Abstract
A simple and rapid method has been developed for the determination of molybdenum and vanadium in seawater using ion-exchange preconcentration and inductively coupled plasma atomic emission spectrometry (ICP-AES). One hundred milliliters of seawater prepared as 0.05 M hydrochloric acid solution is passed through a cellulose phosphate column, and molybdenum and vanadium adsorbed on the cellulose are eluted simultaneously with dilute ammonia solution. The effluent collected is evaporated to a small volume, in which molybdenum and vanadium can be determined by ICP-AES. The overall recoveries of molybdenum and vanadium are 93.6 and 80.4%, respectively, at the level of 1 μgMo/100 ml and 0.1 μgV/100 ml. The proposed method has been successfully applied to the determination of the two elements in several seawater samples. Relative standard deviations (n = 3) are 2.0-2.9 and 0.3-4.3% for molybdenum and vanadium, respectively.
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