Determination of 129I in vegetation using alkaline ashing separation combined with AMS measurement and variation of vegetation iodine isotopes in Qinling Mountains

Yanyun Wang, Xiaolin Hou*, Yukun Fan, Luyuan Zhang, Qi Liu

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

An analytical method was developed for determination of 129I and 127I in vegetation samples. Iodine in the sample was separated by alkaline ashing followed by water leaching and solvent extraction. Up to 20 samples per batch and more than 20 g of each sample can be analyzed. A detection limit of 3.0 × 10−17 g/g for 129I was achieved. Grass samples collected from Xi’an and the sites in Qinling Mountains with 20–120 km distance to Xi’an city were successfully analyzed to investigate the effect of the sampling distance to the city on the level of 127I and 129I.

Original languageEnglish
JournalJournal of Radioanalytical and Nuclear Chemistry
Volume326
Pages (from-to)1457–1466
ISSN0236-5731
DOIs
Publication statusPublished - 2020

Keywords

  • Accelerator mass spectrometry
  • Alkaline ashing
  • Iodine-129
  • Vegetation

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