Artigo
GFAAS determination of mercury in muscle samples of fish from Amazon, Brazil
Fecha
2013-06-27Registro en:
Food Chemistry, v. 141, n. 3, p. 2614-2617, 2013.
0308-8146
1873-7072
10.1016/j.foodchem.2013.05.008
WOS:000326766700141
2-s2.0-84879249576
2-s2.0-84879249576.pdf
3589137264364456
0000-0001-7264-3396
Autor
Universidade Estadual Paulista (Unesp)
Universidade Federal de Alagoas (UFAL)
Faculdade de Planaltina Distrito Federal
Universidade Estadual de Campinas (UNICAMP)
Resumen
In the present study, a simple, rapid and sensitive method was developed for the determination of mercury concentrations in the muscle tissue of fish from the Brazilian Amazon using graphite furnace atomic absorption spectrometry (GFAAS) following acid mineralization of the samples in an ultrasonic cold water bath. Using copper nitrate as a chemical modifier in solution and sodium tungstate as permanent modifier, we were able to attain thermal stabilization of the mercury up to the atomisation temperature of 1600 °C in the GFAAS assay. The calculated limits of detection (LOD) and quantification (LOQ) were 0.014 and 0.047 mg kg-1, respectively. © 2013 Elsevier Ltd. All rights reserved.