激光共振电离质谱法测量锡的同位素比

引用本文: 沈小攀, 李志明, 王文亮, 翟利华, 邓虎, 徐江, 韦冠一, 汪伟. 激光共振电离质谱法测量锡的同位素比[J]. 分析化学, 2017, 45(3): 342-347. doi: 10.11895/j.issn.0253-3820.160840 shu

Citation: SHEN Xiao-Pan, LI Zhi-Ming, WANG Wen-Liang, ZHAI Li-Hua, DENG Hu, XU Jiang, WEI Guan-Yi, WANG Wei. Measurement of Tin Isotope Ratios by Laser Resonance Ionization Mass Spectrometry[J]. Chinese Journal of Analytical Chemistry, 2017, 45(3): 342-347. doi: 10.11895/j.issn.0253-3820.160840 shu

激光共振电离质谱法测量锡的同位素比

西北核技术研究所, 西安 710024
基金项目:
本文系国家重大科学仪器设备开发专项项目(No.2012YQ250003)资助

摘要: 采用实验室研制的激光共振电离质谱仪，建立了锡(Sn)同位素的激光共振电离质谱分析方法。测量了锡原子的自电离态光谱，确认了锡的一条三色三光子共振电离路径，其各步激发/电离的激光波长分别为λ₁=286.4 nm、λ₂=811.6 nm、λ₃=823.7 nm；通过将样品与氧化石墨烯溶液混合制样，有效提高了锡样品的电热原子化效率，1 μg锡的总探测效率达到3×10^-5以上，是直接滴样方式的4.5倍左右。采用本方法对锡、锑、碲(1：1：1，m/m)混合模拟样品进行测试，实现了锡的选择性电离，有效避免了测量过程中锑、碲对锡的同量异位素干扰，样品中主要同位素比¹¹⁶Sn/¹²⁰Sn，¹¹⁷Sn/¹²⁰Sn，¹¹⁸Sn/¹²⁰Sn和¹¹⁹Sn/¹²⁰Sn测量的相对标准偏差均<1%。结果表明，本方法能够有效解决TIMS、ICP-MS等商业质谱仪在锡同位素质谱分析过程中的同量异位素干扰难题，有望应用于反应堆乏燃料中裂变产物^121mSn、¹²⁶Sn的测量。

关键词:

English

Measurement of Tin Isotope Ratios by Laser Resonance Ionization Mass Spectrometry

Northwest Institute of Nuclear Technology, Xi'an 710024, China
Received Date: 18 November 2016
Revised Date: 26 December 2016
Fund Project:
This work was supported by the National Major Scientific Instruments and Equipments Special Project (No.2012YQ250003)

Abstract: A preliminary method based on the laser resonance ionization mass spectrometer (LRIMS) developed in the laboratory was established to determine tin isotope ratios. By measuring the auto-ionization spectrum of tin atoms, a three-color-three-photon resonance ionization scheme was confirmed, and the laser wavelengths of each excitation/ionization step were λ₁=286.4 nm, λ₂=811.6 nm and λ₃=823.7 nm. More effective electrothermal atomization of tin was implemented by mixing the samples and grapheme oxide solution, and the total detection efficiency of 1 μg of tin sample was above 3×10^-5, which was about 4.5 times as high as the method of directly dropping samples. A tin-antimony-tellurium mixture at a ratio of 1:1:1 (m/m) was prepared as a simulant sample, and the major tin isotope ratios in the sample were determined. Results showed that the isobaric interference from antimony and tellurium was effectively avoided, and the relative standard deviations for ¹¹⁶Sn/¹²⁰Sn, ¹¹⁷Sn/¹²⁰Sn, ¹¹⁸Sn/¹²⁰Sn, ¹¹⁹Sn/¹²⁰Sn were all better than 1%. This work indicated that LRIMS could effectively avoid the isobaric interference in the measurement of tin isotope ratios, and could be applied to measure the fission product ^121mSn and ¹²⁶Sn in the reactor spent fuel.

