US EPA

2278507 

Journal Article 

Simultaneous determination of mercury and antimony in lead-base alloys by hydride generation-double channel atomic fluorescence spectrometry with solid-phase extraction using amberlite XAD-16 resin micro-column 

Zhang, W; Duan, T 

2014 

Yes 

Asian Journal of Chemistry
ISSN: 0970-7077
EISSN: 0975-427X 

26 

1 

219-223 

English 

10.14233/ajchem.2014.15704 

WOS:000330294400050 

The simultaneous determination of inorganic mercury and antimony was evaluated by the application in lead-base alloys through solid-phase extraction (SPE) coupled with hydride generation-double channel atomic fluorescence spectrometry (HG-DC-AFS) using a separation/preconcentration step on an Amberlite XAD-16 resin packed column. The high selective SPE was based on the similar properties between non-polar resins and molecular covalent compounds e.g., HgBr2 and SbBr3 formed in concentrated H2SO4 and HBr media. Various experimental conditions affecting the solid-phase extraction and determination of the analytes had been investigated. Under the optimized conditions, the limits of detection of 0.17 μg L-1 for Hg(II) and 1.66 μg L-1 for Sb(III) were obtained. The precisions (RSD) for seven replicate measurements of 20 μg L-1 Hg(II) and Sb(III) were 0.37 and 2.9 %, respectively. The developed method was validated by spike test and was applied to the separation/preconcentration of Hg and Sb from two lead-base alloys matrices. 

Hydride generation; Solid-phase extraction; Atomic fuorescence spectrometry; XAD-16 resin