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Titolo:
MEASUREMENT OF BORON ISOTOPE RATIOS IN GROUNDWATER STUDIES
Autore:
PORTEOUS NC; WALSH JN; JARVIS KE;
Indirizzi:
UNIV LONDON,ROYAL HOLLOWAY & BEDFORD NEW COLL,DEPT GEOL EGHAM TW20 0EX SURREY ENGLAND UNIV LONDON IMPERIAL COLL SCI & TECHNOL,CARE,NERC,ICP MS FACIL ASCOT SL5 7TE BERKS ENGLAND
Titolo Testata:
Analyst
fascicolo: 5, volume: 120, anno: 1995,
pagine: 1397 - 1400
SICI:
0003-2654(1995)120:5<1397:MOBIRI>2.0.ZU;2-2
Fonte:
ISI
Lingua:
ENG
Soggetto:
PLASMA MASS-SPECTROMETRY;
Keywords:
BORON ISOTOPES; INDUCTIVELY COUPLED PLASMA MASS SPECTROMETRY; ION EXCHANGE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
8
Recensione:
Indirizzi per estratti:
Citazione:
N.C. Porteous et al., "MEASUREMENT OF BORON ISOTOPE RATIOS IN GROUNDWATER STUDIES", Analyst, 120(5), 1995, pp. 1397-1400

Abstract

Boron is present at low levels in groundwater and rainfall in the UK,ranging between 2 and 200 ng ml(-1). A sensitive technique has been developed using inductively coupled plasma mass spectrometry (ICP-MS) to measure boron isotope ratios at low concentrations with a precision (s(r)) of between 0.1 and 0.2%, Samples were evaporated to increase elemental boron concentrations to 200 ng ml(-1) and interfering matrix elements were removed by an adapted cation-exchange separation procedure. The validity of measuring boron isotopic ratios by ICP-MS at this concentration level is discussed in relation the theoretical instrumentprecision attainable based on counting statistics. Using the developed procedure it is possible to use ICP-MS to establish a reliable database documenting the natural variation in boron isotope compositions inaquifers and rain water in the UK. Preliminary results demonstrate a trend in boron isotopic compositions with increasing boron concentration. The method may be used to evaluate possible levels of boron pollution from anthropogenic inputs into natural aqueous systems.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 06/07/20 alle ore 07:10:51