS:​ polystyrene; AMO: ​ammonia mono-oxygenase; NAR: ​nitrate reductase; NIR: ​nitrite reductase.