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用双稀释法测定地质样品中的铅同位素组成 被引量：4

Pb ISOTOPIC ANALYSIS OF GEOLOGICAL SAMPLES USING ^(204)Pb-^(207)Pb DOUBLE THINNER
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摘要 随着超净化实验室条件的完善以及多接收同位素质谱技术的成熟 ,铅同位素双稀释法倍受关注。用双稀释法测定铅同位素比值的方法原理 ,以及 2 0 4 Pb- 2 0 7Pb双稀释剂的配制和标定方法。通过对标准物质 NBS981和地质样品的分析测定 ,表明用双稀释法测定铅同位素比值 ,可以有效校正由质谱分析造成的同位素分馏效应 ,从而提高分析结果的精度和准确度。 Pb isotope analysis of using a 204Pb- 207Pb double thinner has drawn much attention with the ultra-clean chemical laboratory and multi-collector mass spectrometry. The principles of Pb isotope analysis of using a double thinner are introduced, and the method of compound and determination of 204Pb- 207Pb double thinner are presented. The Pb isotopic analyses for standard NBS981 and geological samples suggest that isotopic fractionation caused by mass spectrometry can be corrected effectively by using a 204Pb- 207Pb double thinner and thus improve the precision and accuracy of the analysis.
作者 王林森 张利
机构地区 中国地质大学地球科学学院
出处 《矿物岩石》 CAS CSCD 北大核心 2003年第2期44-48,共5页 Mineralogy and Petrology
基金 国土资源部壳幔开放实验室基金
关键词 双稀释法 地质样品 铅同位素 标定方法 质谱分析 同位素分馏效应 精度 204Pb-207Pb double thinner Pb isotopic analysis isotopic fractionation
分类号 P575 [天文地球—矿物学] P597 [天文地球—地球化学]
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参考文献14

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同被引文献67

  • 1郭庆军,杨卫东,余娅.铅同位素“双稀释剂”同位素定年法计算方法研究[J].矿物岩石地球化学通报,2000,19(3):193-196. 被引量：3
  • 2何学贤,唐索寒,朱祥坤,王进辉.多接收器等离子体质谱(MC-ICPMS)高精度测定Nd同位素方法[J].地球学报,2007,28(4):405-410. 被引量：43
  • 3Dodson M H. A theoretical study of the use of internal standards for precise isotopic analysis by the surface ionization technique. Part I . General first order algebraic solutions [ J ]. Journal of Scientific Ir~truments, 1963, 40 : 289 - 295.
  • 4Compston W, Oversby V M. Lead isotopic analysis using a double spike [ J ]ournal of Geophysical Research, 1969, 74(17) : 4338 -4348.
  • 5Cooper J A, Reynolds P H, Richards J H. Double spike calibration of the Broken Hill standard lead ~ J ]. Earth and Planetary Science Letters, 1969, 6 : 467 - 478.
  • 6Galer S J G. Optimal double and triple spiking for high precision lead isotopic measurement [ J ]. Chemical Geology, 1999, 157 : 255 - 274.
  • 7Hamelin B, Manhs G, Albarde F, Alligre C J. Precise lead isotope measurements by the double spike technique: A reconsideration [ J ]. C, eochimica et Cosmochimica Acta, 1985, 49 : 173 - 182.
  • 8Powell R, Woodhead J, Hergt J. Uncertainties on lead isotope analyses : Deconvolution in the double spike method [J]. Chemical Geology, 1998, 148 : 95 - 104.
  • 9Thirlwall M F. Muhicollector ICP-MS analysis of Pb isotopes using a 2^207vpb-^204 Pb double spike demonstrates up to 4000 ppm/amu systematic errors in Tl-normalization [ J]. Chemical Geology,2002, 184 : 255 - 279.
  • 10Baker J, Peate D, Waight T, Meyzen C. Pb isotopic analysis of standards and samples using a ^207pb-^204Pb double spike and thallium to correct for mass bias with a double-focusing MC-ICP-MS [ J ]. Chemical Geology, 2004,211:275 - 303.

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矿物岩石
2003年 第2期

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