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Determination of nitrogen forms and total nitrogen in petroleum reservoir rocks by steam distillation and the indophenol method
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- Several extractionprocedures are described for the determination of exchangeable and fixed ammonium,...
- doi：
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10.1590/S0100-40422006000100010
- 作 者：
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Henrique Junior, Sér...
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Quimica nova
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Evaluation of metal content in sediments of the Betari River in the Parque Estadual Turístico do Alto Ribeira: PETAR-, São Paulo, Brazil
- 摘要：
- The subsoil ofthe Vale do Ribeira was the focus of mining industries for the exploration oflead, mai...
- doi：
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10.1590/S0100-40422006000100009
- 作 者：
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Rezende, Maria Olímp...
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Quimica nova
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Spatial and seasonal variability of trace-element concentrations in sediments from the Santos-Cubatão estuarine system, São Paulo, Brazil
- 摘要：
- Multi-elementanalyses of sediment samples from the Santos-Cubat茫o Estuarine Systemwere carried out t...
- doi：
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10.1590/S0100-40422006000200016
- 作 者：
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Matos, Rosa Helena R...
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Quimica nova
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Determination of contaminants in used lubricating oils and in wastewater contamined by these lubricants
- 摘要：
- A simple and reliable ashing procedure is proposed for the preparation of usedlubricating oil sample...
- doi：
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10.1590/S0100-40422006000600009
- 作 者：
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Moura, Edmilson Mira...
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Quimica nova
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Effect of decaffeination using dichloromethane on the chemical composition of arabica and robusta raw and roasted coffees
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- The decaffeinatedcoffee market has been expanding increasingly in the last years. During decaffeinat...
- doi：
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10.1590/S0100-40422006000500015
- 作 者：
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Farah, Adriana;Trugo...
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Quimica nova
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Thermodynamic functions relative to the transfer of ketoprofen from water to some organic systems
- 摘要：
- The thermodynamicsof molal partitioning of ketoprofen (KTP) was studied in cyclohexane/buffer(CH/W),...
- doi：
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10.1590/S0100-40422006000400015
- 作 者：
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Lozano, Hernán R.;Ma...
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Quimica nova
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Preparative separation of flavonoids from the medicinal plant Davilla elliptica St. Hill. by high-speed counter-current chromatography
- 摘要：
- High-speed counter-currentchromatography (HSCCC) is a major tool for the fast separation of natural ...
- doi：
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10.1590/S0100-40422006000500011
- 作 者：
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Silva, Marcelo Apare...
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Quimica nova
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Construction and analytical applications of biosensors using different immobilization procedures of vegetable peroxidase on chitosan matrix
- 摘要：
- Biosensors weredeveloped by immobilization of gilo (Solanum gilo) enzymatic extracton chitosan biopo...
- doi：
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10.1590/S0100-40422006000500009
- 作 者：
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Oliveira, Inês Rosan...
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Quimica nova
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Chemistry literacy, planetary education and social inclusion
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- From the differentconceptions on scientific and technology literacy (STL), and reflections onglobali...
- doi：
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10.1590/S0100-40422006000300034
- 作 者：
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Santos, Wildson Luiz...
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Quimica nova
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Sources and levels of rain acidity in the region of the Rio Grande city, RS, Brazil
- 摘要：
- �
- doi：
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10.1590/S0100-40422000000500004
- 作 者：
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Baisch, Paulo;Mirlea...
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Quimica nova
