Determinação de metais pesados em leite integral bovino pasteurizado no estado de Goiás
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Data
2008-06
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Editor
José Henrique Stringhini
Resumo
The lead texts, cadmium, zinc, copper and iron in
pasteurized integral bovine milk produced in the months
of September of 2003 to December of 2004, in the
large regions of the State of Goiás, they were analysed
using spectrometry of atomic absorption with flame.
Adopting the approach established in the statistical
annual of the State of Goiás, of the Clerkship of the
Planning (SEPLAN, 2004), that it divided the State of
Goiás in five large regions, they were picked 27 samples
of integral milk pasteurizade in each large region; with
a total of 135 samples, and 675 analytic determinations
for the five analyzed elements. Following the statistical
model of sampling for conglomerate (SPIEGEL, 1978),
it was picke samples in municipal districts with larger
production milkmaid, so that they were representative
for the State. The samples obtained in plastic packings of
polietileno pigmentad, they were processed immediately,
acomplishingt the physical-chemical analyses of routine
initially to evaluate its quality. After the evaluation of the
sample, it separated those that were in agreement with
the physical-chemical patterns, and the determination of
the metals was proceded by spectrophotometry of atomic absorption, according to official methodology (BRASIL,
1994). In relation to the obtained results, the were not
found significant differences at 5 % of probability,
among the averages of the lead texts, cadmium, zinc and
copper in the integral milk, among several large regions.
Contaminations were detected by lead and cadmium. The
general average obtained for lead was of 0,238 mg/L, for
the cadmium it was of 0,0482 mg/L, the medium texts
of zinc 3,732 mg/L, copper 0,4869 mg/L and iron was of
0,9626 mg/L. Tends in view the medium resulted obtained
in the present study, depreend-if that the analyzed milk, is
a poor source in zinc, copper and iron. In relation to the
results obtained for lead, in all the large regions of the
State of Goiás samples of milk contaminated.
Descrição
Palavras-chave
Espectrofotometria de absorção atômica, Chumbo, Microelementos, Spectrophotometry of atomic absorption, Lead, Microelements
Citação
GONÇALVES, José Rubens; MESQUITA, Albenones José de; GONÇALVES, Renata Moreira. Determinação de metais pesados em leite integral bovino pasteurizado no estado de Goiás. Ciência Animal Brasileira, Goiânia, v. 9, n. 2, p. 365-374, abr./jun. 2008. Disponível em: <https://www.revistas.ufg.br/vet/article/view/4238/3712>.