电感耦合等离子体质谱法测定黄沙土壤中铅同位素比

Determination of Lead Isotopic Ratios in Original KOSA Soils by Inductively Coupled Plasma Mass Spectrometry

中文关键词:  铅  同位素比  黄沙原土  ICP—MS  ICP—AES  土壤分析

英文关键词:Lead  Isotope ratio  Original KOSA soil  Inductively coupled plasma mass spectrometry  Inductively coupled plasma atomic emission spectrometry  Soil analysis

中文摘要:

      用电感耦合等离子体质谱法(ICP-MS)测定了5个黄沙原土样品中铅同位素比²⁰⁷Pb/²⁰⁶Pb、²⁰⁸Pb/²⁰⁶Pb,样品来自被认为是黄沙气溶胶源地区,为了使铅同位素测量中质量偏差和漂移减至最少,在样品中加入了铊标准溶液,测量²⁰⁵Tl/²⁰³Tl比,校正质量数差别选择的影响。同时,采用ICP-MS和电感耦合等离子体原子发射光谱法(ICP-AlS)测定了随粒径变化样品中12种元素浓度的变化。

英文摘要:

      Five original KOSA soils,collected in the locations of being thought to be the origins of KOSA aerosol in China,were analyzed by inductively coupled plasma mass spectrometry (ICP-MS) to determine the lead isotope ratios ²⁰⁷Pb/²⁰⁶Pb and ²⁰⁸Pb/²⁰⁶Pb.Tominimize mass bias and drift in Pb isotope measurement,the mass discrimination correction,based upon the addition of thallium to the samples and measurement of ²⁰⁵Tl/²⁰³Tl ratio,was used.At the same the, concentrations of 12 elments were determined as a function of particle-size by ICP-MS and induedvely coupled plasma atomic emission spectrometry (ICP-AES).