Determination of Mo(VI) in tap-water and sea-water by differential-pulse polarography and co-flotation

A new method is described for the microdetermination of Mo(VI) in natural waters and sea-water by differential-pulse polarography based on the catalytic wave caused by Mo(VI) in nitrate medium following preconcentration by co-flotation on Fe(III) hydroxide. In the case of sea-water samples, hexadecy...

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Bibliographic Details
Published in:Talanta (Oxford) 1988-04, Vol.35 (4), p.301-305
Main Authors: Hidalgo, J.L., Gomez, M.A., Caballero, M., Cela, R., Perez-Bustamante, J.A.
Format: Article
Language:English
Subjects:
Analytical chemistry
Chemistry
Electrochemical methods
Exact sciences and technology
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Summary:A new method is described for the microdetermination of Mo(VI) in natural waters and sea-water by differential-pulse polarography based on the catalytic wave caused by Mo(VI) in nitrate medium following preconcentration by co-flotation on Fe(III) hydroxide. In the case of sea-water samples, hexadecyltrimethylammonium bromide (HTAB) was used together with octadecylamine as the surfactant. For the analysis of natural water samples only HTAB is needed. Molybdenum in the range 0.7–5.7 ng/ml has been determined.
ISSN:0039-9140
1873-3573
DOI:10.1016/0039-9140(88)80090-0