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Spectrophotometric titrations of acid-base systems using flower extracts containig anthocyanins
- 摘要:
- Considering the attraction of the students'attention by the changes in the colors of vegetable crude...
- doi:
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10.1590/S0100-40422007000400045
- 作 者:
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Cortes, Mônica Souza...
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Quimica nova
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Spatial distribution of iron, copper and lead in mangrove sediments in a degradation gradient in Guanabara Bay (Rio de Janeiro State)
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- Iron, copper andlead distribution was evaluated in sediment cores from a disturbed mangrovearea in G...
- doi:
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10.1590/S0100-40422007000100015
- 作 者:
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Machado, Wilson;Patc...
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Quimica nova
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Practical in organometallic chemistry: preparation of dicarbonylcyclopentadienyliron(II) chloride
- 摘要:
- In this work, wedescribe a new method for obtaining [Fe(CO)2[(h5-C5H5)Cl]employing simple techniques...
- doi:
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10.1590/S0100-40422007000200045
- 作 者:
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Vasconcellos, Suzan ...
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Quimica nova
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Carotenoids: properties, applications and biotransformation in flavor compounds
- 摘要:
- Carotenoids arewidely distributed in nature, providing yellow, orange or red color in a greatnumber ...
- doi:
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10.1590/S0100-40422007000300022
- 作 者:
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Uenojo, Mariana;Maró...
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Quimica nova
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Alkaline battery: a useful device in the teaching of chemistry
- 摘要:
- This paper presents the alkaline battery (MnO2/Zn)as a useful device in the teaching of chemistry. T...
- doi:
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10.1590/S0100-40422007000400046
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Quimica nova
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Ecomaterials: development and application of functional porous materials for environmental protection
- 摘要:
- Fundamental aspectsof the conception and applications of ecomaterials, in particular porous material...
- doi:
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10.1590/S0100-40422007000200039
- 作 者:
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Ferreira, Odair Past...
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Quimica nova
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Validation of analytical methodology for simultaneous evaluation of mebendazole and thiabendazole in tablets by high performance liquid chromatography
- 摘要:
- The aim of this work was to develop and validatean analytical methodology for simultaneous determina...
- doi:
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10.1590/S0100-40422007000500050
- 作 者:
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Sena, Marcelo M.;Pau...
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Quimica nova
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Contents of synthetic dyes in foods determined by high performence liquid chromatography
- 摘要:
- Synthetic dyesare much used in processed foods. HPLC was applied to different types of snacks,such a...
- doi:
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10.1590/S0100-40422007000200005
- 作 者:
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Prado, Marcelo Alexa...
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Quimica nova
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Microbiological oxidative dissolution of a complex mineral sample containing pyrite (FeS2), pyrrotite (Fe1-xS) and molybdenite (MoS2)
- 摘要:
- This work aims to study the oxidation of a complexmolybdenite mineral which contains pyrite and pyrr...
- doi:
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10.1590/S0100-40422007000500008
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Quimica nova
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Use of Blue Rayon for the extraction/concentration of polycyclic compounds in the aquatic environment
- 摘要:
- This is a reviewabout the use of Blue rayon in the extraction and concentration of environmentalcont...
- doi:
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10.1590/S0100-40422006000300022
- 作 者:
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Umbuzeiro, Gisela de...
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Quimica nova