Preconcentration and purification of rare earth elements in natural waters using silica-immobilized 8-hydroxyquinoline and a supported organophosphorus extractant

Journal Article · Sun May 15 04:00:00 EDT 1994 · Analytical Chemistry (Washington); (United States)

DOI:https://doi.org/10.1021/ac00082a022· OSTI ID:7166302

Esser, B K; Volpe, A; Kenneally, J M; Smith, D K ^[1]

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1. Lawrence Livermore National Lab., CA (United States)

8-Hydroxyquinoline immobilized on silica gel (silica-8HQ) and RE-Spec, a supported organophosphorus extractant, were used to preconcentrate and purify rare earth elements (REEs) from natural waters prior to their determination by isotope-dilution inductivity coupled plasma mass spectrometry (ID-ICPMS). Preconcentration onto silica-8HQ is applicable to a wide range of trace metals, making it suitable for multielement ID-ICPMS studies. The silica-8HQ, RE-Spec technique concentrates REEs from 1 L or less of water into 1 mL of salt-free 0.1% nitric acid. The technique is rapid and has high REE yields (>80%) and low REE blanks (<2[minus]6 pg). In addition, Ba separation is high, allowing determination of La and Eu by ID-<300 pg of Ba is present in the final concentrates of sample solutions initially containing > 4 [mu]g of Ba. 24 refs., 2 figs., 4 tabs.

• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 7166302
• Journal Information: Analytical Chemistry (Washington); (United States), Journal Name: Analytical Chemistry (Washington); (United States) Vol. 66:10; ISSN 0003-2700; ISSN ANCHAM
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102 -- Chemical &amp; Spectral Procedures
400105* -- Separation Procedures
58 GEOSCIENCES
580000 -- Geosciences
ADSORBENTS
ALKALINE EARTH METAL COMPOUNDS
AROMATICS
AZAARENES
AZINES
BARIUM COMPOUNDS
CHEMISTRY
DATA
EUROPIUM COMPOUNDS
EXPERIMENTAL DATA
EXTRACTION
GEOCHEMISTRY
GROUND WATER
HETEROCYCLIC COMPOUNDS
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
INFORMATION
INORGANIC ACIDS
LANTHANUM COMPOUNDS
MASS SPECTROSCOPY
NITRIC ACID
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC PHOSPHORUS COMPOUNDS
OXINE
OXYGEN COMPOUNDS
PURIFICATION
PYRIDINES
QUINOLINES
RARE EARTH COMPOUNDS
SEAWATER
SEPARATION PROCESSES
SILICA GEL
SPECTROSCOPY
WATER