Showing papers by "Eizo Nakamura published in 1992"

TL;DR: In this paper, a new technique for boron chemical separation and isotopic analysis in natural silicate rocks and waters is described, where sample dissolution and the subsequent ion-exchange chromatography were conducted using hydrofluoric and hydrochloric acids in the presence of mannitol which suppresses borone volatilization and isotope fractionation by the formation of a boroni-mannitol complex.

TL;DR: In this article, boron content and δ11B values were determined for the uppermost 1.3 km section of typical 6.2 Ma oceanic crust from DSDP/ODP Hole 504B, Costa Rica Rift, Galapagos Spreading Center.