Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10561001 | Talanta | 2005 | 6 Pages |
Abstract
A novel flow-injection spectrophotometric method has been developed for the determination of manganese(II) at sub-nanogram/ml levels. The method is based on its catalytic effect on the oxidation of N,Nâ²-bis(2-hydroxy-3-sulfopropyl)tolidine (HSPT) by periodate. The catalytic effect of manganese(II) was enhanced by the presence of 2,2â²-bipyridine as an activator. By monitoring the change in absorbance of the oxidation product of HSPT at 670 nm, manganese(II) ranging 0.02-3.0 ng mlâ1 could be determined with the relative standard deviations of less than 2%. The interfering ions were effectively suppressed by the addition of 2,2â²-iminodiethanol and citric acid. The proposed method is directly applicable to the determination of manganese in lake and river water samples.
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
Shigenori Nakano, Yuko Matumoto, Masahiro Yoshii,