Determination of Iron (Fe) and Calcium (Ca) in NIST SRM 1566b (Oyster tissue) using Flame Atomic Absorption Spectrometry (F-AAS) by Standard Addition Method. Valensi [Internet]. 2011 May 1 [cited 2025 Oct. 28];2(2). Available from: https://journal.uinjkt.ac.id/valensi/article/view/205