Título:	Determination of nitrate in lettuce by ion chromatography after microwave water extraction.
Autoria:	NOVAES, H. B. VAITSMAN, D. S. DUTRA, P. B. PEREZ, D. V.
Afiliação:	HUMBERTO BREVILATO NOVAES, UFRJ; DELMO SANTIAGO VAITSMAN, UFRJ; PAULO BECHARA DUTRA, UFRJ; DANIEL VIDAL PEREZ, CNPS.
Ano de publicação:	2009
Referência:	Química Nova, São Paulo, v. 32, n. 6, p. 1647-1650, 2009.
Conteúdo:	Lettuce is worldwide known as the most important vegetable. In this context, most farmers are searching new techniques for best quality products including hydropony. However, nitrate is of great concern, since it has a negative impact on human metabolism. The main objective of the present work was to evaluate the nitrate content of lettuce produced by conventional and hydroponic systems. The determination was conducted by ion chromatography and a new method of extraction was tested using microwave oven digestion. The results indicated that nitrate level produced in the conventional system was lower than in the hydroponic system.
Thesagro:	Cromatografia
Palavras-chave:	Chromatrography
Digital Object Identifier:	https://doi.org/10.1590/S0100-40422009000600049
Tipo do material:	Artigo de periódico
Acesso:	openAccess
Aparece nas coleções:	Artigo em periódico indexado (CNPS)