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Abstract
Two analytical methods for the determination of Mn (II) in tap water are discussed. One employs differential pulse anodic stripping voltammetry with a sensitivity of (0.4–2.2) nA ng−1 cm3 and a detection limit of 0.3 μg dm−3. The other one is flame atomic absorption spectrometry with preconcentration on the selective chelating sorbent Spheron Oxin. The method is convenient for over 5 μg dm−3 (10−7 M) of Mn (II), and for less than 5 μg dm−3 with standard addition before sorption.