Inductively Coupled Plasma Atomic Emission Spectrometry – Accuracy of Analytical Results and Detection Limits in the Determination of Trace Elements in Soils and Sediments
 
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1
Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, Acad. G. Bontchev Str., bl. 11, 1113 Sofia, Bulgaria
2
Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bontchev Str., bl. 24, 1113 Sofia, Bulgaria
CORRESPONDING AUTHOR
Nonka N. Daskalova   

Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, Acad. G. Bontchev Str., bl. 11, 1113 Sofia, Bulgaria
Online publish date: 2007-10-01
Publish date: 2007-10-01
 
Eurasian J Anal Chem 2008;3(1):19–33
KEYWORDS
ABSTRACT
A radial viewing 40.68 MHz ICP equipped with a 1 m Czerny-Turner monochromator (practical bandwidth 5 pm in the 2-nd order from 160 to 320 nm) was used for the determination of As, Mn, Cu, Pb, Zn, Cr and Ba in soils and sediments. The quantification of spectral interferences in the presence of Al, Ca, Mg, Fe and Ti as matrix constituents was made by the Q-concept, as was proposed by Boumans and Vrakking. New spectral data with the above mentioned equipment were obtained. The aqua regia extraction procedure (ISO 11466) is widely used for most environmentally important heavy metals. In the present paper it was shown that the certified reference materials IAEA/Soil 7 and Lake Sediment IAEA/ SL-1 can be used for the experimental demonstration of the accuracy of analytical results obtained with the aqua regia dissolution procedure only for As, Mn, Cu and Pb. The elements Zn, Cr and Ba were silicate-bound species.
 
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