1) specific isotope ratio
单体同位素比值
1.
The development make it possible to measure the compound-specific isotope ratio of lipid biomarkers in organic matters.
高精度准确测定类脂化合物单体同位素比值对重建古气候古环境具有重要意义。
2) Isotope ratios
同位素比值
1.
In recent years,with the improvement of sensitivity and resolution,its application was increasing to determine radionuclides content and isotope ratios.
近年来,随着检测灵敏度和分辨率的提高,该技术在放射性核素含量和同位素比值测定中的应用日益突出。
4) isotopic ratio
同位素比值
1.
The results show the isotopic ratio for 143Nd/ 144Nd is 0.
采用 VG Axiom型多接收双聚焦等离子质谱仪 ( MC-ICPMS)测定 Nd、Pb、U同位素比值 ,应用指数公式对测定的结果进行质量歧视校正。
5) noble gases isotopic ratios
惰性气体同位素比值
6) lead isotope ratios
铅同位素比值
1.
Lead isotope ratios of tea soil from different regions in Fujian Province were determined by inductively coupled plasma mass spectrometry, the differences of lead isotope ratios (206Pb/207Pb-206Pb/208Pb).
本研究利用电感耦合等离子体质谱测定了福建不同茶园土壤的铅同位素比值,比较了土壤全消解和残渣态两种赋存形态的铅同位素比值的差异,发现残渣态的铅的地域性特征较强,可用来作为地区土壤的判别依据。
2.
Based on the analytical method, lead isotope ratios of Danshen could be accurately measured.
建立了用微柱流动注射与电感耦合等离子体质谱联用的铅同位素比值测量方法。
补充资料：同位素比值
分子式：
CAS号：
性质：某元素中各同位素丰度之比。如18O/16O，13C/12C，34S/32S等。
CAS号：
性质：某元素中各同位素丰度之比。如18O/16O，13C/12C，34S/32S等。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条