A method for determining trace organic silicon elements in gasoline using polarized energy dispersive X-ray fluorescence spectroscopy is intro-duced.The samples do not require pre-treatment,and the interference of coexisting elements can be e-liminated.Selecting 0-50 μg/g standard working curve,trace amounts of organic silicon elements in gasoline was determined using a polarization energy dispersive X-ray fluorescence spectrometer.The linear correlation coefficient between organic silicon content and fluorescence intensity in gasoline is 0.9999.The sample spiking recoveiy rate is 95.2％-115.4％.The relative standard deviation of the measured values is 1.8％-10.1％(n=6),and the detection limit is 1.0 μg/g.Compared with the national standard"Determination of silicon content in motor gasoline:Inductively coupled plasma opti-cal emission spectrometry(ICP-OES)(GB/T 33647-2017)",this method has good consistency and can meet the requirements for rapid determina-tion of trace organic silicon elements in gasoline.
关键词
偏振能量色散X射线荧光光谱/测定/汽油/有机硅/方法/研究
Key words
Polarized energy dispersive X-ray flu-orescence spectroscopy/determination/gasoline/or-ganic silicon/method/research
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