Analysis of heavy metals in pharmaceutically active compounds with AAS methods. Master’s thesis, 66 pages, 19 figures, 32 tables, 35 literature references, 7 additions. In Latvian. ELCTROTHERMAL ATOMIC ABSORPTION SPECTROMETRY, HEAVY METALLIC ELEMENT CONTAMINATION, ACTIVE PHARMACEUTICAL INGREDIENTS, INDUCTIVELY COUPLED PLASMA MASS SPECTROMETRY Toxicity of many heavy metallic elements has been explored in last century. Those elements are detected by quality test methods both EP, and USP. Possibility of quantitative detection is resolved and new analytical methods are formed with instrumental detection methods like ETAAS and ICP-MS.