Spectrophotometric methods for assaying total mercaptans, reduced
申请人:Oxis International S.A.
公开号:US05817520A1
公开(公告)日:1998-10-06
According to the invention, the total mercaptans in an aqueous sample are assayed by means of the formation of a chromophoric substitution product between all the mercaptans present in the sample and a reagent corresponding to the general formula I: ##STR1## Reduced glutathione (GSH) is assayed in the form of a chromophoric thione formed specifically by alkalization from the substitution product formed above between GSH and the reagent. The concentration of mercaptans distinct from GSH is obtained by subtraction of the concentrations obtained in the preceding assays. Application to the assay of mercaptans and GSH, especially in the presence of other mercaptans, in particular in biological media.
PROCEDES SPECTROPHOTOMETRIQUES DE DOSAGE DES MERCAPTANS TOTAUX, DU GLUTATHION REDUIT (GSH) ET DES MERCAPTANS AUTRES QUE LE GSH DANS UN MILIEU AQUEUX, REACTIFS ET NECESSAIRES POUR LEUR MISE EN UVRE
申请人:BIOXYTECH
公开号:EP0643698A1
公开(公告)日:1995-03-22
PROCEDES SPECTROPHOTOMETRIQUES DE DOSAGE DES MERCAPTANS TOTAUX, DU GLUTATHION REDUIT (GSH) ET DES MERCAPTANS AUTRES QUE LE GSH DANS UN MILIEU AQUEUX, REACTIFS ET NECESSAIRES POUR LEUR MISE EN OEUVRE