My watch list
my.chemeurope.com  
Login  

Antimony speciation in road dust and urban particulate matter in Valparaiso, Chile: Analytical and environmental considerations

Publication date:

September 2013


Source:Microchemical Journal, Volume 110

Author(s): Waldo Quiroz , Marisol Cortés , Francisco Astudillo , Manuel Bravo , Francisco Cereceda , Víctor Vidal , María Gabriela Lobos

In this study we develop an analytical methods for the determination of total Sb, Sb(V) and Sb(III) in road dust and airborne particulate matter (APM) by HPLC-HG-AFS. For total Sb determination, samples were digested with 6mL of HNO3 and 2mL of HBF4 in closed microwave digestion system at 200°C in 30min, trueness was determined by using APM certified reference material NIST 1648a. For Sb(V) and Sb(III) determination, oxalic acid 100mmolL-1 in 1% w/v ascorbic acid at 70°C in closed vessel microwave extraction was chosen as extraction procedure. Analytical methods were applied to airborne particulate matter (<10μm), and road dust (< 37μm) samples. An enrichment of antimony from 4 to 10 times higher was detected in road dust in Valparaiso, Chile, which correlates with the enrichment reported by our group in 2009 in the blood. On the other hand up to 70% of total antimony extracted from road samples was Sb(III) indicating an anthropogenic origin of this element.




Authors:   Author(s): Waldo Quiroz , Marisol Cortés , Francisco Astudillo , Manuel Bravo , Francisco Cereceda , Víctor Vidal , María Gabriela Lobos
Journal:   Microchemical Journal
Year:   2013
DOI:   10.1016/j.microc.2013.04.006
Publication date:   27-May-2013
More about Elsevier
Your browser is not current. Microsoft Internet Explorer 6.0 does not support some functions on Chemie.DE