Topic
Isotopes of boron
About: Isotopes of boron is a research topic. Over the lifetime, 1040 publications have been published within this topic receiving 21139 citations.
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TL;DR: In this paper, negative thermal ionization mass spectrometry was used to analyze the boron isotopic compositions of modern marine carbonates with a 2σ reproducibility of standards and samples better than 0.7%.
576 citations
TL;DR: In this article, the single-stage separation factor for boron isotopes between an ion exchange resin and an external solution was determined, using an ion-exchange breakthrough operation.
Abstract: The single-stage separation factors for boron isotopes between an ion-exchange resin and an external solution were determined, using an ion-exchange breakthrough operation. The lighter isotope boron-10 was considerably enriched in the anion-exchange resin phase. The separation factor was very much influenced by the boric acid concentration in the external solution, but not as much influenced by the kind of the anion exchange resin used and operation temperature. The separation factor increased with a decrease in the boric acid concentration of external solution from 1.008 (0.501 mol/l) to 1.016 (0.010 mol/l). The value of the separation factors obtained experimentally were compared with those estimated on the basis of the theory of the two-phase distribution of isotopes.
385 citations
TL;DR: In this article, the boron isotope equilibrium constant (11 − 10 K B ) was determined empirically from the difference in the dissociation constants of 11 − 10 B(OH) 3 and 10 − 3 in pure water, 0.6 − 1 H 2 O KCl and artificial seawater.
351 citations
TL;DR: It is shown that δ 11 B values of raw and treated sewage effluents from the Dan Region Sewage Reclamation Project overlap those of natural nonmarine sodium borate minerals but differ significantly from those of regional uncontaminated groundwater and seawater.
Abstract: Boron isotope composition and concentration of sewage effluent and pristine and contaminated groundwater from the Coastal Plain aquifer of Israel have been determined. The application of boron compounds, especially sodium perborate as a bleaching agent in detergents, leads to an enrichment of boron in wastewaters. Anthropogenic boron in wastewater is isotopically distinct from natural boron in groundwater and thus can be utilized to identify the source of contamination. It is shown that δ 11 B (where δ 11 B=[(( 11 B/ 10 B)sample/( 11 B/ 10 B) NBS-951S -1]×1000) values of raw and treated sewage effluents from the Dan Region Sewage Reclamation Project (δ 11 B=5.3-2.9‰) overlap those of natural nonmarine sodium borate minerals (0.9‰ to +10.2‰) but differ significantly from those of regional uncontaminated groundwater (∼30‰) and seawater (39‰)
311 citations
Journal Article•
278 citations