X射线荧光光谱分析水基标样替代油基标样的实现  

Realization of Replacing Oil-base Standard Sample with Water-base Standard Sample in X-Ray Fluorescence Spectrometry

作　　者：王谦[1] 张建波[1] 应晓浒 邬蓓蕾[1] 王群威[1] 王豪[1] 

机构地区：[1]宁波出入境检验检疫局,宁波315012 [2]布鲁克AXS有限公司北京代表处,北京100081

出　　处：《分析化学》2011年第11期1726-1731,共6页Chinese Journal of Analytical Chemistry

基　　金：国家质检总局资助项目(Nos.2004IK009;2006IK057)

摘　　要：用水基标样替代油基标样,建立X射线荧光光谱测定石油及其产品中微量元素含量的方法。以钒、锰、铁、镍为研究对象,采用乳化技术制备试样,用乳化剂司班80将水基标样和油结合起来,合成油包水型乳状液;采用理论α影响系数法和内标法校准油水差异校正基体效应。实验发现,如果基体组成已知,理论α影响系数法可以校正水基和油基的基体差异,水基标样和油基标样可直接互换;如果基体组成未知,采用内标法校正基体效应,需要将样品合成油水混合液校正才能成功。用原油和燃料油样品进行对比实验,测得结果与标准方法一致。In the field of oil analysis by X-ray fluorescence spectrometry, a method was developed on basis of water-based standard sample instead of oil-based standard sample. Selecting the elements of vanadium, iron, nickel and manganese as the research objects, emulsification technology was applied to synthesize oil-water mixture in sample preparation and water-based standard sample and blank oil synthesized water-in-oil emulsion with emulsifier span80. The matrix effect was corrected by theoretical a influence coefficients or internal standard method. It was found that when the matrix composi- tion of oil-base sample or water-base sample was known, the matrix effect was corrected by theoretical a influence coefficients, calibration samples of oil-base or water-base could be exchanged, and when the matrix composition was unknown, the matrix effect was corrected by internal standard method, but only synthesized oil-water mixture, calibration to be successful. Accuracy of the method was verified by comparison test of crude oil and fuel oil samples, the method was compared with the standard method, both test results were consistent.

关 键 词：X射线荧光光谱 油溶性 酸溶性 乳状液 乳化剂 

分 类 号：TE622.1[石油与天然气工程—油气加工工程] O657.34[理学—分析化学]