A METHOD FOR 231PA ANALYSIS BY THERMAL IONIZATION MASS SPECTROMETRY IN SILICATE ROCKS

dc.contributor.author	Bourdon B.
dc.contributor.author	Joron J.L.
dc.contributor.author	Allegre C.J.
dc.date.accessioned	2021-01-09T02:42:59Z
dc.date.available	2021-01-09T02:42:59Z
dc.date.issued	1999
dc.identifier	https://elibrary.ru/item.asp?id=127891
dc.identifier.citation	Chemical Geology, 1999, , 1, 147-151
dc.identifier.issn	0009-2541
dc.identifier.uri	https://repository.geologyscience.ru/handle/123456789/22394
dc.description.abstract	We describe a new technique for analyzing 231Pa in silicate rocks by isotope dilution mass spectrometry. This technique is different from the technique developed by previous studies () and also permits the determination of down to a 100 fg of 231Pa with a 1-2% uncertainty at the 2σ level. While its performance is comparable to the LANL technique (), a number of modifications may help extend the application of 231Pa-235U to a wider number of geochemistry labs: (1) this technique does not require 237Np, a hazardous α-emitter for 233Pa spike preparation, (2) Pa is run as a double-oxide on a tungsten filament with a sensitivity comparable to the metal method.
dc.subject	PROTACTINIUM
dc.subject	MASS SPECTROMETRY
dc.subject	ISOTOPE DILUTION
dc.title	A METHOD FOR 231PA ANALYSIS BY THERMAL IONIZATION MASS SPECTROMETRY IN SILICATE ROCKS
dc.type	Статья

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