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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 ...
Spectrophotometric determination of glycolic acid with chromotropic acid assisted by microwave oven
(Editora Unesp, 2002-01-01)
In this work, a rapid, simple and selective spectrophotometric for the determination of glycolic acid is proposed, This method is based on selective reaction between the formaldehyde splitted off by the glycolic acid, which ...
Spectrophotometric determination of dipyrone in pharmaceutical preparations by using chromotropic acid
(Elsevier B.V., 1999-09-30)
A spectrophotometric method for the determination of dipyrone in pharmaceutical preparations is proposed. This method is based on selective oxidation of dipyrone, in the presence of sulphuric acid, splitting off formaldehyde ...
Spectrophotometric determination of dipyrone in pharmaceutical preparations by using chromotropic acid
(Elsevier B.V., 1999-09-30)
A spectrophotometric method for the determination of dipyrone in pharmaceutical preparations is proposed. This method is based on selective oxidation of dipyrone, in the presence of sulphuric acid, splitting off formaldehyde ...
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 ...
Chromotropic acid-formaldehyde reaction in strongly acidic media. The role of dissolved oxygen and replacement of concentrated sulphuric acid
(Elsevier B.V., 2003-05-28)
The procedure for formaldehyde analysis recommended by the National Institute for Occupational Safety and Health (NIOSH) is the Chromotropic acid spectrophotometric method, which is the one that uses concentrated sulphuric ...
Chromotropic acid-formaldehyde reaction in strongly acidic media. The role of dissolved oxygen and replacement of concentrated sulphuric acid
(Elsevier B.V., 2003-05-28)
The procedure for formaldehyde analysis recommended by the National Institute for Occupational Safety and Health (NIOSH) is the Chromotropic acid spectrophotometric method, which is the one that uses concentrated sulphuric ...