Jiang, Fengcheng, et al. “Interference and Elimination of Fe3+ During Spectrophotometric Testing of Typical Pollutants in Coking Wastewater”. International Journal of Natural Resources and Environmental Studies, vol. 2, no. 2, Apr. 2024, pp. 63-69, https://doi.org/10.62051/ijnres.v2n2.07.