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Comparison of the methods to analyse mercury in soils from El Callao, Bolivar state, Venezuela


Comparison of the methods to analyse mercury in soils from El Callao, Bolivar state, Venezuela



Interciencia 27(4): 191-194



ISSN/ISBN: 0378-1844

Mercury levels in soil samples were determined by mineralization in aqua regia followed by cold vapour-atomic absorption spectrometry (CVAAS), and by direct determination on solid matrix by pyrolysis and preconcentration using an automatic mercury analyser AMA-254 (AMA). Hg concentration in samples were in the range of 0.05 to 17.31 mg/kg for CVAAS and of 0.050 to 20.060 mg/kg for AMA.

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