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Analysis of Mercury-Rich plants and mine tailings using the Hydride-Generation AAS method BABT
Moreno,Fábio Netto; Anderson,Christopher; Stewart,Robert; Robinson,Brett.
A hydride-generation atomic absorption spectroscopy (AAS) method was developed for the analysis of total Hg in liquid matrices of mercury-rich plants and mine tailings samples. The detection limit for this method was as low as 11.4 ng/mL. The reproducibility of the mercury signals (in terms of relative standard deviation) was 4.6%. Accuracy of the method was verified by analyses of deionised water samples spiked with HgCl2 and HgNO3. Recovery values for total mercury ranged from 88.5 to 94.3% for both mercury species added. An external certified laboratory validated the analytical method with a maximum discrepancy of 15 %. Optimal analytical response of the equipment for Hg analysis of plant samples was achieved when the sample volume added to the reaction...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Hydride-generation; Mercury; Plant and mine tailings; Sodium borohydride (NaBH4); Phytoextraction.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000400019
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