Figure 3. Standard curve (Concentration versus absorption) for blank i.e. after irradiation of UVC on 30ppm congo red solution at pH 8

From

Study of the Effect of Nickel Nano Particles and pH on the Photo-degradation of Congo Red

Kazi Mohammad Anamoul Haque

American Journal of Water Resources. 2021, 9(1), 8-14 doi:10.12691/ajwr-9-1-2