 ISSN 0235-7216 ISSN 2424-4538 (online) |
2011 m. Nr. 1 Determination of manganese in drinking water by anodic stripping voltammetry at a mercury film electrode
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 μg 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. Keywords: manganese, anodic stripping voltammetry, mercury film electrode, drinking water |
Issues:
2017 - Vol.28 No. 1, No. 2, No. 3, No. 4 2016 - Vol.27 No. 1, No. 2, No. 3, No. 4 2015 - Vol.26 No. 1, No. 2, No. 3, No. 4 2014 - Vol.25 No. 1, No. 2, No. 3, No. 4 2013 - Vol.24 No. 1, No. 2, No. 3, No. 4 2012 - Vol.23 No. 1, No. 2, No. 3, No. 4 2011 - Vol.22 No. 1, No. 2, No. 3, No. 4 2010 - Vol.21 No. 1, No. 2-4 2009 - Vol.20 No. 1, No. 2, No. 3, No. 4 2008 - Vol.19 No. 1, No. 2, No. 3-4 2007 - Vol.18 No. 1, No. 2, No. 3, No. 4 2006 - Vol.17 No. 1, No. 2-3, No. 4 2005 - Vol.16 No. 1, No. 2, No. 3-4 2004 - Vol.15 No. 1, No. 2, No. 3, No. 4 2003 - Vol.14 No. 1, No. 2, No. 3, No. 4 2002 - Vol.13 No. 1, No. 2, No. 3, No. 4 2001 - Vol.12 No. 1, No. 2, No. 3, No. 4 |