Analisa Kadar Sulfur Dioksida (SO2) di Udara Ambien dengan Metode Pararosanilin Menggunakan Spektrofotometer UV-Visible

Abstract

The analysis of the levels of sulfur dioxide (SO2) in ambient air has been carried out at the Dinas Lingkungan Hidup dan Kehutanan Provinsi Sumatera Utara. The sulfur dioxide (SO2) content of the ambient air was carried out using the pararosanilin method and then the absorbance was measured using a UV-Visible Spectrophotometer at a wavelength of 550 nm, a concentration of 33.1938 μg/m3 was obtained, for sample 2023/UA/02/36 a concentration of 38.0301 μg/m3 was obtained and for sample 2023/UA/02/37 a concentration of 35.2157 μg/m3 was obtained. Based on Government Regulation of the Republic of Indonesia No. 22 of 2021 concerning Implementation of Environmental Protection and Management, the maximum level of sulfur dioxide (SO2) in ambient air for 1 hour is 150 μg/m3. The results of the analysis show that the analyzed ambient air samples meet the national ambient air quality standards.