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Single Column Sequential Extraction of Ra, Nd, Th, Pa and U from a Natural Sample
Author(s) -
Jeandel Catherine,
Venchiarutti Celia,
Bourquin Michael,
Pradoux Catherine,
Lacan François,
van Beek Pieter,
Riotte Jean
Publication year - 2011
Publication title -
geostandards and geoanalytical research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.037
H-Index - 73
eISSN - 1751-908X
pISSN - 1639-4488
DOI - 10.1111/j.1751-908x.2010.00087.x
Subject(s) - extraction (chemistry) , chromatography , sampling (signal processing) , detection limit , sample (material) , peristaltic pump , chemistry , analytical chemistry (journal) , mineralogy , physics , detector , optics , meteorology
A new procedure allowing the sequential extraction of Ra, Nd, Th, Pa and U from the same initial natural sample (sea or river waters, particles, sediments, rocks) is proposed. Extraction recoveries were better than 90%. Procedural blanks ranged from 80 pg (for Nd) to below 1 fg, the detection limit of the MC‐ICP‐MS used (for Pa); all were negligible compared with the amounts of elements currently determined. Based on classical anionic resins attached to a peristaltic pump allowing precise flow rate control, this procedure allowed a consequent reduction of the sample size, which improved the sampling resolution and reduced the sampling cost. It also ensured a better consistency of the samples for the five tracers.