By the chemical reaction of Cr at high temperature,the fractionation effect of hydrogen isotope was reduced,and hydrogen element was converted into hydrogen gas as much as possible,thus accurate hydro-gen isotope ratios were obtained.The filling material of the original method was replaced with chromium particles and corundum spheres(the new method).The method had good linearity(R2=0.999 5)in simultane-ously determining stable hydrogen isotope reference materials of three kinds of solid and three kinds of water sam-ples.The hydrogen isotope measurements of solid samples could be directly associated with the internationally recognized water standard material VSMOW-SLAP scale.The results by the original and new methods for the de-termination of chemicals containing impurities,hair and tea samples were different,but those of polyethylene without impurities were both accurate.
关键词
氢稳定同位素/同位素比值质谱法/铬/高温转化/水质
Key words
Stable hydrogen isotope/Isotopic mass spectrometry/Chromium/Conversion at high tempera-ture/Water quality
维普
万方数据