Advances in Earth Science
• Articles •
Liu Weiguo，Peng Zicheng，Xiao Yingkai. BORON AND CHLORINE ISOTOPIC DETERMINATIONS AND APPLICATIONS FOR EARTH SCIENCES[J]. Advances in Earth Science, 1998, 13(6): 547-554.
Boron has two stable isotopes (11B and 10B), chlorine also has two stable isotopes (37Cl and 35Cl). The large different in mass ( 11 and 10, 35 and 37) make both boron and chlorine exist big isotopic fractionation in the nature. Variations of boron and chlorine isotopic compositions had not been found in early investigations due to poor precision of determing boron and chlorine. Since 1980s, with some high precise methods of determing boron and chlorine isotopes, the variations of boron and chlorine isotopes in nature have been evidenced by high precise determination and a lot of investigations. δ11B range from -30‰ to 60‰, and δ37Cl range from -2‰ to 7‰. Many significant work about boron and chlorine isotopic geochemistry have been maken in oceans, salt lakes, groundwater, evaporated sediment and hydrothermal fluids. This paper give a brief summary of including analytical methods and application in Earth sciences.