Determination of manganese in drinking water by anodic stripping voltammetry at a mercury film electrode

作者：Panascikaite Erika; Armalis Saulius^*

来源：Chemija, 2011, 22(1): 41-45.

• manganese
• anodic stripping voltammetry
• mercury film electrode
• drinking water

Manganese determination in drinking water by anodic stripping voltammetry (ASV) using a mercury film electrode is described. Manganese concentration can be determined in water samples without any chemical pretreatment. The optimal conditions of determination by the ASV method are the following: deposition potential -1.75 V, accumulation time 5-30 s, square wave voltammetry stripping mode. The detection limit for 30 s of accumulation time is about 0.4 mu g l(-1); relative standard deviations in the working range of manganese concentrations do not exceed 0.10. Calcium, magnesium and iron ions at real concentrations do not interfere with manganese determination. A comparison of the ASV method with the standard photometric method for drinking water analysis has shown the equivalency of these methods; however, ASV can be used for the determination of low manganese concentrations and is insensitive to iron ions in water samples.

• 出版日期2011