Otro
Manganese determination by GFAAS in feces and fish feed slurries
Registro en:
Journal of the Brazilian Chemical Society, v. 18, n. 6, p. 1235-1241, 2007.
0103-5053
1678-4790
10.1590/S0103-50532007000600019
S0103-50532007000600019
WOS:000251216400019
2-s2.0-36148996184.pdf
2-s2.0-36148996184
Autor
Loureiro, Vanessa Rosa
Saleh, Mayra A. D.
Moraes, Paula M.
Neves, Renato C. F.
Silva, Fabio A.
Padilha, Cilene C. F.
Padilha, Pedro de Magalhães
Resumen
This paper presents a simple, fast and sensitive method to determine manganese in samples of feces and fish feed by graphite furnace atomic absorption spectrometry (GFAAS) by the direct introduction of slurries into the graphite tube. The limits of detection (LOD) and quantification (LOQ) calculated for 20 readings of the blank of the standard slurries (0.50 % m/v of feces or feed devoid of manganese) were 28 and 92 μg kg-1 for the standard feces slurries and 34 and 110 μg kg-1 for the standard feed slurries. The proposed method was applied in bioavailability studies of manganese in different fish feeds and their results proved compatible with those obtained for samples mineralized by acid digestion using microwave oven. ©2007 Sociedade Brasileira de Química.