ISSN:
1436-5073
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Summary A new catalytic method for the determination of nanogram level of Mn(II) is developed, which is based on its catalytic effect on the aerial oxidative coupling reaction of 3-methyl-2-benzothiazolinone hydrazone (MBTH) withN, N-dimethylaniline (DMA) to form an indamine dye (λmax=590 nm) in the presence of 1,10-phenanthroline (phen) as an activator. A detection limit of 〈0.05 ng Mn(II)/ml can be achieved and as low as 10−9 M Mn(II) can easily be determined by measuring the absorbance of the dye at a fixed time (50 min at 30° C). The proposed method was successfully applied to the determination of manganese in natural waters by using 0.02–4 ml of water samples without preconcentration and separation.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01197827
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