TY - JOUR
T1 - High-precision measurement of oceanic 226Ra
AU - Schlosser, Peter
AU - Rhein, Monika
AU - Roether, Wolfgang
AU - Kromer, Bernd
N1 - Funding Information:
We are grateful to W.S. Broecker, Palisades, L.H. Chan, Baton Rouge, and P. Brewer, Woods Hole, for letting us use unpublished 226Ra data of GEOSECS Sta. 111, and Ba and Si data of FS "Meteor" Sta. 501, respectively. G. Mathieu, Palisades, provided the 226Ra standards. The participation in the FS "Meteor" cruise No. 56 was funded by the Deutsche Forschungs-gemeinschaft. We acknowledge the efforts of the institute's workshop, in particular those of R. Fletterer and H. Mantsch, in the development and
PY - 1984/12
Y1 - 1984/12
N2 - 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.
AB - 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.
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U2 - 10.1016/0304-4203(84)90018-5
DO - 10.1016/0304-4203(84)90018-5
M3 - Article
AN - SCOPUS:48549111252
SN - 0304-4203
VL - 15
SP - 203
EP - 216
JO - Marine Chemistry
JF - Marine Chemistry
IS - 3
ER -