Extending the dynamic range of flame atomic absorption spectrometry: a comparison of procedures for the determination of several elements in milk and mineral waters using on-line dilution

1996 ◽  
Vol 355 (1) ◽  
pp. 57-64 ◽  
Author(s):  
I. López García ◽  
P. Viñas ◽  
N. Campillo ◽  
M. Hernández Córdoba
Keyword(s):  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Flame Atomic Absorption Spectrometry ◽  
Dynamic Range ◽  
Absorption Spectrometry ◽  
Mineral Waters ◽  
Flame Atomic Absorption ◽  
On Line

On-line preconcentration system for flame atomic absorption spectrometry using unloaded polyurethane foam: determination of zinc in waters and biological materials

1999 ◽  
Vol 14 (11) ◽  
pp. 1749-1753 ◽  
Author(s):  
Ricardo Jorgensen Cassella ◽  
Denise Teixeira Bitencourt ◽  
Aline Garcia Branco ◽  
Sérgio Luis Costa Ferreira ◽  
Djane Santiago de Jesus ◽  
...  
Keyword(s):  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Polyurethane Foam ◽  
Flame Atomic Absorption Spectrometry ◽  
Absorption Spectrometry ◽  
Biological Materials ◽  
Flame Atomic Absorption ◽  
On Line

scholarly journals Exploring potentialities of the HR-CS FAAS technique in the determination of Ni and Pb in mineral waters

2008 ◽  
Vol 33 (1) ◽  
pp. 49-56 ◽  
Author(s):  
V. R.. Amorim Filho ◽  
V. P. Franzini ◽  
J. A. Gomes Neto
Keyword(s):  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Flame Atomic Absorption Spectrometry ◽  
Natural Waters ◽  
Absorption Spectrometry ◽  
Mineral Waters ◽  
Continuum Source ◽  
Flame Atomic Absorption ◽  
Atomic Lines

National Health Surveillance Agency (ANVISA) established in the decree number 54 maximum allowed levels for Ni and Pb in mineral and natural waters at 20 µg L-1 and 10 µg L-1, respectively. For screening analysis purposes, the high-resolution continuum source flame atomic absorption spectrometry technique (HR-CS FAAS) was evaluated for the fast-sequential determination of nickel and lead in mineral waters.Two atomic lines for Ni (232.003 nm - main and 341.477 nm - secondary) and Pb (217.0005 nm - main and 283.306 nm - secondary) at different wavelength integrated absorbance (number of pixels) were evaluated. Sensitivity enhanced with the increase of the number of pixels and with the summation of the atomic lines absorbances. The main figures of merit associated to the HR-CS FAAS technique were compared with that obtained by line-source flame atomic absorption spectrometry (LS FAAS). Water samples were pre-concentrated about 5-fold by evaporation before analysis. Recoveries of Pb significantly varied with increased wavelength integrated absorbance. Better recoveries (92-93%) were observed for higher number of pixels at the main line or summating the atomic lines (90-92%). This influence was irrelevant for Ni, and recoveries in the 92-104% range were obtained in all situations.

Sign in / Sign up

Export Citation Format

Share Document