Optimization and validation of a methodology to determine total arsenic, As(III) and As(V), in water samples, through graphite furnace atomic absorption spectrometry

Santos, Lísia Maria Gobbo dos; Jacob, Silvana do Couto

doi:10.1590/s0101-20612009000100019

Cited by 3 publications

(1 citation statement)

References 6 publications

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“…The samples were digested by dry ashing in porcelain containers by adding 10 ml of concentrated HNO 3 and 5 ml Mg(NO 3 ) 2 (9% solution, w/v) . The mixture was first maintained over a hot plate until dryness and then in muffle furnace at 450 C for 12 h. The residue was dissolved in 0.5 ml of HNO 3 (10% solution, v/v) and transferred to a 14 ml volumetric polypropylene tube and completed with deionized water (Santos & Jacob, 2009). …”

Section: Sample Preparationmentioning

confidence: 99%

Determination of inorganic trace elements in edible marine fish from Rio de Janeiro State, Brazil

et al. 2012

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a b s t r a c tFish and seafood may represent risk for human health since they can accumulate contaminants from aquatic environment and magnify them up the food chain. The purpose of this study was to analyze and evaluate the levels of aluminum, zinc, iron, manganese, cobalt, copper, arsenics, selenium, cadmium, barium, lead and bismuth in 11 fish species (Salmo salar, Sardinella brasiliensis, Pomatomus saltatrix, Micropogonias furnieri, Cynoscion leiarchus, Caranx crysos, Priacanthus arenatus, Mugil cephalus, Genypterus brasiliensis, Lopholatilus villarii and Pseudopercis numida) captured at Rio de Janeiro State Coast, Brazil. Concentration ranges (mg kg À1 of wet weight) of the selected elements were compared with those reported in other studies. In some cases, comparison of certain elements in the same fish species was difficult due to the lack of data. Aluminum concentration was significantly high in all samples and only M. cephalus, C. leiarchus e C. crysos presented arsenic concentrations below 1 mg kg À1 , limit recommended by Brazilian legislation.

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Section: Sample Preparationmentioning

confidence: 99%