[PDF] Top 20 J. Braz. Chem. Soc. vol.14 número4
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J. Braz. Chem. Soc. vol.14 número4
... Considerando a importância histórica de alguns pes- quisadores no desenvolvimento e difusão da área de Eletroquímica e Eletroanalítica no cenário Brasileiro, a comissão organizadora do S[r] ... See full document
4
J. Braz. Chem. Soc. vol.14 número4
... The present work is devoted to study the corrosion behavior of iron and AISI 304 stainless steel in neutral aqueous solutions of tungstate containing chloride ions, by using open circuit[r] ... See full document
7
J. Braz. Chem. Soc. vol.14 número4
... Silva, Nivaldo Baccan and Joaquim A.[r] ... See full document
1
J. Braz. Chem. Soc. vol.14 número4
... For small molecules as pesticides, drugs and hormones, the competitive measurement is needed in order to achieve measurable changes of frequency; the analyte is mixed with antibody to fo[r] ... See full document
12
J. Braz. Chem. Soc. vol.14 número4
... The effect of increasing the concentration of formal- dehyde is to cause an increase in the value of q nf . This increase is initially linear, but at higher concentrations this tendency can be seen to tail off (Figure ... See full document
6
J. Braz. Chem. Soc. vol.14 número4
... By comparing the diffusion coefficient values for Fc oxidation from the oil phase and for water from droplets in the ME, it is observed that D Fc is, respectively, 60 and 40 times highe[r] ... See full document
9
J. Braz. Chem. Soc. vol.14 número4
... The electrochemical properties of Pani(DMcT-Cu ion)/carbon fiber composites, obtained by electrochemical means, are analysed as a function of the preparation procedure and the different [r] ... See full document
7
J. Braz. Chem. Soc. vol.14 número4
... Cadmium and cyanide percent extraction and current efficiency depend on the applied current density and the total removal of the ionic species is limited by a cadmium compound precipitat[r] ... See full document
6
J. Braz. Chem. Soc. vol.14 número4
... studying the spontaneous deposition of ruthenium on Pt(111) have concluded that the coverage degree does not reach higher values because of a significant presence of ruthenium oxides in [r] ... See full document
9
J. Braz. Chem. Soc. vol.14 número4
... Sorption coefficients of pesticides are important parameters because they play an important role on the fate of pesticides in the environment and therefore they are relevant to assess the risk of ground or surface water ... See full document
7
J. Braz. Chem. Soc. vol.14 número4
... The lower k value for the AZ91HP-alloy is one reason for its better corrosion resistance, compared to magnesium, since in the case of pitting, about 50% of the anodic current was compe[r] ... See full document
10
J. Braz. Chem. Soc. vol.14 número4
... So we tested the voltammetric method to assay the triazines with artificial HD and HS samples spiked with a ten-fold excess of the contaminants found in the dialysis water and also in th[r] ... See full document
7
J. Braz. Chem. Soc. vol.14 número4
... corrosion behaviour of Al alloys covered with Ce conversion coatings, however, it seems that the results obtained by these authors are more linked to the thickening of the Al oxide layer[r] ... See full document
9
J. Braz. Chem. Soc. vol.14 número4
... These results suggest that the cathodic peak current i pc (II) results from the reduction of a product formed by the reaction between citrate and some product formed during DA oxidation [r] ... See full document
6
J. Braz. Chem. Soc. vol.14 número4
... Figure 4a shows that the first oxide formed on the surface are small nuclei while Figure 4b shows how at higher oxidation potentials the semiconducting properties of the oxide layer indu[r] ... See full document
7
J. Braz. Chem. Soc. vol.14 número4
... When the Fe (II) concentration (at a 10:1 ratio) increased, the cathodic peak shifted to a more negative potential than with other solution ratios and its current contribution increased.[r] ... See full document
8
J. Braz. Chem. Soc. vol.14 número4
... 16. After prolonged electro-reduction, the PTFE case was ob- served to turn black where the mesh touched the PTFE. This is attributed to the reduction of carbon-fluorine bonds of PTFE to yield surface carbon - see ... See full document
7
J. Braz. Chem. Soc. vol.14 número4
... The slopes of these plots, when linear, can be combined with known film thickness and amount of electroactive species incorporated (obtained by coulometric integration of CV peaks under [r] ... See full document
6
J. Braz. Chem. Soc. vol.14 número4
... In opposition to the electrochemical reaction of hydrogen, the oxidation of methanol requires special attention due to the difficulty in splitting the molecule, adsorbed at the catalyst [r] ... See full document
7
J. Braz. Chem. Soc. vol.14 número4
... This work describes the development and optimization of a SWV method for the determination of 4-NP in pure water using a boron-doped diamond electrode as well as a comparison of the resu[r] ... See full document
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