Boron isotopic compositions of brine, sediments, and source water in Da Qaidam Lake, Qinghai, China

Journal Article · Tue Mar 31 23:00:00 EST 1992 · Geochimica et Cosmochimica Acta; (United States)

DOI:https://doi.org/10.1016/0016-7037(92)90225-8· OSTI ID:5299204

Xiao, Yingkai; Sun, Dapeng; Wang, Yunhui; Qi, Haiping; Jin, Lin ^[1]

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1. Academia Sinica, Qinghai (China)

The isotopic compositions of boron in Da Qaidam Lake, Quinghai, have been determined by using the technique of thermal ionization mass spectrometry of cesium tetraborate. The brines are enriched in {sup 11}B, with an average {delta}{sup 11}B of +5.49 {plus minus} 2.34{per thousand}, compared with those of lake sediments and boron minerals produced by the lake. The apparent isotopic fractionation factors between brine and lake sediments as well as boron minerals are 0.988 {plus minus} 0.001 and 0.986 {plus minus} 0.001, respectively. Source water {delta}{sup 11}B values range from {minus}11.72 to +16.69{per thousand}, depending on their origin.

• OSTI ID: 5299204
• Journal Information: Geochimica et Cosmochimica Acta; (United States), Journal Name: Geochimica et Cosmochimica Acta; (United States) Vol. 56:4; ISSN GCACA; ISSN 0016-7037
• Country of Publication: United States
• Language: English

Related Subjects

58 GEOSCIENCES
580000* -- Geosciences
ASIA
BORON ISOTOPES
BRINES
CHEMICAL COMPOSITION
CHEMISTRY
CHINA
COMPARATIVE EVALUATIONS
EVALUATION
EVAPORITES
GEOCHEMISTRY
ISOTOPE RATIO
ISOTOPES
LAKES
MASS SPECTROSCOPY
QUANTITY RATIO
ROCKS
SEDIMENTARY ROCKS
SEDIMENTS
SPECTROSCOPY
SURFACE WATERS
WATER CHEMISTRY