Spectra of KX-rays emitted from pure 3 dtransition metals and their oxide and sulfate compounds were measured using a single crystal wavelength dispersive X-ray spectroscopy(WDXRF).The measurements were performed usin...Spectra of KX-rays emitted from pure 3 dtransition metals and their oxide and sulfate compounds were measured using a single crystal wavelength dispersive X-ray spectroscopy(WDXRF).The measurements were performed using a ZSX-100 esequential spectrometer equipped with an RhX-ray tube operated.An accurate analytical representation of each line was obtained by a fit to a Lorentz function.The spectra were analyzed in order to examine the KX-ray peak parameters such as asymmetry index,peak energy and relative intensity ratios.The energy shifts and relative intensities weredetermined tobetter understand the chemical effect.展开更多
利用SINDIE 7039型单波长色散X射线荧光光谱仪,按ASTM D 7039-07标准方法,测定原油、汽油、柴油等油品的硫含量,分析了操作及样品条件对测定结果的影响,考察了方法的准确度和精密度,并将测定结果与仲裁标准SH/T 0689-2000或.GB/T 17040-...利用SINDIE 7039型单波长色散X射线荧光光谱仪,按ASTM D 7039-07标准方法,测定原油、汽油、柴油等油品的硫含量,分析了操作及样品条件对测定结果的影响,考察了方法的准确度和精密度,并将测定结果与仲裁标准SH/T 0689-2000或.GB/T 17040-2008进行了对比.结果表明,测试环境、样品组成、薄膜及样品盒等操作条件均会影响测试结果;该方法准确度测定相对标准偏差不超过1.7％,精密度测定90#汽油、0#柴油和原油样品的相对标准偏差均不超过1.4％,柴油加标回收率为93.6％～104.6％,与对应仲裁标准的分析结果基本吻合,能够满足ASTM D 7039-07标准的要求.展开更多
基金the Scientific and Technological Research Council of Turkey (TUBITAK), under the project No. 10GT045
文摘Spectra of KX-rays emitted from pure 3 dtransition metals and their oxide and sulfate compounds were measured using a single crystal wavelength dispersive X-ray spectroscopy(WDXRF).The measurements were performed using a ZSX-100 esequential spectrometer equipped with an RhX-ray tube operated.An accurate analytical representation of each line was obtained by a fit to a Lorentz function.The spectra were analyzed in order to examine the KX-ray peak parameters such as asymmetry index,peak energy and relative intensity ratios.The energy shifts and relative intensities weredetermined tobetter understand the chemical effect.
文摘利用SINDIE 7039型单波长色散X射线荧光光谱仪,按ASTM D 7039-07标准方法,测定原油、汽油、柴油等油品的硫含量,分析了操作及样品条件对测定结果的影响,考察了方法的准确度和精密度,并将测定结果与仲裁标准SH/T 0689-2000或.GB/T 17040-2008进行了对比.结果表明,测试环境、样品组成、薄膜及样品盒等操作条件均会影响测试结果;该方法准确度测定相对标准偏差不超过1.7％,精密度测定90#汽油、0#柴油和原油样品的相对标准偏差均不超过1.4％,柴油加标回收率为93.6％～104.6％,与对应仲裁标准的分析结果基本吻合,能够满足ASTM D 7039-07标准的要求.
