同位素双稀释剂法的原理与应用Ⅱ:应用部分
The Principle and Application of Isotopic Double Spike Technique: The Application
查看参考文献32篇
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文摘
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为了使国内研究人员更为深入的了解双稀释剂法的原理和应用,本文以~(74)Se+~(77)Se双稀释剂为例,详细介绍了双稀释剂法在应用过程中所涉及的双稀释剂配比优化、标定及高精度数据获取的方法和流程。并分别通过蒙特-卡洛数值优化方法和实测数据对~(74)Se+~(77)Se双稀释剂进行了配比的优化,得到了两单稀释剂间和双稀释剂与样品间最佳的取值范围:当~(74)Se_(spk)/~(77)Se_(spk)≈1时,~(77)Se_(spike)/~(78)Se_(sample)≈2为最优配比值,但~(77)Se_(spike)/~(78)Se_(sample)在1~ 4范围内,硒同位素的分析精度不受影响。基于双稀释的优化结果,对NIST SRM 3149、MH495、GBW(E) 080215三种Se的标准溶液进行长期测定,相对于NIST SRM 3149,δ~(82)/~(76)Se值分别为0.00‰±0.10‰(2SD,n= 65),-3.44‰±0.08‰(2SD,n= 21)和-7.90‰±0.10‰(2SD,n= 21)。通过与标准-样品匹配法和元素内标法获取的数据进行对比,双稀释剂法获取的数据具有更高的准确度和精密度,这为自然界微小同位素分馏过程的研究奠定了基础。 |
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其他语种文摘
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In order to let domestic researchers to deeply understand the principle and application of the isotopic double spike technique,methods and procedures for the proportion optimization and calibration of the double spike and the high precision data acquisition,which are associated with the application of the isotopic double spike technique,have been detailly introduced in this paper by taking the~(74)Se+~(77)Se double spike as an example. On the basis of the result of the Monte Carlo numerical optimization and measured data,the proportion optimization for the~(74)Se+~(77)Se double spike has been carried out. It is obtained that optimized ratios between the double spike and sample is about 2(77 Sespike /78 Sesample≈2) when the ratio between two single diluents is about 1(~(74)Se_(spk) /~(77)Se_(spk)≈1) . If the ~(77)Se_(spike) /~(78)Se_(sample) ratios vary from 1 to 4,the analytical precision of Se isotopic values(δ~(82)/~(76)Se) is unaffected. Based on the accurate proportion optimization of the DS,the long-term measured δ~(82)/~(76)Se values of the three standard solutions of NIST SRM 3149,MH495 and GBW(E) 080215 are 0.00‰±0.10‰(2SD,n = 65),-3.44‰±0.08‰(2SD,n = 21),and -7.88‰±0.10‰(2SD,n = 21),respectively. Comparing to data obtained by using the standard-sample matching method and the inside element method,the data obtained by using the double spike technique have relative high accuracy and precision Therefore,the application of double spike can lay the foundation for studying small isotope fractionation process in nature. |
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来源
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矿物岩石地球化学通报
,2017,36(6):948-954 【核心库】
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DOI
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10.3969/j.issn.1007-2802.2017.06.010
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关键词
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同位素双稀释剂
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硒同位素
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双稀释剂优化
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双稀释剂标定
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分馏校正
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地址
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1.
中国科学院地球化学研究所, 环境地球化学国家重点实验室, 贵阳, 550081
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中国地质大学(北京), 地质过程与矿产资源国家重点实验室, 北京, 100083
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1007-2802 |
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学科
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地质学 |
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基金
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国家自然科学基金项目
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国家973计划
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文献收藏号
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CSCD:6165414
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参考文献 共
32
共2页
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1.
Arnold T. Measurement of zinc stable isotope ratios in biogeochemical matrices by double-spike MC-ICPMS and determination of the isotope ratio pool available for plants from soil.
Analytical and Bioanalytical Chemistry,2010,398(7/8):3115-3125
|
CSCD被引
4
次
|
|
|
|
|
2.
Carignan J. Scaling NIST SRM 3149 for Se isotope analysis and isotopic variations of natural samples.
Chemistry Geology,2007,242(3/4):347-350
|
CSCD被引
7
次
|
|
|
|
|
3.
Coath C D. 2016. Double-spike inversion for three-i-sotope systems.
