Determination of Trace Lanthanides and Yttrium in Seawater by Inductively Coupled Plasma Mass Spectrometry after Preconcentration with Solvent Extraction and Back-Extraction

Mohammad B. Shabani, Tasuku Akagi, Hiroshi Shimizu, Akimasa Masuda

Research output: Contribution to journalArticle

200 Citations (Scopus)

Abstract

A method for the analysis of sub parts per trillion levels of rare-earth elements (REEs) and yttrium (Y) In seawater after preconcentration with solvent extraction and back-extraction has been developed. Almost perfect extraction and back-extraction of all REE and Y were achieved by single extraction, and most of the matrix elements were removed during the extraction procedure. Even after 200-fold preconcentration, matrix problems by I CP-MS measurement were negligible. Contamination from reagents and water used during the pretreatment was below 1% of the concentration of REE and Y in seawater. The standard deviation obtained for triplicate separation of 100- and 1000-mL samples of the same seawater was better than 5% for all REE. The average precision of the measurement for all REE and Y after preconcentration of 1000 mL of raw seawater to 5 mL of final measurement solution was calculated to be less than 2.5 %. Since there is no standard seawater sample for REE and Y, in order to evaluate this novel technique, the analytical results obtained by this method were compared with those obtained by isotope dilution mass spectrometry coupled with Fe coprecipitation. The comparison indicated the good accuracy of the present method. Sample preparation and measurement could be carried out within 30 min for every sample. Two internal standard elements, In and Cd were used to check sample loss during the extraction and back-extraction procedures and to control the possible matrix effect and instrument fluctuation.

Original languageEnglish
Pages (from-to)2709-2714
Number of pages6
JournalAnalytical Chemistry
Volume62
Issue number24
DOIs
Publication statusPublished - Dec 15 1990
Externally publishedYes

Fingerprint

Yttrium
Inductively coupled plasma mass spectrometry
Lanthanoid Series Elements
Solvent extraction
Seawater
Rare earth elements
Coprecipitation
Isotopes
Dilution
Mass spectrometry
Contamination
Water

All Science Journal Classification (ASJC) codes

  • Analytical Chemistry

Cite this

Determination of Trace Lanthanides and Yttrium in Seawater by Inductively Coupled Plasma Mass Spectrometry after Preconcentration with Solvent Extraction and Back-Extraction. / Shabani, Mohammad B.; Akagi, Tasuku; Shimizu, Hiroshi; Masuda, Akimasa.

In: Analytical Chemistry, Vol. 62, No. 24, 15.12.1990, p. 2709-2714.

Research output: Contribution to journalArticle

@article{2c844da4c6f44099a143a604bcc37067,
title = "Determination of Trace Lanthanides and Yttrium in Seawater by Inductively Coupled Plasma Mass Spectrometry after Preconcentration with Solvent Extraction and Back-Extraction",
abstract = "A method for the analysis of sub parts per trillion levels of rare-earth elements (REEs) and yttrium (Y) In seawater after preconcentration with solvent extraction and back-extraction has been developed. Almost perfect extraction and back-extraction of all REE and Y were achieved by single extraction, and most of the matrix elements were removed during the extraction procedure. Even after 200-fold preconcentration, matrix problems by I CP-MS measurement were negligible. Contamination from reagents and water used during the pretreatment was below 1{\%} of the concentration of REE and Y in seawater. The standard deviation obtained for triplicate separation of 100- and 1000-mL samples of the same seawater was better than 5{\%} for all REE. The average precision of the measurement for all REE and Y after preconcentration of 1000 mL of raw seawater to 5 mL of final measurement solution was calculated to be less than 2.5 {\%}. Since there is no standard seawater sample for REE and Y, in order to evaluate this novel technique, the analytical results obtained by this method were compared with those obtained by isotope dilution mass spectrometry coupled with Fe coprecipitation. The comparison indicated the good accuracy of the present method. Sample preparation and measurement could be carried out within 30 min for every sample. Two internal standard elements, In and Cd were used to check sample loss during the extraction and back-extraction procedures and to control the possible matrix effect and instrument fluctuation.",
author = "Shabani, {Mohammad B.} and Tasuku Akagi and Hiroshi Shimizu and Akimasa Masuda",
year = "1990",
month = "12",
day = "15",
doi = "10.1021/ac00223a012",
language = "English",
volume = "62",
pages = "2709--2714",
journal = "Analytical Chemistry",
issn = "0003-2700",
publisher = "American Chemical Society",
number = "24",

