The Flame Atomic Absorption Spectrometry (F-AAS) and Flame Atomic Emission Spectrometry (F-AES) are

Current Polish Standard methods for the determination of sodium, potassium, magnesium, and calcium in natural fresh water were compared with other official standards, mostly from the U.S. (ASTM, USEPA, USGS), regarding recommended top concentrations of measured elements in measured solutions and meth-ods of regulating the sensitivity of measurements. Some of the disadvantageous limitations of conditions and methods of performing the spectrometric measurements that exist in Polish Standards were shown