Chemical Geology,2017,451:78-89
|
CSCD被引
4
次
|
|
|
|
|
4.
Cumming G L. Propagation of experimental errors in lead isotope ratio measurements using the double spike method.
Chemical Geology,1973,11(3):157-165
|
CSCD被引
7
次
|
|
|
|
|
5.
Dodson M H. A theoretical study of the use of internal standards for precise isotopic analysis by the surface ionization technique: Part Igeneral first-order algebraic solutions.
Journal of Scientific Instruments,1963,40(6):289-295
|
CSCD被引
9
次
|
|
|
|
|
6.
Elwaer N. Comparative performance study of different sample introduction techniques for rapid and precise selenium isotope ratio determination using multi-collector inductively coupled plasma mass spectrometry(MC-ICP/MS).
Analytical and Bioanalytical Chemistry,2007,389(6):1889-1899
|
CSCD被引
4
次
|
|
|
|
|
7.
Gall L. Determination of massdependent variations in nickel isotope compositions using double spiking and MC-ICPMS.
Journal of Analytical Atomic Spectrometry,2012,27(1):137-145
|
CSCD被引
5
次
|
|
|
|
|
8.
Gueguen B. Nickel isotope variations in terrestrial silicate rocks and geological reference materials measured by MC-ICP-MS.
Geostandards and Geoanalytical Research,2013,37(3):297-317
|
CSCD被引
4
次
|
|
|
|
|
9.
Hamelin B. Precise lead isotope measurements by the double spike technique: A reconsideration.
Geochimica et Cosmochimica Acta,1985,49(1):173-182
|
CSCD被引
7
次
|
|
|
|
|
10.
He Y S. High-precision iron isotope analysis of geological reference materials by high-resolution MC-ICP-MS.
Geostandards and Geoanalytical Research,2015,39(3):341-356
|
CSCD被引
14
次
|
|
|
|
|
11.
John S G. Optimizing sample and spike concentrations for isotopic analysis by double-spike ICPMS.
Journal of Analytical Atomic Spectrometry,2012,27(12):2123-2131
|
CSCD被引
5
次
|
|
|
|
|
12.
Johnson T M. Selenium isotope ratios as indicators of selenium sources and oxyanion reduction.
Geochimica et Cosmochimica Acta,1999,63(18):2775-2783
|
CSCD被引
12
次
|
|
|
|
|
13.
Marechal C. Precise analysis of copper and zinc isotopic compositions by plasma-source mass spectrometry.
Chemical Geology,1999,156(1/4):251-273
|
CSCD被引
98
次
|
|
|
|
|
14.
Mead C. Hg stable isotope analysis by the doublespike method.
Analytical and Bioanalytical Chemistry,2010,397(4):1529-1538
|
CSCD被引
8
次
|
|
|
|
|
15.
Ripperger S. Cadmium isotope fractionation in seawater-a signature of biological activity.
Earth and Planetary Science Letters,2007,261(3/4):670-684
|
CSCD被引
19
次
|
|
|
|
|
16.
Rouxel O. Natural variations of Se isotopic composition determined by hydride generation multiple collector inductively coupled plasma mass spectrometry.
Geochimica et Cosmochimica Acta,2002,66(18):3191-3199
|
CSCD被引
17
次
|
|
|
|
|
17.
Rudge J F. The double spike toolbox.
Chemical Geology,2009,265(3/4):420-431
|
CSCD被引
27
次
|
|
|
|
|
18.
Schoenberg R. An assessment of the accuracy of stable Fe isotope ratio measurements on samples with organic and inorganic matrices by high-resolution multicollector ICP-MS.
International Journal of Mass Spectrometry,2005,242(2/3):257-272
|
CSCD被引
18
次
|
|
|
|
|
19.
Siebert C. Determination of molybdenum isotope fractionation by double-spike multicollector inductively coupled plasma mass spectrometry.
Geochemistry,Geophysics,Geosystems,2001,2(7):1032
|
CSCD被引
19
次
|
|
|
|
|
20.
Thirlwall M F. Multicollector ICP-MS analysis of Pb isotopes using a 207Pb-204Pb double spike demonstrates up to 400 × 10-6/AMU systematic errors in Tl-normalization.
Chemical Geology,2002,184(3/4):255-279
|
CSCD被引
14
次
|
|
|
|
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