initial value of isotopic ratio

用法例句

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。

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。

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。

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。

isotopic ratio in Mars atmosphere

火星大气的同位素比值

Comparison of lead concentration and isotope ratios in children's blood and hair

同体儿童血、发铅浓度及同位素比值研究

The Origin Differentiation of Seized Heroin Us-ing GC-C-IRMS II--Study on the ~(13)C Isotope RatioMass Spectrometry of Seized Heroin;

同位素比值质谱法鉴别缴获的海洛因来源——2.海洛因的碳同位素比值质谱法研究

Laser Resonant Ionization Processes of Lead Atom for the Measurement of Lead Isotopes Ratio;

铅同位素比值测定的激光共振电离研究

Detection of palm oil adulterated into corn oil by carbon isotope ratio method

碳同位素比值法检测棕榈油掺入玉米油的研究

Determination of lead isotope ratios in soil by inductively coupled plasma mass spectrometry and comparison of source differentiation

ICP-MS测定土壤中铅同位素比值及地域差异性比较

Determination of Lead Isotope Ratios of Tobacco by ICP-MS and Their Areal Difference

烟叶中Pb同位素比值的ICP-MS测定及地域差异比较

Determination of Lead Isotope Ratio by Dual Gas Flow-Laser Ablation-Inductively Coupled Plasma-Mass Spectroemtry

双气流路-激光剥蚀电感耦合等离子体质谱测定铅同位素比值

Climatic Implication of Hydrogen Isotope Ratios of Individual n-Alkanes in Lacustrine Sediment on the Tibetan Plateau;

青藏高原湖泊沉积正构烷烃单体氢同位素比值的气候意义

Study on the Preparation of Morphine byHydrolysis of Heroin;

同位素比值质谱法鉴别海洛因来源——1.海洛因水解制备吗啡的研究

The Analysis of Lead Isotope Ratios in Tobacco by Inductively Coupled Plasma Mass Spectrometry

耦合等离子体质谱测定烟叶中铅同位素比值的方法

High-precise Determination of Osmium Isotopic Ratio in the Jinchuan Copper-Nickel Sulfide Ore Samples

金川铜镍硫化物样品中锇同位素比值的高精度分析

An Analysis of the Lead Isotope Ratioes of the Western Han Bronze Mirrors from the Linzi City-site of the Qi State in Shandong

山东临淄齐国故城遗址出土西汉铜镜的铅同位素比值分析

An obvious restraint in the use of isotope ratios results from the need to employ mass spectrometers.

使用同位素比值法有着一个明显的局限因素，就是要用质谱仪进行分析。

Characterization of Mercury-Binding Metallothioneins (MTs) and Measurement of Lead Isotopic Ratios with Inductively Coupled Plasma Mass Spectrometry (ICP-MS);

汞结合金属硫蛋白表征方法和铅同位素比值电感耦合等离子体质谱测定方法的研究

A GC/MS METHOD TO ASSESS ~(15)N RATIOS IN SOIL AMINO SUGARS AND AMINO ACID ENANTIOMERS

测定土壤氨基糖和氨基酸手性异构体中氮同位素比值的气相色谱/质谱方法

Error Estimation of Initail Ritios of Sr-Nd Isotopic and Nd Model Age

Sr-Nd同位素初始比值和Nd模式年龄的误差估算

gas isotope ratio mass spectrometer

气体同位素比质谱计