Analysis of Chlorine Levels in Rice (Oryza sativa L.) Circulating in Several Markets in Medan City Using the UV-Vis Spectrophotometry Method. JPS [Internet]. 2026 Oct. 13 [cited 2026 Oct. 21];9(4):3227-36. Available from: https://journal-jps.com/new/index.php/jps/article/view/1872