Simultaneous Determination of Trace Beryllium, Scandium, Ytterbium and Zinc in High-purity Sodium Tungstate by Coprecipitation and ICP-AES

ICP-AES has been developed for the simultaneous determination of trace beryllium, scandium, ytterbium and zinc in high purity sodium tungstate Coprecipitation of these elements with lathanum hydroxide was to separate the mfrom the matrix and for concentration It was found that the seelements could be satisfactory recovered after two times of coprecipitation with 6 mL lathanum solution (1%) at pH 12 0 The recoveries of them are in the range of 92 7%～102 5%, and RSD in 2 8%～5 9%.