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.
根据本发明,通过在样品中所有巯基与一种与下列通式I相对应的试剂形成一种色团置换产物来测定
水样中的总巯基。 ##STR1## 还通过碱化从上述形成的置换产物中特异地形成一种色团
硫酮来测定还原型
谷胱甘肽(GSH)。巯基浓度与GSH不同,可通过在前面的测定中减去浓度来获得。应用于测定巯基和GSH,特别是在
生物介质中存在其他巯基的情况下。