Data/hora: 07/06/2024 14:14:50

Biblioteca(s): 	Embrapa Solos.	
Data corrente: 	20/04/2010	
Data da última atualização: 	01/11/2021	
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.	
Título: 	Determination of nitrate in lettuce by ion chromatography after microwave water extraction.	
Ano de publicação: 	2009	
Fonte/Imprenta: 	Química Nova, São Paulo, v. 32, n. 6, p. 1647-1650, 2009.	
DOI: 	https://doi.org/10.1590/S0100-40422009000600049	
Idioma: 	Inglês	
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.	
Palavras-Chave: 	Chromatrography.	
Thesagro: 	Cromatografia.	
Categoria do assunto: 	P Recursos Naturais, Ciências Ambientais e da Terra	
URL: 	http://ainfo.cnptia.embrapa.br/digital/bitstream/item/184915/1/Daniel-Revista-Quimica-Nova.pdf	
Registro original: 	Embrapa Solos (CNPS)	
Exemplares: 	CNPS - (14813-1) - UPC - AP - DD -  -  - 2010.00029 - DIS