Teor de nitrato e nitrito em vegetais cultivados no distrito federal: um estudo preliminar

Susanne  Rath; Maria L N.  Ximenes; Felix G.R.  Reyes

doi:10.53393/rial.1994.54.35706

Vol. 54 No. 2 (1994), ORIGINAL ARTICLE

Vol. 54 No. 2 (1994)

Nitrate and Nitrate in vegetable cultived at Distrito Federal: preliminary study

ORIGINAL ARTICLE

https://doi.org/10.53393/rial.1994.54.35706

Published 1994-12-30

Susanne Rath⁺⁻
Maria L N. Ximenes⁺⁻
Felix G.R. Reyes⁺⁻

Susanne Rath

Departamento de Química, Universidade de Brasília - Brasília, DF

Maria L N. Ximenes

Instituto de Saúde do Distrito Federal - Brasília, DF

Felix G.R. Reyes

Faculdade de Engenharia de Alimentos, Universidade Estadual de Campinas

pdf (Português (Brasil))

Keywords

Nitrite and Nitrite in vegetable
Lettuce
Spinach
Cabbage

How to Cite

1.

Rath S, Ximenes MLN, Reyes FG. Nitrate and Nitrate in vegetable cultived at Distrito Federal: preliminary study. Rev Inst Adolfo Lutz [Internet]. 1994 Dec. 30 [cited 2024 May 17];54(2):126-30. Available from: https://periodicos.saude.sp.gov.br/RIAL/article/view/35706

Abstract

Nitrate and nitrite were determined in samples of lettuce, cabbage and
spinach produced at the region of the Distrito Federal. Nitrite was determined by the method of Follett & RatcIiff, spectrophotometric determination at 474 nm of the diazo compound formed after reaction of nitrite with sulphanilic acid and l-naphtol. Nitrate was similarIy determined after is reduction to nitrite by using a cadmium column. Of 26 samples analyzed,
84% presented a leveI of nitrate over than 500 mg/kg and 58% greater than 1000 mg/kg. The highest value of nitrate was 2881 mg/kg obtained in a sample of cabbage. Nitrite was not detected in any of the samples analyzed. The Iimit of determination of the method was 20 mglkg and 16 mglkg for sodium nitrate, respectively.

https://doi.org/10.53393/rial.1994.54.35706

pdf (Português (Brasil))

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