ID 57749
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Author
Hoang, Que D. The Pheasant Memorial Laboratory for Geochemistry and Cosmochemistry, Institute for Planetary Materials, Okayama University
Kunihiro, Tak The Pheasant Memorial Laboratory, Institute for Planetary Materials, Okayama University Kaken ID
Sakaguchi, Chie The Pheasant Memorial Laboratory for Geochemistry and Cosmochemistry, Institute for Planetary Materials, Okayama University publons
Yamanaka, Masahiro The Pheasant Memorial Laboratory for Geochemistry and Cosmochemistry, Institute for Planetary Materials, Okayama University
Kitagawa, Hiroshi The Pheasant Memorial Laboratory for Geochemistry and Cosmochemistry, Institute for Planetary Materials, Okayama University ORCID publons researchmap
Nakamura, Eizo The Pheasant Memorial Laboratory, Institute for Planetary Materials, Okayama University Kaken ID publons researchmap
Abstract
To precisely determine the abundances of fifty-two elements found within natural water samples, with mass fractions down to fg g(-1) level, we have developed a method which combines freeze-drying pre-concentration (FDC) and isotope dilution internal standardisation (ID-IS). By sublimation of H2O, the sample solution was reduced to < 1/50 of the original volume. To determine element abundance with accuracy better than 10%, we found that for solutions being analysed by mass spectrometry the HNO3 concentration should be > 0.3 mol l(-1) to avoid hydrolysis. Matrix-affected signal suppression was not significant for the solutions with NaCl concentrations lower than 0.2 and 0.1 cg g(-1) for quadrupole ICP-MS and sector field ICP-MS, respectively. The recovery yields of elements after FDC were 97-105%. The detection limits for the sample solutions prepared by FDC were <= 10 pg g(-1), except for Na, K and Ca. Blanks prepared using FDC were at pg-levels, except for eleven elements (Na, Mg, Al, P, Ca, Mn, Fe, Co, Ni, Cu and Zn). The abundances of fifty-two elements in bottled drinking water were determined from five different geological sources with mass fractions ranging from the fg g(-1) to mu g g(-1) level with high accuracy.
Keywords
pre-concentration
freeze-drying
ID-IS
natural water
drinking water
Published Date
2018-10-25
Publication Title
Geostandards and Geoanalytical Research
Volume
volume43
Issue
issue1
Publisher
Wiley
Start Page
147
End Page
161
ISSN
1639-4488
NCID
AA11984494
Content Type
Journal Article
language
英語
OAI-PMH Set
岡山大学
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author
DOI
Web of Science KeyUT
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isVersionOf https://doi.org/10.1111/ggr.12245