Author/Authors :
Moraes، نويسنده , , Paula M. and Santos، نويسنده , , Felipe A. and Cavecci، نويسنده , , Bruna and Padilha، نويسنده , , Cilene C.F. and Vieira، نويسنده , , José C.S. and Roldan، نويسنده , , Paulo S. and Padilha، نويسنده , , Pedro de M. Rios and A. Ozorio de Almeida، نويسنده ,
Abstract :
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.
Keywords :
Permanent modifier , Amazon fish , Mercury in fish , GFAAS , Chemical modifier
