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Takeuchi, Toshio; Watanabe, Takeshi; OGINO, Chinkichi; Saito, Minoru; NISHIMURA, Kazuhisa; Nose, Takeshi

doi:10.2331/suisan.47.645

Cited by 45 publications

(1 citation statement)

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“…The eggs produced by broodstock of brook trout and rainbow trout fed fish meal diets lacking manganese contained only low levels of this trace metal and subsequently hatchability was poor. [6][7][8][9] So, the development of new methodologies that allow the reliable quantification of the metallic nutrients such as manganese, present at low concentrations in feeds, becomes fundamental in fish nutrition studies. In this context, the determination of metallic analytes in slurries by graphite furnace atomic absorption spectrometry shows that it is a robust technique.…”

Section: Introductionmentioning

confidence: 99%

Manganese determination by GFAAS in feces and fish feed slurries

Loureiro¹,

Saleh²,

Moraes³

et al. 2007

J. Braz. Chem. Soc.

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Neste trabalho, um método simples, rápido e sensível, é proposto para determinação de manganês em amostras de fezes e rações de peixes por espectrometria de absorção atômica em forno de grafite (GFAAS) utilizando-se a introdução direta de suspensões das amostras no tubo de grafite. Os limites de detecção (LOD) e de quantificação (LOQ) calculados em relação a 20 leituras do branco das suspensões (0,50 % m/v de fezes ou ração isentas de manganês) foram de 28 e 92 μg kg -1 para as suspensões padrão de fezes e de 34 e 110 μg kg -1 para as suspensões padrão de ração. O método proposto foi aplicado em estudos de biodisponibilidade de manganês em diferentes amostras de rações de peixes e os resultados mostraram-se de acordo com os resultados obtidos utilizando-se amostras previamente mineralizadas por digestões ácidas em forno de microondas. 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.

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Section: Introductionmentioning

confidence: 99%