ICP-OES法测定包芯线喂料金属钙中铜、镍、铝、铬、锰、硅、铁、镁

Determination of Cu,Ni,Al,Cr,Mn,Si,Fe and Mg in calcium-iron cored wire feedstock of metallic calcium by ICP-OES

研究利用ICP-OES法测定钙铁包芯线喂料金属钙粒中铜、镍、铝、铬、锰、硅、铁和镁等杂质元素的含量,替代以化学法分别单独测定上述元素。将金属钙粒从钙铁包芯线中剥离后筛分,立即用1+1硝酸溶解,采用基体匹配法制作校准曲线,在选定的分析谱线和仪器参数条件下测量,并考察试样的制备条件及称样量对测试结果的影响。该方法相对标准偏差为0.21%~12.5%,回收率90.0%~110%,操作简便、快速、准确度高,可满足日常检测要求。

The method for determination of copper,nickel,aluminum,chromium,manganese,silicon,iron and magnesium in calcium-iron cored wire feedstock of metallic calcium was researched with ICP-OES.The conventional chemical method could be replaced for the complexity of separate element measurement.The stripped metallic calcium particles from calcium-iron cored wire were immediately dissolved with 1+1 nitric acid.The calibration curve was prepared by matrix matching method,and the sample was measured under the condition of distinct spectral lines and instruments parameters.Based on the preparation conditions,the sample quantity of sample was established.The relative standard deviation was in the range of 0.21% to 12.5% and the recovery was between 90.0% to 110%.The result showed that the proposed method was simple,rapid and accurate,which can be suitable for routine test requirement.