Determination of nitrate in lettuce by ion chromatography after microwave water extraction
| Autor: | Humberto Brevilato Novaes, Daniel Vidal Pérez, Paulo Bechara Dutra, Delmo Santiago Vaitsman |
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| Přispěvatelé: | HUMBERTO BREVILATO NOVAES, UFRJ, DELMO SANTIAGO VAITSMAN, UFRJ, PAULO BECHARA DUTRA, UFRJ, DANIEL VIDAL PEREZ, CNPS. |
| Předmět: |
Chromatrography
ion chromatography Chromatography Microwave oven Ion chromatography Extraction (chemistry) hydropony Context (language use) Water extraction microwave extraction General Chemistry Hydroponics lcsh:Chemistry chemistry.chemical_compound Nitrate chemistry lcsh:QD1-999 Cromatografia Microwave |
| Zdroj: | Scopus-Elsevier Química Nova, Vol 32, Iss 6, Pp 1647-1650 (2009) Química Nova v.32 n.6 2009 Química Nova Sociedade Brasileira de Química (SBQ) instacron:SBQ Química Nova, Volume: 32, Issue: 6, Pages: 1647-1650, Published: 2009 Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA-Alice) Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA |
| Popis: | 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. Made available in DSpace on 2018-10-24T00:35:00Z (GMT). No. of bitstreams: 1 DanielRevistaQuimicaNova.pdf: 225910 bytes, checksum: 06bcebca756a2e07a347739e30adde97 (MD5) Previous issue date: 2010-04-20 |
| Databáze: | OpenAIRE |
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