Key words:

Laser resonance ionization mass spectrometry
/ Tin
/ Isobaric interference
/ Isotope ratio
/ Element selectivity

1. [1]
  Yamazaki E, Nakai S, Yokoyama T, Ishihara S, Tang H F. Geochem. J., 2013,47:21-35
2. [2]
  LIANG Bang-Hong, ZHANG Jin-Song, LI Yi-Cai, CHEN Yun-Ming, ZHANG Ge, DU Wen-He. Journal of Chinese Mass Spectrometry Society, 2012,33(6):349-352 梁帮宏, 张劲松, 李已才, 陈云明, 张舸, 杜文鹤.质谱学报,2012,33(6):349-352
3. [3]
  ZHANG Sheng-Dong, LIU Jun-Ling, GUO Jing-Ru, LI Jin-Ying, CUI An-Zhi, LI Da-Ming, MAO Guo-Shu. Journal of Nuclear and Radiochemistry, 2000,22(3):129-135 张生栋, 刘峻岭, 郭景儒, 李金英, 崔安智, 李大明, 毛国淑.核化学与放射化学,2000,22(3):129-135
4. [4]
  Malinovskiy D, Moens L, Environ V F. Sci. Technol., 2009,43:4399-4404
5. [5]
  Hernńndez C, Fernández M, Quejido A J, Sánchez D M, Morante R, Martín R. Anal. Chim. Acta, 2006,571:279-287
6. [6]
  SHEN Hong-Tao, JIANG Shan, HE Ming, DONG Ke-Jun, WU Shao-Yong, HE Guo-Zhu, LI Zhen-Yu, LI Chao-Li, HE Xian-Wen, ZHANG Wei. Atomic Energy Science and Technology, 2012,46(2):155-159 沈洪涛, 姜山, 何明, 董克君, 武绍勇, 贺国珠, 李振宇, 李朝历, 何贤文, 张伟.原子能科学技术,2012,46(2):155-159
7. [7]
  Hurst G S, Payne M G, Nayfeh M H, Judish J P, Wagner E B. Chem. Phys. Lett., 1975,75(3):468-472
8. [8]
  Hurst G S, Payne M G, Kramer S D, Young J P. Rev. Mod. Phys., 1979,51(4):767-819
9. [9]
  Letokhov V S, Ambartzumian R V. Appl. Opt., 1972,11(2):354-361
10. [10]
  Beekman D W, Callcott T A, Kramer S D, Arakawa E T, Hurst G S, Nussbaum E. Int. J. Mass Spectrom. Ion Phys., 1980,34(1):89-97
11. [11]
  Crowther S A, Mohapatra R K, Turner G, Blagburn D J, Kehm K, Gilmour J D. J. Anal. At. Spectrom., 2008,23:938-947
12. [12]
  Iwata Y, Ito C, Harano H, Aoyama T. Int. J. Mass Spectrom., 2010,296:15-20
13. [13]
  Stephan T, Trappitsch R, Davis A M, Pellin M J, Rost D, Savina M R, Yokochi R, Liu N. Int. J. Mass Spectrom., 2016,407:1-15
14. [14]
  Eichler B, Hübener S, Erdmann N, Eberhardt K, Funk H, Herrmann G, Köhler S, Trautmann N, Passler G, Urban F J. Radiochim. Acta, 1997,79(4):221-233
15. [15]
  Saloman E B. Spectrochim. Acta, 1992,47B(4):517-545
16. [16]
  Scheerer F, Albus F, Ames F, Kluge H J, Trauemann N. Spectrochim. Acta B, 1992,47(6):793-797
17. [17]
  Perkins J F. Phys. Rev. A, 1970,2(5):1704-1707
18. [18]
  Payne M G, Allman S L, Parks J E. Spectrochim. Acta B, 1991,46(11):1439-1457
19. [19]
  Sankari M. Int. J. Optics, 2011,2011:1-10

扫一扫看文章

计量

PDF下载量: 3
文章访问数: 603
HTML全文浏览量: 36

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

激光共振电离质谱法测量锡的同位素比

English

Measurement of Tin Isotope Ratios by Laser Resonance Ionization Mass Spectrometry

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

CCS Chemistry：颜徐州、鲍哲南：你的皮肤可能是一片SPMs

CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

CCS Chemistry：静电组装导向聚合- 聚电解质纳米凝胶量化制备新策略

CCS Chemistry：金黄色葡萄球菌醛基脱氢酶是如何识别特异性底物的？

计量

通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

激光共振电离质谱法测量锡的同位素比

English

Measurement of Tin Isotope Ratios by Laser Resonance Ionization Mass Spectrometry

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

CCS Chemistry：颜徐州、鲍哲南： 你的皮肤可能是一片SPMs

CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

CCS Chemistry：静电组装导向聚合- 聚电解质纳米凝胶量化制备新策略

CCS Chemistry：金黄色葡萄球菌醛基脱氢酶是如何识别特异性底物的？

计量

文章相关

通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

CCS Chemistry：颜徐州、鲍哲南：你的皮肤可能是一片SPMs