The role of intramolecular hydrogen bonding in the electrochemical behavior of hydroxy-quinones and in semiquinone stability
摘要：
The study of a selected group of a and b-hydroxyquinones ([a] 2-hydroxy-1,4-naphthoquinone 2HNQ, [b]...
doi：
10.1590/S0103-50532005000300002
作 者：
Frontana, Carlos;Gon...
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Journal of the Brazilian Chemical Society
HPLC method to assay total saponins in Ilex paraguariensis aqueous extract
摘要：
Ilex paraguariensis St. Hilaire is a South American tree from which leaves and twigs are used to pre...
doi：
10.1590/S0103-50532005000500007
作 者：
Schenkel, Eloir P.;U...
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期刊标题：
Journal of the Brazilian Chemical Society
A facile spectrophotometric method for the determination of periodate using azure B
摘要：
A simple, rapid and sensitive spectrophotometric method has been developed for the determination of ...
doi：
10.1590/S0103-50532005000600014
作 者：
Cherian, Tom;Narayan...
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Journal of the Brazilian Chemical Society
Interaction between humic substances and metallic ions: a selectivity study of humic substances and their possible therapeutic application
摘要：
The complexation capacity of humic substances extracted from peat samples taken from the Mogi River ...
doi：
10.1590/S0103-50532007000400023
作 者：
Rocha, Julio Cesar;B...
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期刊标题：
Journal of the Brazilian Chemical Society
Screening method for rapid determination of polychlorinated biphenyls in transformer oil by liquid-liquid extraction and gas chromatography-mass spectrometry
摘要：
A rapid and simple method was developed for screening polychlorinated biphenyls in transformer oil. ...
doi：
10.1590/S0103-50532007000500010
作 者：
Toledo, Carla;Valle,...
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期刊标题：
Journal of the Brazilian Chemical Society
Synthesis of macrocyclic polyazomethines
摘要：
The synthesis of 20-membered macrocyclic polyazomethine dyes 3a and 3b from 4,4'-dihydroxybiphenyl-3...
doi：
10.1590/S0103-50532007000600022
作 者：
Georgian Technical U...
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Journal of the Brazilian Chemical Society
Validation of immunoassay methods to determine hydrocarbon contamination in estuarine sediments
摘要：
The performance of two commercially available enzyme-linked immunosorbent assay (ELISA) kits (with a...
doi：
10.1590/S0103-50532007000400016
作 者：
Depledge, Michael H....
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期刊标题：
Journal of the Brazilian Chemical Society
Simultaneous voltammetric determination of dopamine and ascorbic acid using multivariate calibration methodology performed on a carbon paste electrode modified by a mer-[RuCl3(dppb)(4-pic)] complex
摘要：
The preparation and electrochemical characterization of a carbon paste electrode (CPE) modified with...
doi：
10.1590/S0103-50532007000100010
作 者：
Santos, Poliana M.;N...
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期刊标题：
Journal of the Brazilian Chemical Society
Identification and antioxidant activity of several flavonoids of Inga edulis leaves
摘要：
A methanol-water extract of Inga edulis leaves was fractionated to identify the polyphenolic compoun...
doi：
10.1590/S0103-50532007000600025
作 者：
Silva, Evaldo M.;Ins...
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期刊标题：
Journal of the Brazilian Chemical Society
Determination of rhodium and platinum by electrothermal atomic absorption spectrometry after preconcentration with a chelating resin
摘要：
The present publication describes a separation/preconcentration procedure for the subsequent trace a...
doi：
10.1590/S0103-50532007000600024
作 者：
Bosch Ojeda, C.;Sánc...
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期刊标题：
Journal of the Brazilian Chemical Society