}

TY - JOUR

T1 - Determination of Trace Lanthanides and Yttrium in Seawater by Inductively Coupled Plasma Mass Spectrometry after Preconcentration with Solvent Extraction and Back-Extraction

AU - Shabani, Mohammad B.

AU - Akagi, Tasuku

AU - Shimizu, Hiroshi

AU - Masuda, Akimasa

PY - 1990/12/15

Y1 - 1990/12/15

N2 - A method for the analysis of sub parts per trillion levels of rare-earth elements (REEs) and yttrium (Y) In seawater after preconcentration with solvent extraction and back-extraction has been developed. Almost perfect extraction and back-extraction of all REE and Y were achieved by single extraction, and most of the matrix elements were removed during the extraction procedure. Even after 200-fold preconcentration, matrix problems by I CP-MS measurement were negligible. Contamination from reagents and water used during the pretreatment was below 1% of the concentration of REE and Y in seawater. The standard deviation obtained for triplicate separation of 100- and 1000-mL samples of the same seawater was better than 5% for all REE. The average precision of the measurement for all REE and Y after preconcentration of 1000 mL of raw seawater to 5 mL of final measurement solution was calculated to be less than 2.5 %. Since there is no standard seawater sample for REE and Y, in order to evaluate this novel technique, the analytical results obtained by this method were compared with those obtained by isotope dilution mass spectrometry coupled with Fe coprecipitation. The comparison indicated the good accuracy of the present method. Sample preparation and measurement could be carried out within 30 min for every sample. Two internal standard elements, In and Cd were used to check sample loss during the extraction and back-extraction procedures and to control the possible matrix effect and instrument fluctuation.

AB - A method for the analysis of sub parts per trillion levels of rare-earth elements (REEs) and yttrium (Y) In seawater after preconcentration with solvent extraction and back-extraction has been developed. Almost perfect extraction and back-extraction of all REE and Y were achieved by single extraction, and most of the matrix elements were removed during the extraction procedure. Even after 200-fold preconcentration, matrix problems by I CP-MS measurement were negligible. Contamination from reagents and water used during the pretreatment was below 1% of the concentration of REE and Y in seawater. The standard deviation obtained for triplicate separation of 100- and 1000-mL samples of the same seawater was better than 5% for all REE. The average precision of the measurement for all REE and Y after preconcentration of 1000 mL of raw seawater to 5 mL of final measurement solution was calculated to be less than 2.5 %. Since there is no standard seawater sample for REE and Y, in order to evaluate this novel technique, the analytical results obtained by this method were compared with those obtained by isotope dilution mass spectrometry coupled with Fe coprecipitation. The comparison indicated the good accuracy of the present method. Sample preparation and measurement could be carried out within 30 min for every sample. Two internal standard elements, In and Cd were used to check sample loss during the extraction and back-extraction procedures and to control the possible matrix effect and instrument fluctuation.

UR - http://www.scopus.com/inward/record.url?scp=11944268054&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=11944268054&partnerID=8YFLogxK

U2 - 10.1021/ac00223a012

DO - 10.1021/ac00223a012

M3 - Article

AN - SCOPUS:11944268054

VL - 62

SP - 2709

EP - 2714

JO - Analytical Chemistry

JF - Analytical Chemistry

SN - 0003-2700

IS - 24

ER -