US EPA

3705141 

Journal Article 

Indirect complexometric determination of manganese(II) using tartaric acid as a masking agent 

Chandrashekhara, KG; Bhat, NG; Narayana, B; Nagaraj, P 

2014 

Yes 

Journal of the Indian Chemical Society
ISSN: 0019-4522 

91 

10 

1973-1975 

English 

WOS:000350330000018 

http://://WOS:000350330000018
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A complexometric method for the determination of manganese in the presence of other metal ions based on the selective masking ability of tartaric add towards manganese is described. Manganese(II) present in a given sample solution is complexed with a known excess of EDTA and surplus EDTA is titrated against lead nitrate solution at pH 5-6 using xylenol orange as the indicator. A known excess of 10% solution of tartaric acid is then added. The mixture is then shaken well and the EDTA released from Mn-EDTA complex is titrated against the standard lead nitrate solution. Reproducible and accurate results are obtained for 1.10 to 33.0 mg of manganese(II) with relative error <= 0.51% and standard deviations <= 0.12 mg. The interference of various ions are studied. This method was applied to the determination of manganese(II) in its alloy composition. 

Complexometric; manganese(II) determination; masking; tartaric acid