波长色散X射线荧光光谱法测定生铁样品中14种元素的含量  

Determination of 14 Elements in Pig Iron Samples by Wavelength Dispersive X-Ray Fluorescence Spectrometry

作　　者：秦建 朱春要 赵希文 张继明 QIN Jian;ZHU Chunyao;ZHAO Xiwen;ZHANG Jiming(Institute of Research of Iron and Steel,Jiangsu Province/Sha-Steel,Zhangjiagang 215625,China)

机构地区：[1]江苏省(沙钢)钢铁研究院,张家港215625

出　　处：《理化检验(化学分册)》2025年第1期64-69,共6页Physical Testing and Chemical Analysis(Part B:Chemical Analysis)

摘　　要：提出了波长色散X射线荧光光谱法测定生铁样品中硅、锰、磷、硫、镍、铬、钒、钼、铜、钛、钨、砷、锡、铅等14种元素含量的方法。生铁样品(直径35 mm,厚度8 mm)采用贺利氏铁水取样器取得,在红热状态下立即敲出,放入冷水槽中急速冷却,再用粒度为0.25 mm的砂纸打磨,通过仪器自带的数字回归法校正谱线重叠干扰,以生铁标准样品和内控样品绘制校准曲线。结果表明,各元素的检出限为0.0003%~0.0014%。样品精密度试验所得测定值的相对标准偏差(n=10)均小于2.5%。方法用于分析3个实际生铁样品,各元素的测定结果均与对应国家标准方法的基本一致。A method for determination of 14 elements,including silicon,manganese,phosphorus,sulfur,nickel,chromium,vanadium,molybdenum,copper,titanium,tungsten,arsenic,tin,and lead in pig iron samples by wavelength dispersive X-ray fluorescence spectrometry was proposed.The pig iron sample(35 mm of diameter and 8 mm of thickness)was obtained with Heraeus hot metal sampler,knocked out immediately under red heat condition and rapidly cooled in a cold water tank,and then polished with a particle size of 0.25 mm sandpaper.Spectral line overlap interference was corrected by the built-in digital regression method of the instrument,and calibration curves were drawn with pig iron standard samples and internal control samples.As shown by the results,the detection limits of the elements were in the range of 0.0003%—0.0014%.RSDs(n=10)of the determined values of test of sample for precision were less than 2.5%.This method was used to analyze 3 actual pig iron samples,and the determination results of 14 elements were basically consistent with those by the corresponding national standard methods.

关 键 词：波长色散X射线荧光光谱法 生铁样品 元素 

分 类 号：O657.34[理学—分析化学]