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本文提出用硝酸、氢氟酸在装有10毫升体积的聚四氟乙烯坩埚的封闭溶样器中分解毫克量的锆英石单矿物样品,以1:25的稀释比,用纤维素DE22直接吸附样品溶液,经低温烘干磨细后,用硼酸作为垫衬压成直径为32毫米的试样,在计算机控制的3080MAX/E型X射线荧光光谱仪上测定锆英石样品中的锆、铪、硅、钠、钾、钙、镁、铝、磷、钛、锰、铁、钇、铀、钍、镧、铈、镨、钕、钐、铒、镱等22个元素、取样10毫克锆英石时,元素的测定下限在0.03%以下,测定锆、铪、硅、磷、钛的相对标准偏差优于0.66%,除钠、铀、镱等元素外,其余元素的相对标准偏差均小于10%。与其它方法比较,本法具有快速、精密度较高、准确度较好的特点。
It is proposed herein to decompose milligram quantities of zircon mono-mineral samples in nitric acid, hydrofluoric acid in a closed dissolver containing a 10 ml volume of polytetrafluoroethylene crucible at a dilution ratio of 1:25 with cellulose DE22 directly Adsorption of the sample solution, after low temperature drying and grinding, with boric acid as a padding pressed into a sample of 32 mm in diameter, measured on a computer controlled 3080MAX / E X-ray fluorescence spectrometer Zirconia zirconium sample, hafnium 22 elements of silicon, sodium, potassium, calcium, magnesium, aluminum, phosphorus, titanium, manganese, iron, yttrium, uranium, thorium, lanthanum, cerium, praseodymium, neodymium, samarium, The relative standard deviation of determination of zirconium, hafnium, silicon, phosphorus and titanium is better than 0.66%. The relative standard deviations of other elements are less than 10 except for sodium, uranium, ytterbium and other elements %. Compared with other methods, this method has the characteristics of high speed, high precision and good accuracy.