Now showing items 1-10 of 1057
Electrodeposition of gold from formaldehyde-sulfite baths: bath stability and deposits characterization
(Sociedade Brasileira de Química, 2011)
It was investigated Au(I)-sulfite baths containing formaldehyde. As a result, high stability was achieved for baths containing formaldehyde concentration close to 10 mL L-1 with a lifetime superior to 600 days. On the other ...
Degradation of formaldehyde in anaerobic sequencing batch biofilm reactor (ASBBR)
(ELSEVIER SCIENCE BV, 2009)
The present study evaluated the degradation of formaldehyde in a bench-scale anaerobic sequencing batch reactor, which contained biomass immobilized in polyurethane foam matrices. The reactor was operated for 212 days at ...
A Simple and Green Analytical Method for the Determination of Formaldehyde
(Soc Brasileira Quimica, 2008-01-01)
A green spectrophotometric analytical method for determination of formaldehyde in commercial samples was designed and investigated. Replacement of hazardous reagents was explored to attain the clean chemistry standards. ...
Integrated retention/spectrophotometric detection method for the determination of formaldehyde
An integrated-sensor method for the determination of formaldehyde based on retention of the reaction product of the analyte with p-rosaniline and sulfite in a flow-cell packed with Dowex 1-X-8 anion exchange resin was ...
Parasitology of juvenile mullet (Mugil liza) and effect of formaldehyde on parasites and host
(Elsevier B.V., 2012-07-02)
Few studies have been performed with parasites of marine and estuarine fish in southern Brazil. In the present study, unpublished results show the ways of parasitism of juvenile mullet by parasites. The toxicity of ...
Histopathologic Changes of Rat Tracheal Mucosa Following Formaldehyde Exposure
(Sociedad Chilena de Anatomía, 2005)
Indoors lead corrosion: Reassessing the role of formaldehyde
(ELSEVIER SCIENCE BV, 2010)
The present work is focused on the role of formaldehyde in indoors Pb corrosion, that is still a controversial issue. Pb coupons were exposed to the atmosphere produced by formaldehyde aqueous solutions (1% and 4% in volume) ...
Spectrophotometric determination of formaldehyde with chromotropic acid in phosphoric acid medium assisted by microwave oven
(Elsevier B.V., 2004-05-01)
In the present study. a spectrophotometric method for the determination of formaldehyde by using chromotropic acid was devised. in which the use of potentially hazardous and corrosive concentrated sulfuric acid was eliminated ...
CONVERSION OF METHANOL TO FORMALDEHYDE ON TiO2 SUPPORTED Ag NANOPARTICLES
(Sociedad Chilena de Química, 2010)