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Nas margens, no leito seco
(EDUFBA, 2013)
Kinetics of Cr(III) and Cr(VI) removal from water by two floating macrophytes
(Taylor & Francis, 2016-10)
The aim of this work was to compare Cr(III) and Cr(VI) removal kinetics from water by Pistia stratiotes and Salvinia herzogii. The accumulation in plant tissues and the effects of both Cr forms on plant growth were also ...
M??sica Popular e Adjac??ncias...
(EDUFBA, 2010)
Critical Influence of Culture Medium and Cr(III) Quantification Protocols on the Interpretation of Cr(VI) Bioremediation by Environmental Fungal Isolates
(Springer, 2010-02)
The influence of culture medium composition on chromium(VI) quantification according to diphenylcarbazide (DPC) colorimetric determination was evaluated. Considering the eventual biospeciation of Cr(VI) as a mechanism of ...
Ecophysiological responses of water hyacinth exposed to Cr(3+) and Cr(6+)
(PERGAMON-ELSEVIER SCIENCE LTD, 2009)
Due to its wide industrial use, chromium (Cr) is considered a serious environmental pollutant of aquatic bodies. in order to investigate the ecophysiological responses of water hyacinth [Eichhornia crassipes (Mart.) Solms] ...
Determination of Cr(VI) and Cr(III) species in parenteral solutions using a nanostructured material packed-microcolumn and electrothermal atomic absorption spectrometry
(Elsevier Gmbh, 2009-07)
A sequential on-line preconcentration and separation system for Cr(VI) and Cr(III) species determination was developed in this work. For this purpose, a microcolumn filled with nanostructured α-alumina was used for on-line ...
Cr(VI) and Cr(III) removal from aqueous solution by raw and modified lignocellulosic materials: a review
(Elsevier Science, 2010-08)
In aqueous systems, chromium usually exists in both trivalent and hexavalent oxidation states, being Cr(VI) of particular importance and concern due to its great toxicity. Industrial sources of Cr(VI) are leather tanning, ...
Redox and complexation chemistry of the Cr-VI/Cr-V-D-galacturonic acid system
(ROYAL SOC CHEMISTRY, 2004)
The oxidation of D-galacturonic acid by Cr-VI yields the aldaric acid and Cr-III as final products when a 30-times or higher excess of the uronic acid over Cr-VI is used. The redox reaction involves the formation of ...
Redox and complexation chemistry of the CrVI/CrV–d-galacturonic acid system
(2004)
The oxidation of D-galacturonic acid by Cr-VI yields the aldaric acid and Cr-III as final products when a 30-times or higher excess of the uronic acid over Cr-VI is used. The redox reaction involves the formation of ...
Distribution of chromium species in a Cr-polluted soil: Presence of Cr(III) in glomalin related protein fraction
(Elsevier Science, 2014-06)
The accumulation of Cr in soil could be highly toxic to human health; therefore Cr soil distribution was studied in rhizosphere soils from Ricinus communis and Conium maculatum and bare soil (BS) from an industrial and ...