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 major parameters affecting the accurate and precise measurement of lead isotope ratios by inductively coupled plasma mass spectrometry (ICP-MS) were studied.
在优化后的仪器分析条件下,测定5μg/L的NISTSRM981自然丰度铅同位素标准溶液的各对铅同位素比值,获得的207Pb/206Pb分析精度可优于0。
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。
gas isotope ratio mass spectrometer
气体同位素比质谱计
isotopic ratio in Mars atmosphere
火星大气的同位素比值
DETERMINATION OF ~(87)Sr/~(86)Sr ISOTOPE RATIOS IN WINE
红酒中的~(87)Sr/~(86)Sr同位素比测定
Comparative Research on Maotai-flavor Liquor in Maotai Region According to Boron Isotope Ratio
茅台地区酱香白酒硼同位素比较研究
The isotope ratio is directly used for comparing oils or gases.
同位素比率直接用于比较各种石油或天然气。
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
Depending on the nature of this event, the proportions of the different isotopes of any given elements are somewhat different.
基于这种特性，特定元素的同位素比例会有些许不同。
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
Isotope-ratio Mass Spectrometry Analysis for Detection of Endogenous Anabolic Androgenic Steroids-Androstenedione;
同位素比质谱方法检测内源性类固醇雄烯二酮
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
Measurement of Isotopic Element Rb s Abundance Ratio with Optical Pumping Magnetic Resonance Method;
光泵磁共振法测量同位素铷的丰度比
APPLICATION OF ISOCS TO MEASUREMENT OF ISOTOPIC ABUNDANCE RATIO OF URANIUM
ISOCS在铀同位素丰度比测量中的应用
The isotopic abundance ratio and content are determined with isotopic mass-spectrometry.
文章用同位素质谱法测定了辐照堆元件铀的同位素丰度比和含量。
Xenon possesses nine stable isotopes, produced in various proportions by different nuclear processes.
氙具有九种稳定的同位素，在不同的核反应中所产生的比例不同。
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