Analisa Amonia pada Air Limbah dengan Metode Spektrofotometri di Balai Laboratorium Kesehatan Masyarakat (BLKM) Medan

Abstract

Domestic wastewater is wastewater that comes from human daily life activities related to water use. Domestic liquid waste has physical, chemical, and biological characteristics. Physical characteristics include odor, color, Total Suspended Solid (TSS), and turbidity. Chemical characteristics include Chemical Oxygen Demand (COD), Biological Oxygen Demand (BOD), pH (acidity level), Biological characteristics include bacteria and microorganisms. One of the parameters of water pollution is ammonia (NH3). Ammonia is an inorganic compound that can disrupt aquatic ecosystems and other living things. In humans, ammonia is toxic if it enters the body exceeds the amount that can be detoxified by the body. Determination of ammonia levels in domestic wastewater is very important to ensure quality and safety according to the PERMENLHK No. 68 of 2016 standards, which is 10 mg / L. In this study, ammonia analysis was carried out using the UV-Vis spectrophotometry method with a wavelength of 340nm. From the results of the analysis, the ammonia levels in domestic wastewater samples were 4,387 mg/L, 0.014 mg/L, 5,818 mg/L, 5,708 mg/L, 5,271 mg/L, 5,474 mg/L, 3,017 mg/L, 5,011 mg/L, 4,727 mg/L, 4,208 mg/L, 2,951 mg/L, 5,757 mg/L, 2,865 mg/L, 3,227 mg/L, 2,850 mg/L. These results indicate that the levels of Ammonia in domestic wastewater still meet the requirements of Permenlhk No.68 of 2016 concerning Domestic Wastewater Quality Standards.