A method for the analysis of rare earth elements in natural waters by isotope dilution mass spectrometry
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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 ar separated into the 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.
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The determination of rare earth elements in marine sediments by ion-exchange separation and ICP emission spectrometry Schneider, David L.; Bankston, Donald C. (Woods Hole Oceanographic Institution, 1987-12)A method has been developed to measure rare-earth elements (REE) in gram-sized marine sediment samples. A strong acid digestion technique followed by ion-exchange chromatography is used to solubilize, separate, and purify ...
Sen, Indra S.; Peucker-Ehrenbrink, Bernhard (2012-07)The extent to which humans are modifying Earth’s surface chemistry can be quantified by comparing total anthropogenic element fluxes with their natural counterparts (Klee & Graedel, 2004). We quantify anthropogenic mass ...
Baar, Hein J. W. de (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1983-09)Novel methods were developed for the determination of 12 of the 14 Rare Earth Elements (REE) in seawater. Initial extractions of the REE by chelating ion exchange chromatography is followed by cation exchange for removal ...