ICP-AES法快速测定钨中十几种微量元素

采用iCAP 6300型ICP光谱仪快速测定钨及其化合物中十几种微量元素.氢气还原氧化钨,氢氟酸和硝酸在电热消解仪中消解样品,饱和硼酸络合氟离子,慢速定量滤纸分离钨基体,选择合适的背景校正方法和各元素最佳波长,ICP- AES法快速同时测定钨中的铁、硅、铝、锰、镁、镍、钛、钒、钴、铅、铋、锡、镉、锑、铜、铬、钼、锌杂质...

Fast Determination of More than Ten Kinds of Trace Elements in Tungsten by ICP-AES

This article uses iCAP 6300 ICP spectroscope to determine more than ten kinds of trace elements in tungsten and tungsten compound.Hydrogen returns to original state tungsten oxide,the sample is dissolved by hydrofluoric acid and nitric acid in electric heating resolution meter,fluorine ion is complexed by saturated boric acid,tungsten substrateIdling is separated by slow filter paper,background correction method and optimum wavelength of every elements are selected.The content of Fe,Si,Al,Mn,Mg,Ni,Ti,V,Co,Pb,Bi,Sn,Ge,Sb,Cu,Cr,Mo,Zn in tungsten are determined by ICP-AES.The quota lower limit（μg/g） of these elements above respectively are 0.4、1.2、1.0、0.4、0.1、0.5、0.1、0.3、0.7、0.7、0.8、1.0、0.2、1.4、0.2、0.4、0.6、0.1.When the content is less than 20 μg/g,the tripling standard deviation is within 5.0 μg/g;when the content is less than 50 μg/g,the tripling standard deviation is within 10.0 μg/g.Reclaimable rate is within 90.9%～119.7%.This method is fast and easy operation.It can be applied to production analysis.