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Use of microwave induced plasma spectrometry as detector for the determination of O, N and H traces after carrier gas hot extraction

  • The determination of O, N and H using a microwave induced plasma coupled to carrier gas hot extraction was exploratory investigated. The signal intensities versus time of blanks and calibration materials were recorded. To check for interferences the signal intensities versus wavelength were recorded at the times just before increase and at the maximum of the time dependent analytical signal. O, N and H were investigated at their prominent wavelengths of 777 nm, 174 nm and 486 nm, respectively. Calibration was performed for O, N and H in the ranges of 0–27 µg, 35–1000 µg and 3–43 µg respectively. For concentration values in the middle of the linear part of the investigated calibration interval, a relative precision of 5% at 13 µg, 2% at 74 µg and 0.6% at 23 µg for O, N and H respectively was found. The maximum matrix load to the plasma used was found to be 150 µg min-1. From the signal to noise ratio and the sensitivity obtained, instrumental limits of detection (3s) of 0.01 µg for O, 1The determination of O, N and H using a microwave induced plasma coupled to carrier gas hot extraction was exploratory investigated. The signal intensities versus time of blanks and calibration materials were recorded. To check for interferences the signal intensities versus wavelength were recorded at the times just before increase and at the maximum of the time dependent analytical signal. O, N and H were investigated at their prominent wavelengths of 777 nm, 174 nm and 486 nm, respectively. Calibration was performed for O, N and H in the ranges of 0–27 µg, 35–1000 µg and 3–43 µg respectively. For concentration values in the middle of the linear part of the investigated calibration interval, a relative precision of 5% at 13 µg, 2% at 74 µg and 0.6% at 23 µg for O, N and H respectively was found. The maximum matrix load to the plasma used was found to be 150 µg min-1. From the signal to noise ratio and the sensitivity obtained, instrumental limits of detection (3s) of 0.01 µg for O, 1 µg for N and 0.1 µg for H were found. Assuming a typical sample mass of 1 g this corresponds to relative LODs of 0.01 µg g-1, 1 µg g-1 and 0.1 µg g-1 for O, N and H respectively.zeige mehrzeige weniger

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Metadaten
Autor*innen:Heinrich Kipphardt, Michael Czerwensky, Ralf MatschatORCiD
Dokumenttyp:Zeitschriftenartikel
Veröffentlichungsform:Verlagsliteratur
Sprache:Englisch
Titel des übergeordneten Werkes (Englisch):Journal of analytical atomic spectrometry
Jahr der Erstveröffentlichung:2008
Verlag:Royal Society of Chemistry
Verlagsort:London
Jahrgang/Band:23
Ausgabe/Heft:4
Erste Seite:588
Letzte Seite:591
Freie Schlagwörter:Carrier gas hot extraction; Microwave induced plasma spectrometry; Non-metal determination
DOI:10.1039/B714734a
ISSN:0267-9477
ISSN:1364-5544
Verfügbarkeit des Dokuments:Physisches Exemplar in der Bibliothek der BAM vorhanden ("Hardcopy Access")
Bibliotheksstandort:Sonderstandort: Publica-Schrank
Datum der Freischaltung:19.02.2016
Referierte Publikation:Ja
Datum der Eintragung als referierte Publikation:17.04.2008
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