MEASUREMENT OF CR(III) CR(VI) SPECIES BY WAVELENGTH MODULATION DIODE-LASER FLAME ATOMIC-ABSORPTION SPECTROMETRY/

Authors
GROLL H SCHALDACH G BERNDT H NIEMAX K
Citation
H. Groll et al., MEASUREMENT OF CR(III) CR(VI) SPECIES BY WAVELENGTH MODULATION DIODE-LASER FLAME ATOMIC-ABSORPTION SPECTROMETRY/, Spectrochimica acta, Part B: Atomic spectroscopy, 50(10), 1995, pp. 1293-1298
Citations number
16
Categorie Soggetti
Spectroscopy
Journal title
Spectrochimica acta, Part B: Atomic spectroscopy → ACNP
ISSN journal
05848547
Volume
50
Issue
10
Year of publication
1995
Pages
1293 - 1298
Database
ISI
SICI code
0584-8547(1995)50:10<1293:MOCCSB>2.0.ZU;2-7
Abstract
High-performance flow atomic spectrometry of Cr(LII) and Cr(VI) specie s by high-performance liquid chromatography (HPLC) separation, hydraul ic high-pressure nebulization (HHPN) for sample introduction and wavel ength modulation-laser atomic absorption spectrometry (WM-LAAS) with d iode lasers in an analytical flame is reported. 3 sigma detection limi ts of 0.5 and 1 ng ml(-1) have been obtained for Cr(VI) in deionized a nd drinking water, respectively. Due to relatively high blank levels, the corresponding detection limits of Cr(III) are higher than for Cr(V I), i.e. 1.6 ng ml(-1) in deionized water and 5 ng ml(-1) in drinking water.