DETERMINATION OF OS ISOTOPES AND RE/OS RATIOS USING AMS

被引：18
作者：
TENG, RTD
FEHN, U
ELMORE, D
HEMMICK, TK
KUBIK, PW
GOVE, HE
机构：
[1] ARGONNE NATL LAB,DIV ENVIRONM RES,ARGONNE,IL 60439
[2] UNIV ROCHESTER,NUCL STRUCT RES LAB,ROCHESTER,NY 14627
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 1987年 / 29卷 / 1-2期
基金：
美国国家科学基金会;
关键词：
D O I：
10.1016/0168-583X(87)90250-3
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
We report here results of recent determinations of osmium isotope ratios and rhenium/osmium ratios measured with AMS. Because Re forms negative atomic ions with a considerably lower efficiency than Os, Os isotopes can be determined with minimal isobaric interference at mass 187. Detection limits for AMS measurements of osmium are 20 ppb in chemically untreated samples and 0.01 ppb in samples where Os has been preconcentrated with a nickel sulfide method. The fact that Re and Os each form negative ions as oxides at a comparable rate has been used to determine Re Os ratios in untreated meteorite samples. © 1987.
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收藏
页码：281 / 285
页数：5
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