THE ATOMIC-WEIGHT OF EUROPIUM

被引：6

作者：

CHANG, TL ^{[1
]}

QIAN, QY ^{[1
]}

ZHAO, MT ^{[1
]}

WANG, J ^{[1
]}

机构：

[1] NATL RES CTR CERTIFIED REFERENCE MAT,BEIJING 100013,PEOPLES R CHINA

来源：

INTERNATIONAL JOURNAL OF MASS SPECTROMETRY AND ION PROCESSES | 1991年 / 103卷 / 2-3期

关键词：

D O I：

10.1016/0168-1176(91)80089-6

中图分类号：

O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];

学科分类号：

070203 ; 070304 ; 081704 ; 1406 ;

摘要：

Absolute isotopic abundances of europium in 12 samples from various origins were determined by using thermal ionization mass spectrometry. For this purpose, synthetic mixtures of independently known isotopic compositions prepared from chemically pure and nearly isotopically pure separated europium isotopes served to calibrate the mass spectrometer. The resulting true Eu-151/Eu-153 ratio is 0.90673 +/- 0.00235, which yields the mean isotopic abundances (47.554 +/- 0.065) at.% Eu-151 and (52.446 +/- 0.065) at.% Eu-153 at the 95% confidence limit. From these data and the relevant nuclidic masses the atomic weight of europium was calculated to be 151.9695 +/- 0.0013.

引用

页码：193 / 202

页数：10

共 8 条

[1] ISOTOPIC ABUNDANCES AND ATOMIC WEIGHTS OF THE ELEMENTS [J].

DEBIEVRE, P ;

GALLET, M ;

HOLDEN, NE ;

BARNES, IL .

JOURNAL OF PHYSICAL AND CHEMICAL REFERENCE DATA, 1984, 13 (03) :809-891

[2] THE ISOTOPIC CONSTITUTION OF EUROPIUM, GADOLINIUM, AND TERBIUM [J].

HESS, DC .

PHYSICAL REVIEW, 1948, 74 (07) :773-778

[3] CONTRIBUTION TO STUDY OF TEMPERATURE IN OKLO FOSSIL REACTORS BY MEASUREMENT OF LUTETIUM ISOTOPIC RATIO [J].

HOLLIGER, P ;

DEVILLERS, C .

EARTH AND PLANETARY SCIENCE LETTERS, 1981, 52 (01) :76-84

[4] ABSOLUTE ISOTOPIC ABUNDANCE RATIO AND ATOMIC WEIGHT OF A REFERENCE SAMPLE OF GALLIUM. [J].

Machlan, L.A. ;

Gramlich, J.W. ;

Powell, L.J. ;

Lambert, G.M. .

Journal of Research of the National Bureau of Standards (United States), 1986, 91 (06) :323-331

[5] ABSOLUTE ISOTOPIC COMPOSITION AND THE ATOMIC WEIGHT OF A NATURAL SAMPLE OF LITHIUM [J].

MICHIELS, E ;

DEBIEVRE, P .

INTERNATIONAL JOURNAL OF MASS SPECTROMETRY AND ION PROCESSES, 1983, 49 (02) :265-274

[6]

REN X, 1985, NEW FRONTIERS RARE E, V1, P39

[7] THE 1983 ATOMIC MASS EVALUATION .1. ATOMIC MASS TABLE [J].

WAPSTRA, AH ;

AUDI, G .

NUCLEAR PHYSICS A, 1985, 432 (01) :1-54

[8]

1986, PURE APPL CHEM, V58, P1677

← 1 →