High-precision measurement of oceanic 226Ra

Peter Schlosser, Monika Rhein, Wolfgang Roether, Bernd Kromer

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


A system capable of oceanic 226Ra measurements with a precision of ±1% is described, which represents an improvement of approximately a factor of three over existing techniques. 222Rn grown-in from 226Ra decay in 14-l seawater samples is quantitatively transferred to, and measured in, proportional gas counters. Errors other than counting statistics are estimated not to exceed ±0.5%, which is consistent with repeated 226Ra measurements on the same samples. A NE Atlantic 226Ra depth profile (2000-5000 m) is reported as an example. It is found that with the precision reported here, certain hitherto unresolved features of the 226Ra distribution in deep water become apparent.

Original languageEnglish (US)
Pages (from-to)203-216
Number of pages14
JournalMarine Chemistry
Issue number3
StatePublished - Dec 1984
Externally publishedYes

ASJC Scopus subject areas

  • Oceanography
  • Chemistry(all)
  • Environmental Chemistry
  • Water Science and Technology


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