The invention relates to a standard sample for analyzing trace elements of high-purity
tungsten and a preparation method of the standard sample, and belongs to the field of analysis and detection of high-purity metals. The standard sample comprises elements of Al, As, B, Ba, Bi, Ca, Cd, Cu, Cr, Co, Fe, Hf, K, Mg, Mn, Mo, Na, Ni, P, Pb, Sb, Si, Sn, Sr, Ta, Ti, Zn and Zr, the content of each element is 0.1 ppm to 500 ppm, and the balance is W. The method comprises following steps of: putting the raw materials into an
evaporation stirrer to obtain crude
ammonium tungstate crystals; performing hydrogenation reduction to obtain
tungsten powder; performing mechanical stirring, performing ball-milling crushing, and performing mechanical stirring and mixing again; detecting the content of
impurity elements; briquetting and
sintering the material; and performing component uniformity inspection and valuing on the
chemical standard sample. The high-purity
tungsten standard sample obtained by the method disclosed by the invention is regular in shape, uniform in component, good in stability and accurate in fixed value, and can be used for correcting a high-purity tungsten
trace element measurement result and monitoring an instrument and
equipment state.