Stratospheric particles: Synchrotron x-ray fluorescence determination of trace element contents

Conference · Thu Jan 01 00:00:00 EST 1987

OSTI ID:6363848

Sutton, S R; Flynn, G J

The first trace element analyses on stratospheric particles using synchrotron x-ray fluorescence (SXRF) are reported. Cr, Mn, Fe, Ni, Cu, Zn, Ga, Ge, Se and Br were detected. Concentrations for chondritic particle U2022G1 are within a factor of 1.7 of CI for all elements detected with the exception of Br which is 37 times CI. Chondritic particle W7029*A27 is also near CI for Cr, Mn, Fe, Ni, Cu, Zn and Ge but enriched in Ga, Se, and Br by factors of 5.8, 3.5 and 8.4, respectively. The third particle of the cosmic dust class also showed high Br enriched relative to CI by a factor of 28. Br was also detected at a high level in an aluminum-rich particle classified as probable artificial terrestrial contamination but exhibiting a chondritic Fe/Ni ratio. Br was not detected in a fifth particle also classified terrestrial and exhibiting a crustal Fe/Ni ratio. If the high Br has a pre-terrestrial origin, the ubiquity of the effect suggests that a large fraction of the chondritic interplanetary dust particles derive from a parent body (bodies) not sampled in the meteorite collection. 26 refs., 3 figs., 3 tabs.

• Research Organization: Brookhaven National Lab., Upton, NY (USA); State Univ. of New York, Plattsburg (USA). Dept. of Physics
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 6363848
• Report Number(s): BNL-39991; CONF-870396-5; ON: DE87012482
• Resource Relation: Conference: Lunar and planetary science conference, Houston, TX, USA, 16 Mar 1987; Other Information: Portions of this document are illegible in microfiche products
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COSMIC DUST
X-RAY FLUORESCENCE ANALYSIS
BROMINE
CHROMIUM
COPPER
GALLIUM
GERMANIUM
IRON
MANGANESE
NICKEL
SELENIUM
TRACE AMOUNTS
ZINC
CHEMICAL ANALYSIS
DUSTS
ELEMENTS
HALOGENS
METALS
NONDESTRUCTIVE ANALYSIS
NONMETALS
SEMIMETALS
TRANSITION ELEMENTS
X-RAY EMISSION ANALYSIS
640107* - Astrophysics & Cosmology- Planetary Phenomena