Accession Number : ADA296806

Title :   A Method for the Analysis of Rare Earth Elements in Natural Waters by Isotope Dilution Mass Spectrometry.

Descriptive Note : Technical rept.,

Corporate Author : WOODS HOLE OCEANOGRAPHIC INSTITUTION MA

Personal Author(s) : Schneider, David L. ; Palmieri, Julianne M.

PDF Url : ADA296806

Report Date : JAN 1994

Pagination or Media Count : 43

Abstract : A method is described to measure rare-earth elements (REE) in natural water samples. An iron hydroxide precipitation followed by ion exchange chromatography is used to concentrate and separate the REE from other matrix components. Additionally, the rare-earth elements themselves are separated into three fractions using an organic acid with a second cation column. Instrumental detection is by isotope dilution mass spectrometry (IDMS) using either thermal ionization mass spectrometry (TIMS) or inductively coupled plasma-mass spectrometry (ICP- MS). Excellent precision is shown by many duplicate and replicate analyses. Blanks are 1-2% or less of samples. (AN)

Descriptors :   *RARE EARTH ELEMENTS, *MASS SPECTROMETRY, THERMAL PROPERTIES, CATIONS, QUANTITATIVE ANALYSIS, DETECTION, IRON COMPOUNDS, PRECIPITATION, SAMPLING, ISOTOPES, CONCENTRATION(COMPOSITION), IONIZATION, NITRIC ACID, DILUTION, SEA WATER, HYDROXIDES, ION EXCHANGE, COLUMN CHROMATOGRAPHY, ORGANIC ACIDS, WATER ANALYSIS, ISOTOPE SEPARATION.

Subject Categories : Inorganic Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE