1999
Use of a single calibration graph for the determination of major elements in geological materials by laser ablation inductively coupled plasma atomic emission spectrometry with added internal standards
KANICKÝ, Viktor a Jean-Michel MERMETZákladní údaje
Originální název
Use of a single calibration graph for the determination of major elements in geological materials by laser ablation inductively coupled plasma atomic emission spectrometry with added internal standards
Autoři
KANICKÝ, Viktor (203 Česká republika, garant) a Jean-Michel MERMET (250 Francie)
Vydání
Fresenius Journal of Analytical Chemistry, Berlin, Springer-Verlag, 1999, 0937-0633
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10406 Analytical chemistry
Stát vydavatele
Německo
Utajení
není předmětem státního či obchodního tajemství
Impakt faktor
Impact factor: 1.428
Kód RIV
RIV/00216224:14310/99:00000870
Organizační jednotka
Přírodovědecká fakulta
UT WoS
000078731000016
Klíčová slova anglicky
Laser ablation; Inductively coupled plasma atomic emission spectrometry; geology; silicates; carbonates; fused pellets; lithiummetaborate; internal standards
Štítky
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 29. 6. 2007 10:01, prof. RNDr. Viktor Kanický, DrSc.
V originále
The possibility of internal standardisation in laser ablation inductively coupled plasma atomic emission spectrometry (LA-ICP-AES) of geological materials by added Sc2O3 and Y2O3 has been examined to cover the wide range of concentrations of major and minor constituents both in silicate rocks and limestones. A Nd:YAG laser (355 nm, 10 Hz, 10 mJ per shot) was used for the ablation of discs obtained by fusion of the mixture of samples and oxides of Sc and Y with lithium tetraborate. The flux/sample ratio was in the range from 6 to 10. The contents of analytes were within the concentration range from hundredths to tens of percentage. The trace elements copper and nickel were studied, too. An ICP emission spectrometer OPTIMA 3000 DV was used for the measurement of Si, Al, Ca, Mg, Sr, Ba. Fe, Ti, Mn, Ni, Cu. Na and K analyte lines and Y and Sc reference lines in the axial observation mode. The long-term and the short-term repeatability of measurement were improved by employing scandium or yttrium internal references lines for the above analytes from 6% to 1.5% of RSD and from 2.4% to 1.0% of RSD, respectively. The correlation of signals with concentrations was improved in terms of the correlation coefficient r from 0.90-0.97 to 0.98-0.998 and the relative uncertainty on the centroid of concentrations was improved 2-3 times. A single calibration graph covering the concentration range both in silicates and carbonates is possible for each of elements. as the matrix effects are compensated for by internal standards and the excess of Li2B4O7.
Česky
The possibility of internal standardisation in laser ablation inductively coupled plasma atomic emission spectrometry (LA-ICP-AES) of geological materials by added Sc2O3 and Y2O3 has been examined to cover the wide range of concentrations of major and minor constituents both in silicate rocks and limestones. A Nd:YAG laser (355 nm, 10 Hz, 10 mJ per shot) was used for the ablation of discs obtained by fusion of the mixture of samples and oxides of Sc and Y with lithium tetraborate. The flux/sample ratio was in the range from 6 to 10. The contents of analytes were within the concentration range from hundredths to tens of percentage. The trace elements copper and nickel were studied, too. An ICP emission spectrometer OPTIMA 3000 DV was used for the measurement of Si, Al, Ca, Mg, Sr, Ba. Fe, Ti, Mn, Ni, Cu. Na and K analyte lines and Y and Sc reference lines in the axial observation mode. The long-term and the short-term repeatability of measurement were improved by employing scandium or yttrium internal references lines for the above analytes from 6% to 1.5% of RSD and from 2.4% to 1.0% of RSD, respectively. The correlation of signals with concentrations was improved in terms of the correlation coefficient r from 0.90-0.97 to 0.98-0.998 and the relative uncertainty on the centroid of concentrations was improved 2-3 times. A single calibration graph covering the concentration range both in silicates and carbonates is possible for each of elements. as the matrix effects are compensated for by internal standards and the excess of Li2B4O7.
Návaznosti
| GA203/94/0511, projekt VaV |
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