Measurement of 7Li/6Li Isotope Ratio Using Phase-Conjugate Degenerate Four-Wave Mixing in a Graphite Furnace

被引：3

作者：

Yin, Xunli ^{[1
]}

Cheng, Xuemei ^{[1
]}

Fei, Kun ^{[1
]}

Bai, Jintao ^{[1
]}

Ren, Zhaoyu ^{[1
]}

机构：

[1] NW Univ Xian, Inst Photon & Photon Technol, Int Collaborat Ctr Photoelect Technol & Nano Func, State Key Lab Incubat Base Photoelect Technol & F, Xian 710069, Peoples R China

来源：

IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS | 2015年 / 21卷 / 01期

关键词：

Phase-conjugate degenerate four-wave mixing; Lithium; Isotope ratio; ATOMIC-ABSORPTION SPECTROSCOPY; MASS-SPECTROMETRY; LITHIUM; SAMPLES;

D O I：

10.1109/JSTQE.2014.2329935

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

To obtain a Doppler-free resolution, we employ phaseconjugate degenerate four-wave mixing (PCDFWM) to isotope selectively analyze Li-6 and Li-7 in a graphite furnace atomizer. After the investigation of concentration and power dependences of PCDFWM, the optimal sample concentration and power conjugation are determined. Under the optimized conditions, we measured Li-7/Li-6 isotope ratio in Li standard solution with PCDFWM to be 11.571 +/- 0.003, which is in good agreement with the value calculated by atomic absorption spectroscopy but has a preferable resolution. The detection limit as 15.54 ng/mL is achieved. The information obtained from this paper suggests that PCDFWM is a reliable laser spectroscopic technique with high resolution in isotope ratiomeasurement and trace analysis for various applications such as geochemical exploration.

引用

页码：323 / 328

页数：6

共 20 条

[1] Ai B., 1996, J OPT SOC AM B, V13, P2406
[2] Toxicity of lithium to humans and the environment - A literature review
Aral, Hal
Vecchio-Sadus, Angelica
[J]. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY, 2008, 70 (03) : 349 - 356
[3] Significant Li isotope fractionation in geochemically evolved rare element-bearing pegmatites from the Little Nahanni Pegmatite Group, NWT, Canada
Barnes, Elspeth M.
Weis, Dominique
Groat, Lee A.
[J]. LITHOS, 2012, 132 : 21 - 36
[4] Quantitative measurement of rubidium isotope ratio using forward degenerate four-wave mixing
Cheng, Xuemei
Ren, Zhaoyu
Wang, Jian
Miao, Yizhu
Xu, Xinlong
Jia, Lajiang
Fan, Haiming
Bai, Jintao
[J]. SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY, 2012, 70 : 39 - 44
[5] Demtroder W., 2008, LASER SPECTROSCOPY B, P89
[6] Detailed velocity-dependent line shapes for degenerate four-wave mixing spectra in a two-level atomic system
Do, B
Elliott, DS
[J]. PHYSICAL REVIEW A, 2003, 67 (06): : 13
[7] Fan F., 2012, ATOMIC ENERGY SCI TE, V46, P35
[8] Lithium isotopes as a probe of weathering processes: Orinoco River
Huh, Y
Chan, LH
Edmond, JM
[J]. EARTH AND PLANETARY SCIENCE LETTERS, 2001, 194 (1-2) : 189 - 199
[9] NEARLY DEGENERATE 4-WAVE-MIXING WITH BICHROMATIC LASER FIELDS IN A RB ATOMIC SYSTEM
LIN, J
RUBIERA, AI
ZHU, YF
[J]. PHYSICAL REVIEW A, 1995, 52 (06): : 4882 - 4885
[10] New constraints on the lithium isotope compositions of the Moon and terrestrial planets
Magna, T
Wiechert, U
Halliday, AN
[J]. EARTH AND PLANETARY SCIENCE LETTERS, 2006, 243 (3-4) : 336 - 353

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