Determination of Mo(VI) in tap-water and sea-water by differential-pulse polarography and co-flotation |
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| Authors: | Hidalgo J L Gomez M A Caballero M Cela R Perez-Bustamante J A |
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| Institution: | Department of Analytical Chemistry, Faculty of Sciences, University of Cádiz, Spain. |
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| Abstract: | 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. |
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