Pseudo-total analysis for metallic elements in siliceous soil by acid digestion and flame atomic absorption spectrometry

Pseudo-total analysis (PTA) for metals in siliceous soil by atomic absorption spectrometry was carried out using digestion of siliceous soil with HNO 3/H 2O 2 and aqua regia. The dissolved silicate was found to interfere with the absorbance of Ca, Mg, Mn, Zn and Fe. No interference was found with Cu...

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Bibliographic Details
Published in:Analytica chimica acta 1999-09, Vol.396 (2), p.293-301
Main Authors: Hödrejärv, Helvi, Vaarmann, Aini
Format: Article
Language:English
Subjects:
Analysis methods
Analytical chemistry
Applied sciences
Atomic absorption spectrometry (AAS)
Chemistry
Exact sciences and technology
Metals
Pollution
Pseudo-total analysis (PTA)
Siliceous soil
Soil and sediments pollution
Spectrometric and optical methods
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Summary:Pseudo-total analysis (PTA) for metals in siliceous soil by atomic absorption spectrometry was carried out using digestion of siliceous soil with HNO 3/H 2O 2 and aqua regia. The dissolved silicate was found to interfere with the absorbance of Ca, Mg, Mn, Zn and Fe. No interference was found with Cu and Pb. The effect of silicate can be decreased by dilution of solutions and/or using lanthanum as the releasing element. The rate of release of various elements was studied.
ISSN:0003-2670
1873-4324
DOI:10.1016/S0003-2670(99)00480-8