H.R. Feltz W.C. Purdy Hans J. Crump-Wiesner 1971 <div id="aep-abstract-id7" class="abstract author"><div id="aep-abstract-sec-id8"><p id="simple-para.0010">A standard addition method is described for the determination of vanadium in brines by atomic absorption spectroscopy with a nitrous oxide-acetylene flame. Sample pH is adjusted to 1.0 with concentrated hydrochloric acid and the vanadium is directly extracted with 5% cupferron in methyl isobutyl ketone (MIBK). The ketone layer is then aspirated into the flame and the recorded absorption values are plotted as a function of the concentration of the added metal. As little as 2.5 μg l⁻¹<span>&nbsp;</span>of vanadium can be detected under the conditions of the procedure. Tungsten and tin interfere when present in excess of 5 and 10 μg ml⁻¹, respectively. The concentrations of the two interfering ions normally found in brines are well below interference levels.</p></div></div><div id="aep-abstract-id9" class="abstract author" lang="fr"><br></div> application/pdf 10.1016/S0003-2670(01)82737-9 en Elsevier The determination of vanadium in brines by atomic absorption spectroscopy article