The isotopic composition of anthropogenic boron and its potential impact on the environment.

Journal Article (Review;Journal Article)

The present study investigates the isotopic composition of anthropogenic boron (B) and its potential affects on the environment. The isotopic ratios of B in synthetic products from the main ores in the world have been measured by negative thermal ionization mass spectrometry. The data show that the isotopic compositions of Na-borate products and washing powders overlap with those of natural Na-borate minerals. In contrast, the 11B/10B ratios of synthetic Ca-borate and Na/Ca borate products are significantly lower (by 15 permil) and overlap with those of the natural Ca-borate minerals. Consequently, the original isotopic signature of natural borate minerals is not modified during the manufacturing process of synthetic products. The B isotopic composition of domestic wastewater from Israel and Riverside, California suggests that B in sewage is derived from Na-borate components used in detergents. Since B, like other inorganic ions, is not removed during conventional sewage treatment, it accumulates in domestic wastewater. Although the B concentration in pristine groundwaters is generally low (<0.05 mg/L), contaminant sources (e.g., wastewater) are relatively enriched in B (0.5-1 mg/L). The isotopically distinguished signature of borate compounds is used to trace groundwater contamination.

Full Text

Duke Authors

Cited Authors

  • Vengosh, A

Published Date

  • January 1998

Published In

Volume / Issue

  • 66 / 1-3

Start / End Page

  • 145 - 151

PubMed ID

  • 10050916

Pubmed Central ID

  • 10050916

Electronic International Standard Serial Number (EISSN)

  • 1559-0720

International Standard Serial Number (ISSN)

  • 0163-4984

Digital Object Identifier (DOI)

  • 10.1007/bf02783134

Language

  • eng