Determination of Abundances of Fifty-Two Elements in Natural Waters by ICP-MS with Freeze-Drying Pre-concentration

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1 Citation (Scopus)

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 μg g−1 level with high accuracy.

Original languageEnglish
JournalGeostandards and Geoanalytical Research
DOIs
Publication statusAccepted/In press - Jan 1 2018

Fingerprint

freeze drying
Drying
Water
water
Sublimation
sublimation
standardization
Isotopes
Drinking Water
Standardization
Dilution
hydrolysis
Hydrolysis
dilution
drinking water
isotope
Recovery
matrix

Keywords

  • drinking water
  • freeze-drying
  • ID-IS
  • natural water
  • pre-concentration

ASJC Scopus subject areas

  • Geology
  • Geochemistry and Petrology

Cite this

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title = "Determination of Abundances of Fifty-Two Elements in Natural Waters by ICP-MS with Freeze-Drying Pre-concentration",
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 μg g−1 level with high accuracy.",
keywords = "drinking water, freeze-drying, ID-IS, natural water, pre-concentration",
author = "Hoang, {Que D.} and Takuya Kunihiro and Chie Sakaguchi and Masahiro Yamanaka and Hiroshi Kitagawa and Eizou Nakamura",
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T1 - Determination of Abundances of Fifty-Two Elements in Natural Waters by ICP-MS with Freeze-Drying Pre-concentration

AU - Hoang, Que D.

AU - Kunihiro, Takuya

AU - Sakaguchi, Chie

AU - Yamanaka, Masahiro

AU - Kitagawa, Hiroshi

AU - Nakamura, Eizou

PY - 2018/1/1

Y1 - 2018/1/1

N2 - 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 μg g−1 level with high accuracy.

AB - 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 μg g−1 level with high accuracy.

KW - drinking water

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KW - pre-concentration

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