論文

査読有り
2018年1月5日

Lithium, magnesium and sulfur purification from seawater using an ion chromatograph with a fraction collector system for stable isotope measurements

Journal of Chromatography A
  • Toshihiro Yoshimura
  • ,
  • Daisuke Araoka
  • ,
  • Yusuke Tamenori
  • ,
  • Junichiro Kuroda
  • ,
  • Hodaka Kawahata
  • ,
  • Naohiko Ohkouchi

1531
開始ページ
157
終了ページ
162
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1016/j.chroma.2017.11.052
出版者・発行元
Elsevier B.V.

We describe the mass descrimination and validation of an offline method for purification of Li, Mg and S with an ion chromatograph coupled to an automated fraction collector for use prior to stable isotope measurements. Significant sub-fraction mass fractionation was observed for both the Li and the Mg stable isotope ratios. The lighter Li and heavier Mg isotopes were preferentially retained by the column, resulting in 7Li/6Li and 26Mg/24Mg biases up to 85.8‰ and 0.95‰, respectively. The isotopic compositions of Li, Mg, and S separated from seawater were δ7LiL-SVEC = +30.9‰, δ26MgDSM3 = −0.83 ± 0.10‰, and δ34SVCDT = +19.4 ± 0.6‰
each chromatographic peak was completely recovered, and the results were in good agreement with the published values regardless of whether or not chemical suppressor was used. The purification method enables multi-isotope analysis of a sample using various mass spectrometry techniques, such as multiple-collector inductively coupled plasma and thermal ionization mass spectrometry.

リンク情報
DOI
https://doi.org/10.1016/j.chroma.2017.11.052
PubMed
https://www.ncbi.nlm.nih.gov/pubmed/29198448
URL
http://www.scopus.com/inward/record.url?eid=2-s2.0-85036566059&partnerID=MN8TOARS
URL
http://orcid.org/0000-0001-5249-4995

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