X射线荧光光谱法测定轻烧白云石中氧化钙、氧化镁、二氧化硅和磷的含量  

Determination of CaO,MgO,SiO_2 and P in Light-burnt Dolomite by XRF

作　　者：何雪峰[1] 奚居柏[1] 

机构地区：[1]马鞍山钢铁股份有限公司

出　　处：《安徽冶金》2013年第1期38-39,42,共3页Anhui Metallurgy

摘　　要：建立了X射线荧光光谱法测定轻烧白云石中氧化钙、氧化镁、二氧化硅、磷的方法。试样以四硼酸锂做熔剂、溴化铵做脱模剂制备玻璃熔片,以标准物质和高纯碳酸钙、高纯氧化镁制备标准样片做校正曲线,应用基本参数法进行校正回归,试样测定结果的相对标准偏差(n=10)RSD在0.20%～3.00%之间。用化学法同时进行比对试验,两种方法的测定结果相符,满足轻烧白云石的检测需求。An analysis method for determining CaO, MgO, SiO2 and P in light-burnt dolomite using X-ray fluorescence spectrometer （XRF） was established. Glass fuse was prepared with lithium tetraborate as the flux and ammonium bromide as the mold spray; and calibration curve was drawn using standard sample pieces made with standard material and high-purity calcium carbonate and magnesium oxide; while basic parameters were used to make calibration regression. The relative standard deviation （n= 10） RSD of the test result was in the range of 0.2 %-3.00%. Comparison test by chemical method produced the same result, proving that the XRF method can meet the analysis requirement of light-burnt dolomite.

关 键 词：X射线荧光光谱法 轻烧白云石 熔融 相对标准偏差 

分 类 号：TQ132.2[化学工程—无机化工]