Banaz Omer Ahmad1, Kamal M. Mahmoud2. Determination of Caffeine and Few Metals in Halabja Tea and Comparing with Various Tea Samples in Erbil Markets. J. K. Chem. Sci. [Internet]. 2023 Aug. 28 [cited 2026 Jul. 13];2(9):128-42. Available from: https://journal.uokufa.edu.iq/index.php/jkcs/article/view/13291