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, 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.
Hidalgo
J L
JL
Department of Analytical Chemistry, Faculty of Sciences, University of Cádiz, Spain.
Gomez
M A
MA
Caballero
M
M
Cela
R
R
Perez-Bustamante
J A
JA