Nasiru, Idris MeduguAbba, A.H.Rafiu, O.Y.Dodo, Y.A.2023-12-142023-12-142012-04-01Abba A. H., Rashid M., Hasfalina C.M., Noor Z.Z. and Whei T.W. (2010): Quantification of Chlorine and Hydrogen chloride in Air Using Chemically Treated Filter, The IUP Journal of Environmental Sciences, Vol. IV No 4 Air Resource Board, (1990), Method 434: Determination of Chlorine in Unheated Air, California: Air Resources Board American Chemical Society (1978), Cleaning Our Environment, A chemical Perspective, Washington D.C, American Chemical Societyhttps://keffi.nsuk.edu.ng/handle/20.500.14448/4742Chlorine is one of the pollutants released during solid waste treatment, chemical process or chemical reaction in some laboratory activities. Ailments of various effects ranging from pollutions caused to the environment, human health and services are some of those recent challenges reported to be caused by the gas. Exposure can cause ailments to skin, eyes and the respiratory tract. In this study, a modified quantification method of chlorine, (Cl2) in indoor air was demonstrated. The acid gas is detected using an "Improved Filtration Process" in which treated filters replaced impingers initially utilized by conventional pollutant gases quantifiers. Experiments were conducted and assessments were based on an indoor air contents. Results indicate the ability of the new method to assess some quantity of chlorine gas within the vicinity. Suitability of the methods were also reviewed and assessed. Based on the results obtained, the improved method was found to be effective and relevant.eschlorine gas, micro-fibre filter, sampling time, indoor air, filtration process.AN ENVIRONMENTALLY SUSTAINABLE TECHNIQUE OF ASSESSING CHLORINE IN THE AIRArticle